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diff --git a/MatrixElement/DrellYanBase.cc b/MatrixElement/DrellYanBase.cc
--- a/MatrixElement/DrellYanBase.cc
+++ b/MatrixElement/DrellYanBase.cc
@@ -1,1056 +1,1057 @@
// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
// functions of the DrellYanBase class.
//
#include "DrellYanBase.h"
#include "ThePEG/Repository/EventGenerator.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Interface/Parameter.h"
#include "ThePEG/Interface/Reference.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
#include "ThePEG/PDT/EnumParticles.h"
#include "Herwig/Shower/QTilde/Base/ShowerTree.h"
#include "Herwig/Shower/QTilde/Base/HardTree.h"
#include "Herwig/Shower/QTilde/Base/ShowerProgenitor.h"
#include "Herwig/Shower/QTilde/Base/ShowerParticle.h"
#include "Herwig/Shower/QTilde/Base/Branching.h"
using namespace Herwig;
DrellYanBase::DrellYanBase()
: _channelwgtA(0.12), _channelwgtB(2.00), _nover(0), _maxwgt(0.),
_power(2.0),_preqqbar(6.5),_preqg(4.0),_pregqbar(4.0),
_min_pt(2.*GeV) {}
void DrellYanBase::persistentOutput(PersistentOStream & os) const {
os << _channelwgtA << _channelwgtB << _channelweights << _alpha
<< _power << _preqqbar << _preqg << _pregqbar << ounit( _min_pt, GeV )
<< _prefactor;
}
void DrellYanBase::persistentInput(PersistentIStream & is, int) {
is >> _channelwgtA >> _channelwgtB >> _channelweights >> _alpha
>> _power >> _preqqbar >> _preqg >> _pregqbar >> iunit( _min_pt, GeV )
>> _prefactor;
}
AbstractClassDescription<DrellYanBase> DrellYanBase::initDrellYanBase;
// Definition of the static class description member.
void DrellYanBase::Init() {
static ClassDocumentation<DrellYanBase> documentation
("The DrellYanBase class provides a base class for the"
" corrections to Drell-Yan type processes");
static Parameter<DrellYanBase,double> interfaceQQbarChannelWeight
("QQbarChannelWeight",
"The relative weights of the q qbar abd q g channels for selection."
" This is a technical parameter for the phase-space generation and "
"should not affect the results only the efficiency and fraction"
" of events with weight > 1.",
&DrellYanBase::_channelwgtA, 0.12, 0.01, 100.,
false, false, Interface::limited);
static Parameter<DrellYanBase,double> interfaceQGChannelWeight
("QGChannelWeight",
"The relative weights of the qg abd qbar g channels for selection."
" This is a technical parameter for the phase-space generation and "
"should not affect the results only the efficiency and fraction",
&DrellYanBase::_channelwgtB, 2., 0.01, 100.,
false, false, Interface::limited);
static Reference<DrellYanBase,ShowerAlpha> interfaceCoupling
("Coupling",
"Pointer to the object to calculate the coupling for the correction",
&DrellYanBase::_alpha, false, false, true, false, false);
static Parameter<DrellYanBase,double> interfacePower
("Power",
"The power for the sampling of the matrix elements",
&DrellYanBase::_power, 2.0, 1.0, 10.0,
false, false, Interface::limited);
static Parameter<DrellYanBase,double> interfacePrefactorqqbar
("Prefactorqqbar",
"The prefactor for the sampling of the q qbar channel",
&DrellYanBase::_preqqbar, 5.0, 0.0, 1000.0,
false, false, Interface::limited);
static Parameter<DrellYanBase,double> interfacePrefactorqg
("Prefactorqg",
"The prefactor for the sampling of the q g channel",
&DrellYanBase::_preqg, 3.0, 0.0, 1000.0,
false, false, Interface::limited);
static Parameter<DrellYanBase,double> interfacePrefactorgqbar
("Prefactorgqbar",
"The prefactor for the sampling of the g qbar channel",
&DrellYanBase::_pregqbar, 3.0, 0.0, 1000.0,
false, false, Interface::limited);
static Parameter<DrellYanBase, Energy> interfacePtMin
("minPt",
"The pt cut on hardest emision generation"
"2*(1-Beta)*exp(-sqr(intrinsicpT/RMS))/sqr(RMS)",
&DrellYanBase::_min_pt, GeV, 2.*GeV, ZERO, 100000.0*GeV,
false, false, Interface::limited);
}
void DrellYanBase::doinit() {
HwMEBase::doinit();
_channelweights.push_back(_channelwgtA/(1.+_channelwgtA));
_channelweights.push_back(_channelweights[0]+1./(1.+_channelwgtA)/(1+_channelwgtB));
_channelweights.push_back(1.0);
_prefactor.push_back(_preqqbar);
_prefactor.push_back(_preqg);
_prefactor.push_back(_pregqbar);
}
void DrellYanBase::dofinish() {
HwMEBase::dofinish();
if(_nover==0) return;
generator()->log() << "DrellYanBase when applying the hard correction "
<< _nover << " weights larger than one were generated of which"
<< " the largest was " << _maxwgt << "\n";
}
void DrellYanBase::applyHardMatrixElementCorrection(ShowerTreePtr tree) {
// get the quark,antiquark and the gauge boson
// get the quarks
map<ShowerProgenitorPtr,ShowerParticlePtr>::const_iterator cit;
ShowerParticleVector incoming;
vector<tcBeamPtr> beams;
for(cit=tree->incomingLines().begin();cit!=tree->incomingLines().end();++cit) {
incoming.push_back(cit->first->progenitor());
beams.push_back(cit->first->beam());
}
// ensure that the quark is first
if(incoming[0]->id()<incoming[1]->id()) {
swap(incoming[0],incoming[1]);
swap(beams[0],beams[1]);
}
Lorentz5Momentum pboson;
for( map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cjt= tree->outgoingLines().begin();
cjt != tree->outgoingLines().end();++cjt ) {
pboson += cjt->first->original()->momentum();
}
pboson.rescaleMass();
// calculate the momenta
unsigned int iemit,itype;
vector<Lorentz5Momentum> pnew;
LorentzRotation trans;
pair<double,double> xnew;
// if not accepted return
if(!applyHard(incoming,beams,pboson,iemit,itype,pnew,trans,xnew)) return;
// if applying ME correction create the new particles
if(itype==0) {
// get the momenta of the new particles
Lorentz5Momentum pquark(pnew[0]),panti(pnew[1]),pgluon(pnew[2]);
if(iemit==2) swap(pquark,panti);
// ensure gluon can be put on shell
Lorentz5Momentum ptest(pgluon);
if(ptest.boost(-(pquark+panti).boostVector()).e() <
getParticleData(ParticleID::g)->constituentMass()) return;
// create the new gluon
PPtr newg= getParticleData(ParticleID::g)->produceParticle(pgluon);
PPtr newq,newa;
ColinePtr col;
// make the new particles
if(iemit==1) {
col=incoming[0]->colourLine();
newq = getParticleData(incoming[0]->id())->produceParticle(pquark);
newa = new_ptr(Particle(*incoming[1]));
col->removeAntiColoured(newa);
newa->set5Momentum(panti);
}
else {
col=incoming[1]->antiColourLine();
newa = getParticleData(incoming[1]->id())->produceParticle(panti);
newq = new_ptr(Particle(*incoming[0]));
col->removeColoured(newq);
newq->set5Momentum(pquark);
}
// set the colour lines
ColinePtr newline=new_ptr(ColourLine());
if(iemit==1) {
newline->addColoured(newq);
newline->addColoured(newg);
col->addAntiColoured(newg);
col->addAntiColoured(newa);
}
else {
newline->addAntiColoured(newa);
newline->addAntiColoured(newg);
col->addColoured(newg);
col->addColoured(newq);
}
// change the existing quark and antiquark
PPtr orig;
for(cit=tree->incomingLines().begin();cit!=tree->incomingLines().end();++cit) {
if(cit->first->progenitor()->id()==newq->id()) {
// remove old particles from colour line
col->removeColoured(cit->first->copy());
col->removeColoured(cit->first->progenitor());
// insert new particles
cit->first->copy(newq);
ShowerParticlePtr sp(new_ptr(ShowerParticle(*newq,1,false)));
sp->x(xnew.first);
cit->first->progenitor(sp);
tree->incomingLines()[cit->first]=sp;
cit->first->perturbative(iemit!=1);
if(iemit==1) orig=cit->first->original();
}
else {
// remove old particles from colour line
col->removeAntiColoured(cit->first->copy());
col->removeColoured(cit->first->progenitor());
// insert new particles
cit->first->copy(newa);
ShowerParticlePtr sp(new_ptr(ShowerParticle(*newa,1,false)));
sp->x(xnew.second);
cit->first->progenitor(sp);
tree->incomingLines()[cit->first]=sp;
cit->first->perturbative(iemit==1);
if(iemit==2) orig=cit->first->original();
}
}
// fix the momentum of the gauge boson
Boost boostv=pboson.findBoostToCM();
trans *=LorentzRotation(boostv);
for( map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cjt= tree->outgoingLines().begin();
cjt != tree->outgoingLines().end();++cjt ) {
cjt->first->progenitor()->transform(trans);
cjt->first->copy()->transform(trans);
}
tree->hardMatrixElementCorrection(true);
// add the gluon
ShowerParticlePtr sg=new_ptr(ShowerParticle(*newg,1,true));
ShowerProgenitorPtr gluon=new_ptr(ShowerProgenitor(orig,newg,sg));
gluon->perturbative(false);
tree->outgoingLines().insert(make_pair(gluon,sg));
}
else if(itype==1) {
Lorentz5Momentum pin(pnew[0]),pout(pnew[1]),pgluon(pnew[2]);
if(iemit==2) swap(pin,pout);
// ensure outgoing quark can be put on-shell
Lorentz5Momentum ptest(pout);
if(ptest.boost(-(pin+pgluon).boostVector()).e() <
incoming[1]->dataPtr()->constituentMass()) return;
// create the new gluon
PPtr newg = getParticleData(ParticleID::g)->produceParticle(pgluon);
// create the new outgoing quark
PPtr newout= getParticleData(-incoming[1]->id())->produceParticle(pout);
// create the new incoming quark
PPtr newin = new_ptr(Particle(*incoming[0]));
newin->set5Momentum(pin);
// colour info
ColinePtr col=incoming[0]->colourLine();
col->removeColoured(newin);
ColinePtr newline=new_ptr(ColourLine());
newline->addColoured(newout);
newline->addColoured(newg);
col->addAntiColoured(newg);
col->addColoured(newin);
// change the existing incoming partons
PPtr orig;
for(cit=tree->incomingLines().begin();cit!=tree->incomingLines().end();++cit) {
if(cit->first->progenitor()->id()==newin->id()) {
// remove old particles from colour line
col->removeColoured(cit->first->copy());
col->removeColoured(cit->first->progenitor());
// insert new particles
cit->first->copy(newin);
ShowerParticlePtr sp(new_ptr(ShowerParticle(*newin,1,false)));
sp->x(xnew.first);
cit->first->progenitor(sp);
tree->incomingLines()[cit->first]=sp;
cit->first->perturbative(true);
}
else {
// remove old particles from colour line
col->removeAntiColoured(cit->first->copy());
col->removeColoured(cit->first->progenitor());
// insert new particles
cit->first->copy(newg);
ShowerParticlePtr sp(new_ptr(ShowerParticle(*newg,1,false)));
sp->x(xnew.second);
cit->first->progenitor(sp);
tree->incomingLines()[cit->first]=sp;
cit->first->perturbative(false);
orig=cit->first->original();
}
}
// fix the momentum of the gauge boson
Boost boostv=pboson.findBoostToCM();
trans *=LorentzRotation(boostv);
for( map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cjt= tree->outgoingLines().begin();
cjt != tree->outgoingLines().end();++cjt ) {
cjt->first->progenitor()->transform(trans);
cjt->first->copy()->transform(trans);
}
tree->hardMatrixElementCorrection(true);
// add the outgoing quark
ShowerParticlePtr sout=new_ptr(ShowerParticle(*newout,1,true));
ShowerProgenitorPtr out=new_ptr(ShowerProgenitor(orig,newout,sout));
out->perturbative(false);
tree->outgoingLines().insert(make_pair(out,sout));
}
else if(itype==2) {
Lorentz5Momentum pin(pnew[0]),pout(pnew[1]),pgluon(pnew[2]);
if(iemit==2) swap(pin,pout);
// ensure outgoing antiquark can be put on-shell
Lorentz5Momentum ptest(pout);
if(ptest.boost(-(pin+pgluon).boostVector()).e() <
incoming[0]->dataPtr()->constituentMass()) return;
// create the new gluon
PPtr newg = getParticleData(ParticleID::g)->produceParticle(pgluon);
// create the new outgoing antiquark
PPtr newout= getParticleData(-incoming[0]->id())->produceParticle(pout);
// create the new incoming antiquark
PPtr newin = new_ptr(Particle(*incoming[1]));
newin->set5Momentum(pin);
// colour info
ColinePtr col=incoming[0]->colourLine();
col->removeAntiColoured(newin);
ColinePtr newline=new_ptr(ColourLine());
newline->addAntiColoured(newout);
newline->addAntiColoured(newg);
col->addColoured(newg);
col->addAntiColoured(newin);
// change the existing incoming partons
PPtr orig;
for(cit=tree->incomingLines().begin();cit!=tree->incomingLines().end();++cit) {
if(cit->first->progenitor()->id()==newin->id()) {
// remove old particles from colour line
col->removeAntiColoured(cit->first->copy());
col->removeAntiColoured(cit->first->progenitor());
// insert new particles
cit->first->copy(newin);
ShowerParticlePtr sp(new_ptr(ShowerParticle(*newin,1,false)));
sp->x(xnew.second);
cit->first->progenitor(sp);
tree->incomingLines()[cit->first]=sp;
cit->first->perturbative(true);
}
else {
// remove old particles from colour line
col->removeColoured(cit->first->copy());
col->removeColoured(cit->first->progenitor());
// insert new particles
cit->first->copy(newg);
ShowerParticlePtr sp(new_ptr(ShowerParticle(*newg,1,false)));
sp->x(xnew.first);
cit->first->progenitor(sp);
tree->incomingLines()[cit->first]=sp;
cit->first->perturbative(false);
orig=cit->first->original();
}
}
// fix the momentum of the gauge boson
Boost boostv=pboson.findBoostToCM();
trans *=LorentzRotation(boostv);
for( map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cjt= tree->outgoingLines().begin();
cjt != tree->outgoingLines().end();++cjt ) {
cjt->first->progenitor()->transform(trans);
cjt->first->copy()->transform(trans);
}
tree->hardMatrixElementCorrection(true);
// add the outgoing antiquark
ShowerParticlePtr sout=new_ptr(ShowerParticle(*newout,1,true));
ShowerProgenitorPtr out=new_ptr(ShowerProgenitor(orig,newout,sout));
out->perturbative(false);
tree->outgoingLines().insert(make_pair(out,sout));
}
}
bool DrellYanBase::applyHard(ShowerParticleVector quarks,
vector<tcBeamPtr> beams, Lorentz5Momentum boson,
unsigned int & iemit,unsigned int & itype,
vector<Lorentz5Momentum> & pnew,
LorentzRotation & trans,
pair<double,double> & xout) {
// check that quark along +z and qbar along -z
bool quarkplus=quarks[0]->momentum().z()>quarks[1]->momentum().z();
// calculate the limits on s
Energy mb = sqrt(mb2_);
Energy2 smin=mb2_;
Energy2 s=
(generator()->currentEvent()->incoming().first ->momentum()+
generator()->currentEvent()->incoming().second->momentum()).m2();
Energy2 smax(s);
// calculate the rapidity of the boson
double yB=0.5*log((boson.e()+boson.z())/
(boson.e()-boson.z()));
if(!quarkplus) yB=-yB;
// if no phase-space return
if(smax<smin) return false;
// get the evolution scales (this needs improving)
double kappa[2]={1.,1.};
// get the momentum fractions for the leading order process
// and the values of the PDF's
double x[2]={-99.99e99,-99.99e99}, fx[2]={-99.99e99,-99.99e99};
tcPDFPtr pdf[2];
for(unsigned int ix=0;ix<quarks.size();++ix) {
x[ix]=quarks[ix]->x();
assert(beams[ix]);
pdf[ix]=beams[ix]->pdf();
assert(pdf[ix]);
fx[ix]=pdf[ix]->xfx(beams[ix],quarks[ix]->dataPtr(),mb2_,x[ix]);
}
// select the type of process and generate the kinematics
double rn(UseRandom::rnd());
Energy2 shat(ZERO),uhat(ZERO),that(ZERO);
double weight(0.),xnew[2]={1.,1.};
// generate the value of s according to 1/s^2
shat = smax*smin/(smin+UseRandom::rnd()*(smax-smin));
Energy2 jacobian = sqr(shat)*(1./smin-1./smax);
double sbar=shat/mb2_;
// calculate limits on that
Energy2 tmax=mb2_*kappa[0]*(1.-sbar)/(kappa[0]+sbar);
Energy2 tmin=shat*(1.-sbar)/(kappa[1]+sbar);
// calculate the limits on uhat
Energy2 umax(mb2_-shat-tmin),umin(mb2_-shat-tmax);
// check inside phase space
if(tmax<tmin||umax<umin) return false;
// q qbar -> g V
if(rn<_channelweights[0]) {
// generate t and u according to 1/t+1/u
// generate in 1/t
if(UseRandom::rndbool(0.5)) {
that=tmax*pow(tmin/tmax,UseRandom::rnd());
uhat=mb2_-shat-that;
jacobian *=log(tmin/tmax);
}
// generate in 1/u
else {
uhat=umax*pow(umin/umax,UseRandom::rnd());
that=mb2_-shat-uhat;
jacobian *=log(umin/umax);
}
Energy4 jacobian2 = jacobian * 2.*uhat*that/(shat-mb2_);
// new scale (this is mt^2=pt^2+mb^2)
Energy2 scale(uhat*that/shat+mb2_);
// the PDF's with the emitted gluon
double fxnew[2];
xnew[0]=exp(yB)/sqrt(s)*sqrt(shat*(mb2_-uhat)/(mb2_-that));
xnew[1]=shat/(s*xnew[0]);
for(unsigned int ix=0;ix<2;++ix)
{fxnew[ix]=pdf[ix]->xfx(beams[ix],quarks[ix]->dataPtr(),scale,xnew[ix]);}
// jacobian and me parts of the weight
weight=jacobian2*(sqr(mb2_-that)+sqr(mb2_-uhat))/(sqr(shat)*that*uhat);
// pdf part of the weight
weight *=fxnew[0]*fxnew[1]*x[0]*x[1]/(fx[0]*fx[1]*xnew[0]*xnew[1]);
// finally coupling, colour factor and different channel pieces
weight *= 2./3./Constants::pi/_channelweights[0]*_alpha->value(scale);
// select the emiting particle
iemit=1;
if(UseRandom::rnd()<sqr(mb2_-uhat)/(sqr(mb2_-uhat)+sqr(mb2_-that))) iemit=2;
itype=0;
}
// incoming gluon
else {
// generate t
if(rn>_channelweights[1]) {
swap(tmax,tmin);
tmax=mb2_-shat-tmax;
tmin=mb2_-shat-tmin;
}
that=tmax*pow(tmin/tmax,UseRandom::rnd());
uhat=mb2_-shat-that;
Energy4 jacobian2 = jacobian * that*log(tmax/tmin);
// new scale (this is mt^2=pt^2+mb^2)
Energy2 scale(uhat*that/shat+mb2_);
// g qbar -> qbar V
double fxnew[2];
if(rn<_channelweights[1]) {
itype=2;
xnew[0]=exp(yB)/sqrt(s)*sqrt(shat*(mb2_-uhat)/(mb2_-that));
xnew[1]=shat/(s*xnew[0]);
fxnew[0]=pdf[0]->xfx(beams[0],getParticleData(ParticleID::g),scale,xnew[0]);
fxnew[1]=pdf[1]->xfx(beams[1],quarks[1]->dataPtr(),scale,xnew[1]);
jacobian2/=(_channelweights[1]-_channelweights[0]);
}
// q g -> q V
else {
itype=1;
xnew[0]=exp(yB)/sqrt(s)*sqrt(shat*(mb2_-that)/(mb2_-uhat));
xnew[1]=shat/(s*xnew[0]);
fxnew[0]=pdf[0]->xfx(beams[0],quarks[0]->dataPtr(),scale,xnew[0]);
fxnew[1]=pdf[1]->xfx(beams[1],getParticleData(ParticleID::g),scale,xnew[1]);
jacobian2/=(_channelweights[2]-_channelweights[1]);
}
// jacobian and me parts of the weight
weight=-jacobian2*(sqr(mb2_-that)+sqr(mb2_-shat))/(sqr(shat)*shat*that);
// pdf part of the weight
weight *=fxnew[0]*fxnew[1]*x[0]*x[1]/(fx[0]*fx[1]*xnew[0]*xnew[1]);
// finally coupling, colour factor and different channel pieces
weight *= 0.25/Constants::pi*_alpha->value(scale);
// select the emiting particle
iemit=1;
if(UseRandom::rnd()<sqr(mb2_-that)/(sqr(mb2_-that)+sqr(mb2_-shat))) iemit=2;
}
// if me correction should be applied
if(weight>1.) {
++_nover;
_maxwgt=max(_maxwgt,weight);
weight=1.;
}
if(UseRandom::rnd()>weight) return false;
// construct the momenta in the rest frame of the boson
Lorentz5Momentum pb(ZERO,ZERO,ZERO,mb,mb),pspect,pg,pemit;
double cos3 = 0.0;
if(itype==0)
{
pg = Lorentz5Momentum(ZERO,ZERO,ZERO,0.5*(shat-mb2_)/mb,ZERO);
Energy2 tp(that),up(uhat);
double zsign(-1.);
if(iemit==2)
{
tp=uhat;
up=that;
zsign=1.;
}
pspect = Lorentz5Momentum(ZERO,ZERO,zsign*0.5*(mb2_-tp)/mb,
0.5*(mb2_-tp)/mb,ZERO);
Energy eemit=0.5*(mb2_-up)/mb;
cos3 = 0.5/pspect.z()/pg.e()*(sqr(pspect.e())+sqr(pg.e())-sqr(eemit));
}
else
{
pg=Lorentz5Momentum(ZERO,ZERO,ZERO,0.5*(mb2_-uhat)/mb,ZERO);
double zsign(1.);
if(iemit==1)
{
if(itype==1) zsign=-1.;
pspect=Lorentz5Momentum(ZERO,ZERO,0.5*zsign*(shat-mb2_)/mb,
0.5*(shat-mb2_)/mb);
Energy eemit=0.5*(mb2_-that)/mb;
cos3 = 0.5/pspect.z()/pg.e()*(sqr(pspect.e())+sqr(pg.e())-sqr(eemit));
}
else
{
if(itype==2) zsign=-1.;
pspect=Lorentz5Momentum(ZERO,ZERO,0.5*zsign*(mb2_-that)/mb,
0.5*(mb2_-that)/mb);
Energy eemit=0.5*(shat-mb2_)/mb;
cos3 = 0.5/pspect.z()/pg.e()*(-sqr(pspect.e())-sqr(pg.e())+sqr(eemit));
}
}
// rotate the gluon
double sin3(sqrt(1.-sqr(cos3)));
double phi(Constants::twopi*UseRandom::rnd());
pg.setX(pg.e()*sin3*cos(phi));
pg.setY(pg.e()*sin3*sin(phi));
pg.setZ(pg.e()*cos3);
if(itype==0) {
pemit=pb+pg-pspect;
}
else {
if(iemit==1) pemit=pb+pspect-pg;
else pemit=pspect+pg-pb;
}
pemit.rescaleMass();
// find the new CMF
Lorentz5Momentum pp[2];
if(itype==0) {
if(iemit==1) {
pp[0]=pemit;
pp[1]=pspect;
}
else {
pp[0]=pspect;
pp[1]=pemit;
}
}
else if(itype==1) {
pp[1]=pg;
if(iemit==1) pp[0]=pemit;
else pp[0]=pspect;
}
else {
pp[0]=pg;
if(iemit==1) pp[1]=pemit;
else pp[1]=pspect;
}
Lorentz5Momentum pz= quarkplus ? pp[0] : pp[1];
pp[0]/=xnew[0];
pp[1]/=xnew[1];
Lorentz5Momentum plab(pp[0]+pp[1]);
plab.rescaleMass();
// construct the boost to rest frame of plab
trans=LorentzRotation(plab.findBoostToCM());
pz.transform(trans);
// rotate so emitting particle along z axis
// rotate so in x-z plane
trans.rotateZ(-atan2(pz.y(),pz.x()));
// rotate so along
trans.rotateY(-acos(pz.z()/pz.vect().mag()));
// undo azimuthal rotation
trans.rotateZ(atan2(pz.y(),pz.x()));
// perform the transforms
pb .transform(trans);
pspect.transform(trans);
pg .transform(trans);
pemit .transform(trans);
// momenta to be returned
pnew.push_back(pemit);
pnew.push_back(pspect);
pnew.push_back(pg);
pnew.push_back(pb);
xout.first=xnew[0];
xout.second=xnew[1];
return true;
}
bool DrellYanBase::softMatrixElementVeto(ShowerProgenitorPtr initial,
ShowerParticlePtr parent,Branching br) {
if(parent->isFinalState()) return false;
// check if me correction should be applied
long id[2]={initial->id(),parent->id()};
if(id[0]!=id[1]||id[1]==ParticleID::g) return false;
// get the pT
Energy pT=br.kinematics->pT();
// check if hardest so far
if(pT<initial->highestpT()) return false;
// compute the invariants
double kappa(sqr(br.kinematics->scale())/mb2_),z(br.kinematics->z());
Energy2 shat(mb2_/z*(1.+(1.-z)*kappa)),that(-(1.-z)*kappa*mb2_),uhat(-(1.-z)*shat);
// check which type of process
// g qbar
double wgt(1.);
if(id[0]>0&&br.ids[0]->id()==ParticleID::g)
wgt=mb2_/(shat+uhat)*(sqr(mb2_-that)+sqr(mb2_-shat))/(sqr(shat+uhat)+sqr(uhat));
else if(id[0]>0&&br.ids[0]->id()==id[0])
wgt=mb2_/(shat+uhat)*(sqr(mb2_-uhat)+sqr(mb2_-that))/(sqr(shat)+sqr(shat+uhat));
else if(id[0]<0&&br.ids[0]->id()==ParticleID::g)
wgt=mb2_/(shat+uhat)*(sqr(mb2_-that)+sqr(mb2_-shat))/(sqr(shat+uhat)+sqr(uhat));
- else if(id[0]<0&&br.ids[0]->id()==-id[0])
+ else if(id[0]<0&&br.ids[0]->id()==id[0])
wgt=mb2_/(shat+uhat)*(sqr(mb2_-uhat)+sqr(mb2_-that))/(sqr(shat)+sqr(shat+uhat));
- else return false;
+ else
+ return false;
if(wgt<.0||wgt>1.) generator()->log() << "Soft ME correction weight too large or "
<< "negative in DrellYanBase::"
<< "softMatrixElementVeto()soft weight "
<< " sbar = " << shat/mb2_
<< " tbar = " << that/mb2_
<< "weight = " << wgt << "\n";
// if not vetoed
if(UseRandom::rndbool(wgt)) return false;
// otherwise
parent->vetoEmission(br.type,br.kinematics->scale());
return true;
}
HardTreePtr DrellYanBase::generateHardest(ShowerTreePtr tree,ShowerInteraction::Type inter) {
if(inter==ShowerInteraction::QED) return HardTreePtr();
useMe();
// get the particles to be showered
_beams.clear();
_partons.clear();
// find the incoming particles
ShowerParticleVector incoming;
map<ShowerProgenitorPtr,ShowerParticlePtr>::const_iterator cit;
_quarkplus = true;
vector<ShowerProgenitorPtr> particlesToShower;
//progenitor particles are produced in z direction.
for( cit = tree->incomingLines().begin(); cit != tree->incomingLines().end(); ++cit ) {
incoming.push_back( cit->first->progenitor() );
_beams.push_back( cit->first->beam() );
_partons.push_back( cit->first->progenitor()->dataPtr() );
// check that quark is along +ve z direction
if(cit->first->progenitor()->id() > 0 &&
cit->first->progenitor()->momentum().z() < ZERO )
_quarkplus = false;
particlesToShower.push_back( cit->first );
}
Lorentz5Momentum pboson;
for( map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cjt= tree->outgoingLines().begin();
cjt != tree->outgoingLines().end();++cjt ) {
pboson += cjt->first->original()->momentum();
}
pboson.rescaleMass();
// calculate the rapidity of the boson
_yb = 0.5 * log((pboson.e()+pboson.z())/(pboson.e()-pboson.z()));
_yb *= _quarkplus ? 1. : -1.;
_mass = pboson.mass();
// we are assuming quark first, swap order to ensure this
// if antiquark first
if(_partons[0]->id()<_partons[1]->id()) {
swap(_partons[0],_partons[1]);
swap(_beams[0],_beams[1]);
}
vector<Lorentz5Momentum> pnew;
int emission_type(-1);
// generate the hard emission and return if no emission
if(!getEvent(pnew,emission_type)) {
for(unsigned int ix=0;ix<particlesToShower.size();++ix)
particlesToShower[ix]->maximumpT(_min_pt,ShowerInteraction::QCD);
return HardTreePtr();
}
// construct the HardTree object needed to perform the showers
ShowerParticleVector newparticles;
// make the particles for the HardTree
tcPDPtr gluon=getParticleData(ParticleID::g);
// create the partons
int iemit;
// q qbar -> g V
ColinePtr newline[2]={new_ptr(ColourLine()),new_ptr(ColourLine())};
if(emission_type==0) {
newparticles.push_back(new_ptr(ShowerParticle(_partons[0] ,false)));
newparticles.push_back(new_ptr(ShowerParticle(_partons[1] ,false)));
newparticles.push_back(new_ptr(ShowerParticle(gluon , true)));
newline[1]->addColoured(newparticles[0]);
newline[1]->addColoured(newparticles[2]);
newline[0]->addAntiColoured(newparticles[1]);
newline[0]->addAntiColoured(newparticles[2]);
iemit = (pnew[0]-pnew[2]).m2()>(pnew[1]-pnew[2]).m2() ? 0 : 1;
}
// q g -> q V
else if(emission_type==1) {
iemit=1;
newparticles.push_back(new_ptr(ShowerParticle(_partons[0] ,false)));
newparticles.push_back(new_ptr(ShowerParticle(gluon ,false)));
newparticles.push_back(new_ptr(ShowerParticle(_partons[1]->CC(), true)));
newline[1]->addColoured(newparticles[0]);
newline[1]->addAntiColoured(newparticles[1]);
newline[0]->addColoured(newparticles[1]);
newline[0]->addColoured(newparticles[2]);
}
// g qbar -> qbar V
else {
iemit=0;
newparticles.push_back(new_ptr(ShowerParticle(gluon ,false)));
newparticles.push_back(new_ptr(ShowerParticle(_partons[1] ,false)));
newparticles.push_back(new_ptr(ShowerParticle(_partons[0]->CC(), true)));
newline[0]->addAntiColoured(newparticles[1]);
newline[0]->addColoured(newparticles[0]);
newline[1]->addAntiColoured(newparticles[0]);
newline[1]->addAntiColoured(newparticles[2]);
}
// set the momenta
for(unsigned int ix=0;ix<3;++ix) newparticles[ix]->set5Momentum(pnew[ix]);
// create the off-shell particle
Lorentz5Momentum poff=pnew[iemit]-pnew[2];
poff.rescaleMass();
newparticles.push_back(new_ptr(ShowerParticle(_partons[iemit],false)));
newparticles.back()->set5Momentum(poff);
if(iemit==0) {
newline[0]->addColoured(newparticles.back());
}
else {
newline[1]->addAntiColoured(newparticles.back());
}
// compute the boost for the bosons
LorentzRotation boost(pboson.findBoostToCM());
boost.boost(pnew[3].boostVector());
for( map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cjt= tree->outgoingLines().begin();
cjt != tree->outgoingLines().end();++cjt ) {
newparticles.push_back(new_ptr(ShowerParticle(cjt->first->original()->dataPtr(),
true)));
newparticles.back()->set5Momentum(boost*cjt->first->original()->momentum());
}
vector<HardBranchingPtr> inBranch,hardBranch;
// create the branchings for the incoming particles
inBranch.push_back(new_ptr(HardBranching(newparticles[0],SudakovPtr(),
HardBranchingPtr(),HardBranching::Incoming)));
inBranch.push_back(new_ptr(HardBranching(newparticles[1],SudakovPtr(),
HardBranchingPtr(),HardBranching::Incoming)));
// intermediate IS particle
hardBranch.push_back(new_ptr(HardBranching(newparticles[3],SudakovPtr(),
inBranch[iemit],HardBranching::Incoming)));
inBranch[iemit]->addChild(hardBranch.back());
inBranch[iemit]->type(hardBranch.back()->branchingParticle()->id()>0 ?
ShowerPartnerType::QCDColourLine : ShowerPartnerType::QCDAntiColourLine);
// create the branching for the emitted jet
inBranch[iemit]->addChild(new_ptr(HardBranching(newparticles[2],SudakovPtr(),
inBranch[iemit],HardBranching::Outgoing)));
// set the colour partners
hardBranch.back()->colourPartner(inBranch[iemit==0 ? 1 : 0]);
inBranch[iemit==0 ? 1 : 0]->colourPartner(hardBranch.back());
// add other particle
hardBranch.push_back(inBranch[iemit==0 ? 1 : 0]);
// outgoing particles
for(unsigned int ix=4;ix<newparticles.size();++ix) {
hardBranch.push_back(new_ptr(HardBranching(newparticles[ix],SudakovPtr(),
HardBranchingPtr(),HardBranching::Outgoing)));
}
// make the tree
HardTreePtr hardtree=new_ptr(HardTree(hardBranch,inBranch,ShowerInteraction::QCD));
// connect the ShowerParticles with the branchings
// and set the maximum pt for the radiation
set<HardBranchingPtr> hard=hardtree->branchings();
for(unsigned int ix=0;ix<particlesToShower.size();++ix) {
if( _pt < _min_pt ) particlesToShower[ix]->maximumpT(_min_pt,ShowerInteraction::QCD);
else particlesToShower[ix]->maximumpT(_pt,ShowerInteraction::QCD);
for(set<HardBranchingPtr>::const_iterator mit=hard.begin();
mit!=hard.end();++mit) {
if(particlesToShower[ix]->progenitor()->id()==(*mit)->branchingParticle()->id()&&
(( particlesToShower[ix]->progenitor()->isFinalState()&&
(**mit).status()==HardBranching::Outgoing)||
(!particlesToShower[ix]->progenitor()->isFinalState()&&
(**mit).status()==HardBranching::Incoming))) {
hardtree->connect(particlesToShower[ix]->progenitor(),*mit);
if((**mit).status()==HardBranching::Incoming) {
(*mit)->beam(particlesToShower[ix]->original()->parents()[0]);
}
HardBranchingPtr parent=(*mit)->parent();
while(parent) {
parent->beam(particlesToShower[ix]->original()->parents()[0]);
parent=parent->parent();
};
}
}
}
// return the tree
return hardtree;
}
double DrellYanBase::getResult(int emis_type, Energy pt, double yj) {
Energy2 s=sqr(generator()->maximumCMEnergy());
Energy2 m2(sqr(_mass));
Energy2 scale = m2+sqr(pt);
Energy et=sqrt(scale);
// longitudinal real correction fractions
double x = pt*exp( yj)/sqrt(s)+et*exp( _yb)/sqrt(s);
double y = pt*exp(-yj)/sqrt(s)+et*exp(-_yb)/sqrt(s);
// reject if outside region
if(x<0.||x>1.||y<0.||y>1.||x*y<m2/s) return 0.;
// longitudinal born fractions
double x1 = _mass*exp( _yb)/sqrt(s);
double y1 = _mass*exp(-_yb)/sqrt(s);
// mandelstam variables
Energy2 th = -sqrt(s)*x*pt*exp(-yj);
Energy2 uh = -sqrt(s)*y*pt*exp( yj);
Energy2 sh = m2-th-uh;
double res;
// pdf part of the cross section
double pdf[4];
pdf[0]=_beams[0]->pdf()->xfx(_beams[0],_partons[0],m2,x1);
pdf[1]=_beams[1]->pdf()->xfx(_beams[1],_partons[1],m2,y1);
//qqbar2Zg
using Constants::pi;
if(emis_type==0) {
pdf[2]=_beams[0]->pdf()->xfx(_beams[0],_partons[0],scale,x);
pdf[3]=_beams[1]->pdf()->xfx(_beams[1],_partons[1],scale,y);
res = 4./3./pi*(sqr(th-m2)+sqr(uh-m2))*pt/(sh*uh*th)*GeV;
}
//qg2Zq
else if(emis_type==1) {
pdf[2]=_beams[0]->pdf()->xfx(_beams[0],_partons[0],scale,x);
pdf[3]=_beams[1]->pdf()->xfx(_beams[1],getParticleData(ParticleID::g),scale,y);
res = -1./2./pi*(sqr(uh-m2)+sqr(sh-m2))*pt/(sh*sh*uh)*GeV;
}
//qbarg2Zqbar
else {
pdf[2]=_beams[0]->pdf()->xfx(_beams[0],getParticleData(ParticleID::g),scale,x);
pdf[3]=_beams[1]->pdf()->xfx(_beams[1],_partons[1],scale,y);
res =- 1./2./pi*(sqr(th-m2)+sqr(sh-m2))*pt/(sh*sh*th)*GeV;
}
//deals with pdf zero issue at large x
if(pdf[0]<=0.||pdf[1]<=0.||pdf[2]<=0.||pdf[3]<=0.) {
res=0.;
}
else {
res*=pdf[2]*pdf[3]/pdf[0]/pdf[1]*m2/sh;
}
res*=_alpha->ratio(sqr(pt));
return res;
}
bool DrellYanBase::getEvent(vector<Lorentz5Momentum> & pnew,
int & emis_type){
// pt cut-off
// Energy minp = 0.1*GeV;
// maximum pt (half of centre-of-mass energy)
Energy maxp = 0.5*generator()->maximumCMEnergy();
// set pt of emission to zero
_pt=ZERO;
//Working Variables
Energy pt;
double yj;
// limits on the rapidity of the jet
double minyj = -8.0,maxyj = 8.0;
bool reject;
double wgt;
emis_type=-1;
for(int j=0;j<3;j++) {
pt=maxp;
double a = _alpha->overestimateValue()*_prefactor[j]*(maxyj-minyj)/(_power-1.);
do {
// generate next pt
pt=GeV/pow(pow(GeV/pt,_power-1)-log(UseRandom::rnd())/a,1./(_power-1.));
// generate rapidity of the jet
yj=UseRandom::rnd()*(maxyj-minyj)+ minyj;
// calculate rejection weight
wgt=getResult(j,pt,yj);
wgt/= _prefactor[j]*pow(GeV/pt,_power);
reject = UseRandom::rnd()>wgt;
//no emission event if p goes past p min - basically set to outside
//of the histogram bounds (hopefully hist object just ignores it)
if(pt<_min_pt){
pt=ZERO;
reject = false;
}
if(wgt>1.0) {
ostringstream s;
s << "DrellYanBase::getEvent weight for channel " << j
<< "is " << wgt << " which is greater than 1";
generator()->logWarning( Exception(s.str(), Exception::warning) );
}
}
while(reject);
// set pt of emission etc
if(pt>_pt){
emis_type = j;
_pt=pt;
_yj=yj;
}
}
//was this an (overall) no emission event?
if(_pt<_min_pt){
_pt=ZERO;
emis_type = 3;
}
if(emis_type==3) return false;
// generate the momenta of the particles
// hadron-hadron cmf
Energy2 s=sqr(generator()->maximumCMEnergy());
// transverse energy
Energy2 m2(sqr(_mass));
Energy et=sqrt(m2+sqr(_pt));
// first calculate all the kinematic variables
// longitudinal real correction fractions
double x = _pt*exp( _yj)/sqrt(s)+et*exp( _yb)/sqrt(s);
double y = _pt*exp(-_yj)/sqrt(s)+et*exp(-_yb)/sqrt(s);
// that and uhat
Energy2 th = -sqrt(s)*x*_pt*exp(-_yj);
Energy2 uh = -sqrt(s)*y*_pt*exp( _yj);
Energy2 sh = x*y*s;
if(emis_type==1) swap(th,uh);
// decide which was the emitting particle
unsigned int iemit=1;
// from q qbar
if(emis_type==0) {
if(UseRandom::rnd()<sqr(m2-uh)/(sqr(m2-uh)+sqr(m2-th))) iemit=2;
}
else {
if(UseRandom::rnd()<sqr(m2-th)/(sqr(m2-th)+sqr(m2-sh))) iemit=2;
}
// reconstruct the momenta in the rest frame of the gauge boson
Lorentz5Momentum pb(ZERO,ZERO,ZERO,_mass,_mass),pspect,pg,pemit;
double cos3;
if(emis_type==0) {
pg=Lorentz5Momentum(ZERO,ZERO,ZERO,0.5*(sh-m2)/_mass,ZERO);
Energy2 tp(th),up(uh);
double zsign(-1.);
if(iemit==2) {
swap(tp,up);
zsign=1;
}
pspect = Lorentz5Momentum(ZERO,ZERO
,zsign*0.5*(m2-tp)/_mass,0.5*(m2-tp)/_mass,
ZERO);
Energy eemit=0.5*(m2-up)/_mass;
cos3 = 0.5/pspect.z()/pg.e()*(sqr(pspect.e())+sqr(pg.e())-sqr(eemit));
}
else {
pg=Lorentz5Momentum(ZERO,ZERO,ZERO,0.5*(m2-uh)/_mass,ZERO);
double zsign(1.);
if(iemit==1) {
if(emis_type==1) zsign=-1.;
pspect=Lorentz5Momentum(ZERO,ZERO,0.5*zsign*(sh-m2)/_mass,0.5*(sh-m2)/_mass);
Energy eemit=0.5*(m2-th)/_mass;
cos3 = 0.5/pspect.z()/pg.e()*(sqr(pspect.e())+sqr(pg.e())-sqr(eemit));
}
else {
if(emis_type==2) zsign=-1.;
pspect=Lorentz5Momentum(ZERO,ZERO,0.5*zsign*(m2-th)/_mass,0.5*(m2-th)/_mass);
Energy eemit=0.5*(sh-m2)/_mass;
cos3 = 0.5/pspect.z()/pg.e()*(-sqr(pspect.e())-sqr(pg.e())+sqr(eemit));
}
}
// rotate the gluon
double sin3(sqrt(1.-sqr(cos3))),phi(Constants::twopi*UseRandom::rnd());
pg.setX(pg.e()*sin3*cos(phi));
pg.setY(pg.e()*sin3*sin(phi));
pg.setZ(pg.e()*cos3);
if(emis_type==0) {
pemit=pb+pg-pspect;
}
else {
if(iemit==1) pemit=pb+pspect-pg;
else pemit=pspect+pg-pb;
}
pemit .setMass(ZERO);
pg .setMass(ZERO);
pspect.setMass(ZERO);
// find the new CMF
Lorentz5Momentum pp[2];
if(emis_type==0) {
pp[0]=pemit;
pp[1]=pspect;
if(iemit==2) swap(pp[0],pp[1]);
}
else if(emis_type==1) {
pp[1]=pg;
if(iemit==1) pp[0]=pemit;
else pp[0]=pspect;
}
else {
pp[0]=pg;
if(iemit==1) pp[1]=pemit;
else pp[1]=pspect;
}
Lorentz5Momentum pz= _quarkplus ? pp[0] : pp[1];
pp[0]/=x;
pp[1]/=y;
Lorentz5Momentum plab(pp[0]+pp[1]);
plab.rescaleMass();
// construct the boost to rest frame of plab
LorentzRotation trans=LorentzRotation(plab.findBoostToCM());
pz.transform(trans);
// rotate so emitting particle along z axis
// rotate so in x-z plane
trans.rotateZ(-atan2(pz.y(),pz.x()));
// rotate so along
trans.rotateY(-acos(pz.z()/pz.vect().mag()));
// undo azimuthal rotation
trans.rotateZ(atan2(pz.y(),pz.x()));
// perform the transforms
pb .transform(trans);
pspect.transform(trans);
pg .transform(trans);
pemit .transform(trans);
// copy the momenta for the new particles
pnew.resize(4);
if(emis_type==0) {
pnew[0]=pemit;
pnew[1]=pspect;
if(iemit==2) swap(pnew[0],pnew[1]);
pnew[2]=pg;
}
else if(emis_type==1) {
pnew[0]=pemit;
pnew[2]=pspect;
if(iemit==2) swap(pnew[0],pnew[2]);
pnew[1]=pg;
}
else if(emis_type==2) {
pnew[1]=pspect;
pnew[2]=pemit;
if(iemit==1) swap(pnew[1],pnew[2]);
pnew[0]=pg;
}
pnew[3]=pb;
return true;
}
diff --git a/Shower/QTilde/Base/PartnerFinder.cc b/Shower/QTilde/Base/PartnerFinder.cc
--- a/Shower/QTilde/Base/PartnerFinder.cc
+++ b/Shower/QTilde/Base/PartnerFinder.cc
@@ -1,536 +1,535 @@
// -*- C++ -*-
//
// PartnerFinder.cc is a part of Herwig - A multi-purpose Monte Carlo event generator
// Copyright (C) 2002-2011 The Herwig Collaboration
//
// Herwig is licenced under version 2 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
//
// This is the implementation of the non-inlined, non-templated member
// functions of the PartnerFinder class.
//
#include "PartnerFinder.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Interface/Parameter.h"
#include "ThePEG/Repository/EventGenerator.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
#include "ShowerParticle.h"
#include "ThePEG/Repository/UseRandom.h"
#include "ThePEG/Interface/Switch.h"
#include "ThePEG/Utilities/Debug.h"
#include "ThePEG/Utilities/DescribeClass.h"
using namespace Herwig;
DescribeAbstractClass<PartnerFinder,Interfaced>
describePartnerFinder ("Herwig::PartnerFinder","HwShower.so");
// some useful functions to avoid using #define
namespace {
// return bool if final-state particle
inline bool FS(const tShowerParticlePtr a) {
return a->isFinalState();
}
// return colour line pointer
inline Ptr<ThePEG::ColourLine>::transient_pointer
CL(const tShowerParticlePtr a, unsigned int index=0) {
return a->colourInfo()->colourLines().empty() ? ThePEG::tColinePtr() :
const_ptr_cast<ThePEG::tColinePtr>(a->colourInfo()->colourLines()[index]);
}
// return colour line size
inline unsigned int
CLSIZE(const tShowerParticlePtr a) {
return a->colourInfo()->colourLines().size();
}
inline Ptr<ThePEG::ColourLine>::transient_pointer
ACL(const tShowerParticlePtr a, unsigned int index=0) {
return a->colourInfo()->antiColourLines().empty() ? ThePEG::tColinePtr() :
const_ptr_cast<ThePEG::tColinePtr>(a->colourInfo()->antiColourLines()[index]);
}
inline unsigned int
ACLSIZE(const tShowerParticlePtr a) {
return a->colourInfo()->antiColourLines().size();
}
}
void PartnerFinder::persistentOutput(PersistentOStream & os) const {
os << partnerMethod_ << QEDPartner_ << scaleChoice_;
}
void PartnerFinder::persistentInput(PersistentIStream & is, int) {
is >> partnerMethod_ >> QEDPartner_ >> scaleChoice_;
}
void PartnerFinder::Init() {
static ClassDocumentation<PartnerFinder> documentation
("This class is responsible for finding the partners for each interaction types ",
"and within the evolution scale range specified by the ShowerVariables ",
"then to determine the initial evolution scales for each pair of partners.");
static Switch<PartnerFinder,int> interfacePartnerMethod
("PartnerMethod",
"Choice of partner finding method for gluon evolution.",
&PartnerFinder::partnerMethod_, 0, false, false);
static SwitchOption interfacePartnerMethodRandom
(interfacePartnerMethod,
"Random",
"Choose partners of a gluon randomly.",
0);
static SwitchOption interfacePartnerMethodMaximum
(interfacePartnerMethod,
"Maximum",
"Choose partner of gluon with largest angle.",
1);
static Switch<PartnerFinder,int> interfaceQEDPartner
("QEDPartner",
"Control of which particles to use as the partner for QED radiation",
&PartnerFinder::QEDPartner_, 0, false, false);
static SwitchOption interfaceQEDPartnerAll
(interfaceQEDPartner,
"All",
"Consider all possible choices which give a positive contribution"
" in the soft limit.",
0);
static SwitchOption interfaceQEDPartnerIIandFF
(interfaceQEDPartner,
"IIandFF",
"Only allow initial-initial or final-final combinations",
1);
static SwitchOption interfaceQEDPartnerIF
(interfaceQEDPartner,
"IF",
"Only allow initial-final combinations",
2);
static Switch<PartnerFinder,int> interfaceScaleChoice
("ScaleChoice",
"The choice of the evolution scales",
&PartnerFinder::scaleChoice_, 0, false, false);
static SwitchOption interfaceScaleChoicePartner
(interfaceScaleChoice,
"Partner",
"Scale of all interactions is that of the evolution partner",
0);
static SwitchOption interfaceScaleChoiceDifferent
(interfaceScaleChoice,
"Different",
"Allow each interaction to have different scales",
1);
}
void PartnerFinder::setInitialEvolutionScales(const ShowerParticleVector &particles,
const bool isDecayCase,
ShowerInteraction::Type type,
const bool setPartners) {
// clear the existing partners
for(ShowerParticleVector::const_iterator cit = particles.begin();
cit != particles.end(); ++cit) (*cit)->clearPartners();
// set them
if(type==ShowerInteraction::QCD) {
setInitialQCDEvolutionScales(particles,isDecayCase,setPartners);
}
else if(type==ShowerInteraction::QED) {
setInitialQEDEvolutionScales(particles,isDecayCase,setPartners);
}
else {
setInitialQCDEvolutionScales(particles,isDecayCase,setPartners);
setInitialQEDEvolutionScales(particles,isDecayCase,false);
}
// print out for debugging
if(Debug::level>=10) {
for(ShowerParticleVector::const_iterator cit = particles.begin();
cit != particles.end(); ++cit) {
generator()->log() << "Particle: " << **cit << "\n";
if(!(**cit).partner()) continue;
generator()->log() << "Primary partner: " << *(**cit).partner() << "\n";
for(vector<ShowerParticle::EvolutionPartner>::const_iterator it= (**cit).partners().begin();
it!=(**cit).partners().end();++it) {
generator()->log() << it->type << " " << it->weight << " "
<< it->scale/GeV << " "
<< *(it->partner)
<< "\n";
}
}
generator()->log() << flush;
}
}
void PartnerFinder::setInitialQCDEvolutionScales(const ShowerParticleVector &particles,
const bool isDecayCase,
const bool setPartners) {
// set the partners and the scales
if(setPartners) {
// Loop over particles and consider only coloured particles which don't
// have already their colour partner fixed and that don't have children
// (the latter requirement is relaxed in the case isDecayCase is true).
// Build a map which has as key one of these particles (i.e. a pointer
// to a ShowerParticle object) and as a corresponding value the vector
// of all its possible *normal* candidate colour partners, defined as follows:
// --- have colour, and no children (this is not required in the case
// isDecayCase is true);
// --- if both are initial (incoming) state particles, then the (non-null) colourLine()
// of one of them must match the (non-null) antiColourLine() of the other.
// --- if one is an initial (incoming) state particle and the other is
// a final (outgoing) state particle, then both must have the
// same (non-null) colourLine() or the same (non-null) antiColourLine();
// Notice that this definition exclude the special case of baryon-violating
// processes (as in R-parity Susy), which will show up as particles
// without candidate colour partners, and that we will be treated a part later
// (this means that no modifications of the following loop is needed!)
ShowerParticleVector::const_iterator cit, cjt;
for(cit = particles.begin(); cit != particles.end(); ++cit) {
// Skip colourless particles
if(!(*cit)->data().coloured()) continue;
// find the partners
vector< pair<ShowerPartnerType::Type, tShowerParticlePtr> > partners =
findQCDPartners(*cit,particles);
// must have a partner
if(partners.empty()) {
throw Exception() << "`Failed to make colour connections in "
<< "PartnerFinder::setQCDInitialEvolutionScales"
<< (**cit)
<< Exception::eventerror;
}
// Calculate the evolution scales for all possible pairs of of particles
vector<pair<Energy,Energy> > scales;
for(unsigned int ix=0;ix< partners.size();++ix) {
scales.push_back(calculateInitialEvolutionScales(ShowerPPair(*cit,partners[ix].second),
isDecayCase));
}
// In the case of more than one candidate colour partners,
// there are now two approaches to choosing the partner. The
// first method is based on two assumptions:
// 1) the choice of which is the colour partner is done
// *randomly* between the available candidates.
// 2) the choice of which is the colour partner is done
// *independently* from each particle: in other words,
// if for a particle "i" its selected colour partner is
// the particle "j", then the colour partner of "j"
// does not have to be necessarily "i".
// The second method always chooses the furthest partner
// for hard gluons and gluinos.
// store the choice
int position(-1);
// random choice
if( partnerMethod_ == 0 ) {
// random choice of partner
position = UseRandom::irnd(partners.size());
}
// take the one with largest angle
else if (partnerMethod_ == 1 ) {
if ((*cit)->perturbative() == 1 &&
(*cit)->dataPtr()->iColour()==PDT::Colour8 ) {
assert(partners.size()==2);
// Determine largest angle
double maxAngle(0.);
for(unsigned int ix=0;ix<partners.size();++ix) {
double angle = (*cit)->momentum().vect().
angle(partners[ix].second->momentum().vect());
if(angle>maxAngle) {
maxAngle = angle;
position = ix;
}
}
}
else
position = UseRandom::irnd(partners.size());
}
else
assert(false);
// set the evolution partner
(*cit)->partner(partners[position].second);
for(unsigned int ix=0;ix<partners.size();++ix) {
(**cit).addPartner(ShowerParticle::EvolutionPartner(partners[ix].second,
1.,partners[ix].first,
scales[ix].first));
}
// set scales for all interactions to that of the partner, default
Energy scale = scales[position].first;
for(unsigned int ix=0;ix<partners.size();++ix) {
if(partners[ix].first==ShowerPartnerType::QCDColourLine) {
(**cit).scales().QCD_c =
(**cit).scales().QCD_c_noAO =
(scaleChoice_==0 ? scale : scales[ix].first);
}
else if(partners[ix].first==ShowerPartnerType::QCDAntiColourLine) {
(**cit).scales().QCD_ac =
(**cit).scales().QCD_ac_noAO =
(scaleChoice_==0 ? scale : scales[ix].first);
}
else
assert(false);
}
}
}
// primary partner set, set the others and do the scale
else {
for(ShowerParticleVector::const_iterator cit = particles.begin();
cit != particles.end(); ++cit) {
// Skip colourless particles
if(!(*cit)->data().coloured()) continue;
// find the partners
vector< pair<ShowerPartnerType::Type, tShowerParticlePtr> > partners =
findQCDPartners(*cit,particles);
// must have a partner
if(partners.empty()) {
throw Exception() << "`Failed to make colour connections in "
<< "PartnerFinder::setQCDInitialEvolutionScales"
<< (**cit)
<< Exception::eventerror;
}
// Calculate the evolution scales for all possible pairs of of particles
vector<pair<Energy,Energy> > scales;
int position(-1);
for(unsigned int ix=0;ix< partners.size();++ix) {
if(partners[ix].second) position = ix;
scales.push_back(calculateInitialEvolutionScales(ShowerPPair(*cit,partners[ix].second),
isDecayCase));
}
assert(position>=0);
for(unsigned int ix=0;ix<partners.size();++ix) {
(**cit).addPartner(ShowerParticle::EvolutionPartner(partners[ix].second,
1.,partners[ix].first,
scales[ix].first));
}
// set scales for all interactions to that of the partner, default
Energy scale = scales[position].first;
for(unsigned int ix=0;ix<partners.size();++ix) {
if(partners[ix].first==ShowerPartnerType::QCDColourLine) {
(**cit).scales().QCD_c =
(**cit).scales().QCD_c_noAO =
(scaleChoice_==0 ? scale : scales[ix].first);
}
else if(partners[ix].first==ShowerPartnerType::QCDAntiColourLine) {
(**cit).scales().QCD_ac =
(**cit).scales().QCD_ac_noAO =
(scaleChoice_==0 ? scale : scales[ix].first);
}
else {
assert(false);
}
}
}
}
}
void PartnerFinder::setInitialQEDEvolutionScales(const ShowerParticleVector &particles,
const bool isDecayCase,
const bool setPartners) {
// loop over all the particles
for(ShowerParticleVector::const_iterator cit = particles.begin();
cit != particles.end(); ++cit) {
// not charged or photon continue
- if(!(**cit).dataPtr()->charged() &&
- (**cit).id()!=ParticleID::gamma) continue;
+ if(!(**cit).dataPtr()->charged()) continue;
// find the potential partners
vector<pair<double,tShowerParticlePtr> > partners = findQEDPartners(*cit,particles,isDecayCase);
if(partners.empty()) {
throw Exception() << "Failed to find partner in "
<< "PartnerFinder::setQEDInitialEvolutionScales"
<< (**cit) << Exception::eventerror;
}
// calculate the probabilities
double prob(0.);
for(unsigned int ix=0;ix<partners.size();++ix) prob += partners[ix].first;
// normalise
for(unsigned int ix=0;ix<partners.size();++ix) partners[ix].first /= prob;
// set the partner if required
int position(-1);
// use QCD partner if set
if(!setPartners&&(*cit)->partner()) {
for(unsigned int ix=0;ix<partners.size();++ix) {
if((*cit)->partner()==partners[ix].second) {
position = ix;
break;
}
}
}
// set the partner
if(setPartners||!(*cit)->partner()||position<0) {
prob = UseRandom::rnd();
for(unsigned int ix=0;ix<partners.size();++ix) {
if(partners[ix].first>prob) {
position = ix;
break;
}
prob -= partners[ix].first;
}
if(position>=0&&(setPartners||!(*cit)->partner())) {
(*cit)->partner(partners[position].second);
}
}
// must have a partner
if(position<0) throw Exception() << "Failed to find partner in "
<< "PartnerFinder::setQEDInitialEvolutionScales"
<< (**cit) << Exception::eventerror;
// Calculate the evolution scales for all possible pairs of of particles
vector<pair<Energy,Energy> > scales;
for(unsigned int ix=0;ix< partners.size();++ix) {
scales.push_back(calculateInitialEvolutionScales(ShowerPPair(*cit,partners[ix].second),
isDecayCase));
}
// store all the possible partners
for(unsigned int ix=0;ix<partners.size();++ix) {
(**cit).addPartner(ShowerParticle::EvolutionPartner(partners[ix].second,
partners[ix].first,
ShowerPartnerType::QED,
scales[ix].first));
}
// set scales
(**cit).scales().QED = scales[position].first;
(**cit).scales().QED_noAO = scales[position].first;
}
}
pair<Energy,Energy> PartnerFinder::
calculateInitialEvolutionScales(const ShowerPPair &particlePair,
const bool isDecayCase) {
bool FS1=FS(particlePair.first),FS2= FS(particlePair.second);
if(FS1 && FS2)
return calculateFinalFinalScales(particlePair);
else if(FS1 && !FS2) {
ShowerPPair a(particlePair.second, particlePair.first);
pair<Energy,Energy> rval = calculateInitialFinalScales(a,isDecayCase);
return pair<Energy,Energy>(rval.second,rval.first);
}
else if(!FS1 &&FS2)
return calculateInitialFinalScales(particlePair,isDecayCase);
else
return calculateInitialInitialScales(particlePair);
}
vector< pair<ShowerPartnerType::Type, tShowerParticlePtr> >
PartnerFinder::findQCDPartners(tShowerParticlePtr particle,
const ShowerParticleVector &particles) {
vector< pair<ShowerPartnerType::Type, tShowerParticlePtr> > partners;
ShowerParticleVector::const_iterator cjt;
for(cjt = particles.begin(); cjt != particles.end(); ++cjt) {
if(!(*cjt)->data().coloured() || particle==*cjt) continue;
// one initial-state and one final-state particle
if(FS(particle) != FS(*cjt)) {
// loop over all the colours of both particles
for(unsigned int ix=0; ix<CLSIZE(particle); ++ix) {
for(unsigned int jx=0; jx<CLSIZE(*cjt); ++jx) {
if((CL(particle,ix) && CL(particle,ix)==CL(*cjt,jx))) {
partners.push_back(make_pair(ShowerPartnerType:: QCDColourLine,*cjt));
}
}
}
//loop over all the anti-colours of both particles
for(unsigned int ix=0; ix<ACLSIZE(particle); ++ix) {
for(unsigned int jx=0; jx<ACLSIZE(*cjt); ++jx) {
if((ACL(particle,ix) && ACL(particle,ix)==ACL(*cjt,jx))) {
partners.push_back(make_pair(ShowerPartnerType::QCDAntiColourLine,*cjt));
}
}
}
}
// two initial-state or two final-state particles
else {
//loop over the colours of the first particle and the anti-colours of the other
for(unsigned int ix=0; ix<CLSIZE(particle); ++ix){
for(unsigned int jx=0; jx<ACLSIZE(*cjt); ++jx){
if(CL(particle,ix) && CL(particle,ix)==ACL(*cjt,jx)) {
partners.push_back(make_pair(ShowerPartnerType:: QCDColourLine,*cjt));
}
}
}
//loop over the anti-colours of the first particle and the colours of the other
for(unsigned int ix=0; ix<ACLSIZE(particle); ++ix){
for(unsigned int jx=0; jx<CLSIZE(*cjt); jx++){
if(ACL(particle,ix) && ACL(particle,ix)==CL(*cjt,jx)) {
partners.push_back(make_pair(ShowerPartnerType::QCDAntiColourLine,*cjt));
}
}
}
}
}
// if we haven't found any partners look for RPV
if (partners.empty()) {
// special for RPV
tColinePtr col = CL(particle);
if(FS(particle)&&col&&col->sourceNeighbours().first) {
tColinePair cpair = col->sourceNeighbours();
for(cjt=particles.begin();cjt!=particles.end();++cjt) {
if(( FS(*cjt) && ( CL(*cjt) == cpair.first || CL(*cjt) == cpair.second))||
(!FS(*cjt) && (ACL(*cjt) == cpair.first || ACL(*cjt) == cpair.second ))) {
partners.push_back(make_pair(ShowerPartnerType:: QCDColourLine,*cjt));
}
}
}
else if(col&&col->sinkNeighbours().first) {
tColinePair cpair = col->sinkNeighbours();
for(cjt=particles.begin();cjt!=particles.end();++cjt) {
if(( FS(*cjt) && (ACL(*cjt) == cpair.first || ACL(*cjt) == cpair.second))||
(!FS(*cjt) && ( CL(*cjt) == cpair.first || CL(*cjt) == cpair.second))) {
partners.push_back(make_pair(ShowerPartnerType:: QCDColourLine,*cjt));
}
}
}
col = ACL(particle);
if(FS(particle)&&col&&col->sinkNeighbours().first) {
tColinePair cpair = col->sinkNeighbours();
for(cjt=particles.begin();cjt!=particles.end();++cjt) {
if(( FS(*cjt) && (ACL(*cjt) == cpair.first || ACL(*cjt) == cpair.second))||
(!FS(*cjt) && ( CL(*cjt) == cpair.first || CL(*cjt) == cpair.second ))) {
partners.push_back(make_pair(ShowerPartnerType::QCDAntiColourLine,*cjt));
}
}
}
else if(col&&col->sourceNeighbours().first) {
tColinePair cpair = col->sourceNeighbours();
for(cjt=particles.begin();cjt!=particles.end();++cjt) {
if(( FS(*cjt) && ( CL(*cjt) == cpair.first || CL(*cjt) == cpair.second))||
(!FS(*cjt) && (ACL(*cjt) == cpair.first ||ACL(*cjt) == cpair.second))) {
partners.push_back(make_pair(ShowerPartnerType::QCDAntiColourLine,*cjt));
}
}
}
}
// return the partners
return partners;
}
vector< pair<double, tShowerParticlePtr> >
PartnerFinder::findQEDPartners(tShowerParticlePtr particle,
const ShowerParticleVector &particles,
const bool isDecayCase) {
vector< pair<double, tShowerParticlePtr> > partners;
ShowerParticleVector::const_iterator cjt;
double pcharge = particle->id()==ParticleID::gamma ? 1 : double(particle->data().iCharge());
vector< pair<double, tShowerParticlePtr> > photons;
for(cjt = particles.begin(); cjt != particles.end(); ++cjt) {
if(particle == *cjt) continue;
if((**cjt).id()==ParticleID::gamma) photons.push_back(make_pair(1.,*cjt));
if(!(*cjt)->data().charged() ) continue;
double charge = pcharge*double((*cjt)->data().iCharge());
if( FS(particle) != FS(*cjt) ) charge *=-1.;
if( QEDPartner_ != 0 && !isDecayCase ) {
// only include II and FF as requested
if( QEDPartner_ == 1 && FS(particle) != FS(*cjt) )
continue;
// only include IF is requested
else if(QEDPartner_ == 2 && FS(particle) == FS(*cjt) )
continue;
}
if(particle->id()==ParticleID::gamma) charge = -abs(charge);
// only keep positive dipoles
if(charge<0.) partners.push_back(make_pair(-charge,*cjt));
}
if(particle->id()==ParticleID::gamma&& partners.empty()) {
return photons;
}
return partners;
}
diff --git a/Shower/QTilde/QTildeShowerHandler.cc b/Shower/QTilde/QTildeShowerHandler.cc
--- a/Shower/QTilde/QTildeShowerHandler.cc
+++ b/Shower/QTilde/QTildeShowerHandler.cc
@@ -1,3306 +1,3309 @@
// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
// functions of the QTildeShowerHandler class.
//
#include "QTildeShowerHandler.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Interface/Switch.h"
#include "ThePEG/Interface/Reference.h"
#include "ThePEG/Interface/RefVector.h"
#include "ThePEG/Interface/Parameter.h"
#include "ThePEG/EventRecord/Particle.h"
#include "ThePEG/Repository/UseRandom.h"
#include "ThePEG/Repository/EventGenerator.h"
#include "ThePEG/Utilities/DescribeClass.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
#include "ThePEG/Utilities/EnumIO.h"
#include "Herwig/Shower/QTilde/Base/ShowerParticle.h"
#include "Herwig/PDF/MPIPDF.h"
#include "Herwig/PDF/MinBiasPDF.h"
#include "Herwig/Shower/QTilde/Base/ShowerTree.h"
#include "Herwig/Shower/QTilde/Base/KinematicsReconstructor.h"
#include "Herwig/Shower/QTilde/Base/PartnerFinder.h"
#include "Herwig/PDF/HwRemDecayer.h"
#include "Herwig/Shower/QTilde/Base/ShowerVertex.h"
#include "ThePEG/Repository/CurrentGenerator.h"
#include "Herwig/MatrixElement/Matchbox/Base/SubtractedME.h"
#include "Herwig/MatrixElement/Matchbox/MatchboxFactory.h"
#include "ThePEG/PDF/PartonExtractor.h"
using namespace Herwig;
namespace {
/**
* A struct to order the particles in the same way as in the DecayMode's
*/
struct ParticleOrdering {
/**
* Operator for the ordering
* @param p1 The first ParticleData object
* @param p2 The second ParticleData object
*/
bool operator() (tcPDPtr p1, tcPDPtr p2) {
return abs(p1->id()) > abs(p2->id()) ||
( abs(p1->id()) == abs(p2->id()) && p1->id() > p2->id() ) ||
( p1->id() == p2->id() && p1->fullName() > p2->fullName() );
}
};
typedef multiset<tcPDPtr,ParticleOrdering> OrderedParticles;
/**
* Cached lookup of decay modes.
* Generator::findDecayMode() is not efficient.
*/
tDMPtr findDecayMode(const string & tag) {
static map<string,DMPtr> cache;
map<string,DMPtr>::const_iterator pos = cache.find(tag);
if ( pos != cache.end() )
return pos->second;
tDMPtr dm = CurrentGenerator::current().findDecayMode(tag);
cache[tag] = dm;
return dm;
}
}
bool QTildeShowerHandler::_hardEmissionModeWarn = true;
bool QTildeShowerHandler::_missingTruncWarn = true;
QTildeShowerHandler::QTildeShowerHandler() :
_maxtry(100), _meCorrMode(1), _reconOpt(0),
_hardVetoReadOption(false),
_iptrms(ZERO), _beta(0.), _gamma(ZERO), _iptmax(),
_limitEmissions(0), _initialenhance(1.), _finalenhance(1.),
interaction_(ShowerInteraction::Both),
_trunc_Mode(true), _hardEmissionMode(0),
_spinOpt(1), _softOpt(2), _hardPOWHEG(false), muPt(ZERO),
_maxTryFSR(100000), _maxFailFSR(100), _fracFSR(0.001),
_nFSR(0), _nFailedFSR(0)
{}
QTildeShowerHandler::~QTildeShowerHandler() {}
IBPtr QTildeShowerHandler::clone() const {
return new_ptr(*this);
}
IBPtr QTildeShowerHandler::fullclone() const {
return new_ptr(*this);
}
void QTildeShowerHandler::persistentOutput(PersistentOStream & os) const {
os << _model << _splittingGenerator << _maxtry
<< _meCorrMode << _hardVetoReadOption
<< _limitEmissions << _spinOpt << _softOpt << _hardPOWHEG
<< ounit(_iptrms,GeV) << _beta << ounit(_gamma,GeV) << ounit(_iptmax,GeV)
<< _vetoes << _trunc_Mode << _hardEmissionMode << _reconOpt
<< ounit(muPt,GeV)
<< oenum(interaction_) << _maxTryFSR << _maxFailFSR << _fracFSR;
}
void QTildeShowerHandler::persistentInput(PersistentIStream & is, int) {
is >> _model >> _splittingGenerator >> _maxtry
>> _meCorrMode >> _hardVetoReadOption
>> _limitEmissions >> _spinOpt >> _softOpt >> _hardPOWHEG
>> iunit(_iptrms,GeV) >> _beta >> iunit(_gamma,GeV) >> iunit(_iptmax,GeV)
>> _vetoes >> _trunc_Mode >> _hardEmissionMode >> _reconOpt
>> iunit(muPt,GeV)
>> ienum(interaction_) >> _maxTryFSR >> _maxFailFSR >> _fracFSR;
}
// The following static variable is needed for the type
// description system in ThePEG.
DescribeClass<QTildeShowerHandler,ShowerHandler>
describeHerwigQTildeShowerHandler("Herwig::QTildeShowerHandler", "HwShower.so");
void QTildeShowerHandler::Init() {
static ClassDocumentation<QTildeShowerHandler> documentation
("TheQTildeShowerHandler class is the main class"
" for the angular-ordered parton shower",
"The Shower evolution was performed using an algorithm described in "
"\\cite{Marchesini:1983bm,Marchesini:1987cf,Gieseke:2003rz,Bahr:2008pv}.",
"%\\cite{Marchesini:1983bm}\n"
"\\bibitem{Marchesini:1983bm}\n"
" G.~Marchesini and B.~R.~Webber,\n"
" ``Simulation Of QCD Jets Including Soft Gluon Interference,''\n"
" Nucl.\\ Phys.\\ B {\\bf 238}, 1 (1984).\n"
" %%CITATION = NUPHA,B238,1;%%\n"
"%\\cite{Marchesini:1987cf}\n"
"\\bibitem{Marchesini:1987cf}\n"
" G.~Marchesini and B.~R.~Webber,\n"
" ``Monte Carlo Simulation of General Hard Processes with Coherent QCD\n"
" Radiation,''\n"
" Nucl.\\ Phys.\\ B {\\bf 310}, 461 (1988).\n"
" %%CITATION = NUPHA,B310,461;%%\n"
"%\\cite{Gieseke:2003rz}\n"
"\\bibitem{Gieseke:2003rz}\n"
" S.~Gieseke, P.~Stephens and B.~Webber,\n"
" ``New formalism for QCD parton showers,''\n"
" JHEP {\\bf 0312}, 045 (2003)\n"
" [arXiv:hep-ph/0310083].\n"
" %%CITATION = JHEPA,0312,045;%%\n"
);
static Reference<QTildeShowerHandler,SplittingGenerator>
interfaceSplitGen("SplittingGenerator",
"A reference to the SplittingGenerator object",
&Herwig::QTildeShowerHandler::_splittingGenerator,
false, false, true, false);
static Reference<QTildeShowerHandler,ShowerModel> interfaceShowerModel
("ShowerModel",
"The pointer to the object which defines the shower evolution model.",
&QTildeShowerHandler::_model, false, false, true, false, false);
static Parameter<QTildeShowerHandler,unsigned int> interfaceMaxTry
("MaxTry",
"The maximum number of attempts to generate the shower from a"
" particular ShowerTree",
&QTildeShowerHandler::_maxtry, 100, 1, 1000,
false, false, Interface::limited);
static Switch<QTildeShowerHandler, unsigned int> ifaceMECorrMode
("MECorrMode",
"Choice of the ME Correction Mode",
&QTildeShowerHandler::_meCorrMode, 1, false, false);
static SwitchOption off
(ifaceMECorrMode,"No","MECorrections off", 0);
static SwitchOption on
(ifaceMECorrMode,"Yes","hard+soft on", 1);
static SwitchOption hard
(ifaceMECorrMode,"Hard","only hard on", 2);
static SwitchOption soft
(ifaceMECorrMode,"Soft","only soft on", 3);
static Switch<QTildeShowerHandler, bool> ifaceHardVetoReadOption
("HardVetoReadOption",
"Apply read-in scale veto to all collisions or just the primary one?",
&QTildeShowerHandler::_hardVetoReadOption, false, false, false);
static SwitchOption AllCollisions
(ifaceHardVetoReadOption,
"AllCollisions",
"Read-in pT veto applied to primary and secondary collisions.",
false);
static SwitchOption PrimaryCollision
(ifaceHardVetoReadOption,
"PrimaryCollision",
"Read-in pT veto applied to primary but not secondary collisions.",
true);
static Parameter<QTildeShowerHandler, Energy> ifaceiptrms
("IntrinsicPtGaussian",
"RMS of intrinsic pT of Gaussian distribution:\n"
"2*(1-Beta)*exp(-sqr(intrinsicpT/RMS))/sqr(RMS)",
&QTildeShowerHandler::_iptrms, GeV, ZERO, ZERO, 1000000.0*GeV,
false, false, Interface::limited);
static Parameter<QTildeShowerHandler, double> ifacebeta
("IntrinsicPtBeta",
"Proportion of inverse quadratic distribution in generating intrinsic pT.\n"
"(1-Beta) is the proportion of Gaussian distribution",
&QTildeShowerHandler::_beta, 0, 0, 1,
false, false, Interface::limited);
static Parameter<QTildeShowerHandler, Energy> ifacegamma
("IntrinsicPtGamma",
"Parameter for inverse quadratic:\n"
"2*Beta*Gamma/(sqr(Gamma)+sqr(intrinsicpT))",
&QTildeShowerHandler::_gamma,GeV, ZERO, ZERO, 100000.0*GeV,
false, false, Interface::limited);
static Parameter<QTildeShowerHandler, Energy> ifaceiptmax
("IntrinsicPtIptmax",
"Upper bound on intrinsic pT for inverse quadratic",
&QTildeShowerHandler::_iptmax,GeV, ZERO, ZERO, 100000.0*GeV,
false, false, Interface::limited);
static RefVector<QTildeShowerHandler,ShowerVeto> ifaceVetoes
("Vetoes",
"The vetoes to be checked during showering",
&QTildeShowerHandler::_vetoes, -1,
false,false,true,true,false);
static Switch<QTildeShowerHandler,unsigned int> interfaceLimitEmissions
("LimitEmissions",
"Limit the number and type of emissions for testing",
&QTildeShowerHandler::_limitEmissions, 0, false, false);
static SwitchOption interfaceLimitEmissionsNoLimit
(interfaceLimitEmissions,
"NoLimit",
"Allow an arbitrary number of emissions",
0);
static SwitchOption interfaceLimitEmissionsOneInitialStateEmission
(interfaceLimitEmissions,
"OneInitialStateEmission",
"Allow one emission in the initial state and none in the final state",
1);
static SwitchOption interfaceLimitEmissionsOneFinalStateEmission
(interfaceLimitEmissions,
"OneFinalStateEmission",
"Allow one emission in the final state and none in the initial state",
2);
static SwitchOption interfaceLimitEmissionsHardOnly
(interfaceLimitEmissions,
"HardOnly",
"Only allow radiation from the hard ME correction",
3);
static SwitchOption interfaceLimitEmissionsOneEmission
(interfaceLimitEmissions,
"OneEmission",
"Allow one emission in either the final state or initial state, but not both",
4);
static Switch<QTildeShowerHandler,bool> interfaceTruncMode
("TruncatedShower", "Include the truncated shower?",
&QTildeShowerHandler::_trunc_Mode, 1, false, false);
static SwitchOption interfaceTruncMode0
(interfaceTruncMode,"No","Truncated Shower is OFF", 0);
static SwitchOption interfaceTruncMode1
(interfaceTruncMode,"Yes","Truncated Shower is ON", 1);
static Switch<QTildeShowerHandler,int> interfaceHardEmissionMode
("HardEmissionMode",
"Whether to use ME corrections or POWHEG for the hardest emission",
&QTildeShowerHandler::_hardEmissionMode, 0, false, false);
static SwitchOption interfaceHardEmissionModeDecayMECorrection
(interfaceHardEmissionMode,
"DecayMECorrection",
"Old fashioned ME correction for decays only",
-1);
static SwitchOption interfaceHardEmissionModeMECorrection
(interfaceHardEmissionMode,
"MECorrection",
"Old fashioned ME correction",
0);
static SwitchOption interfaceHardEmissionModePOWHEG
(interfaceHardEmissionMode,
"POWHEG",
"Powheg style hard emission using internal matrix elements",
1);
static SwitchOption interfaceHardEmissionModeMatchboxPOWHEG
(interfaceHardEmissionMode,
"MatchboxPOWHEG",
"Powheg style emission for the hard process using Matchbox",
2);
static SwitchOption interfaceHardEmissionModeFullPOWHEG
(interfaceHardEmissionMode,
"FullPOWHEG",
"Powheg style emission for the hard process using Matchbox "
"and decays using internal matrix elements",
3);
static Switch<QTildeShowerHandler,ShowerInteraction::Type> interfaceInteractions
("Interactions",
"The interactions to be used in the shower",
&QTildeShowerHandler::interaction_, ShowerInteraction::Both, false, false);
static SwitchOption interfaceInteractionsQCD
(interfaceInteractions,
"QCD",
"Only QCD radiation",
ShowerInteraction::QCD);
static SwitchOption interfaceInteractionsQED
(interfaceInteractions,
"QED",
"Only QEd radiation",
ShowerInteraction::QED);
static SwitchOption interfaceInteractionsQCDandQED
(interfaceInteractions,
"QCDandQED",
"Both QED and QCD radiation",
ShowerInteraction::Both);
static Switch<QTildeShowerHandler,unsigned int> interfaceReconstructionOption
("ReconstructionOption",
"Treatment of the reconstruction of the transverse momentum of "
"a branching from the evolution scale.",
&QTildeShowerHandler::_reconOpt, 0, false, false);
static SwitchOption interfaceReconstructionOptionCutOff
(interfaceReconstructionOption,
"CutOff",
"Use the cut-off masses in the calculation",
0);
static SwitchOption interfaceReconstructionOptionOffShell
(interfaceReconstructionOption,
"OffShell",
"Use the off-shell masses in the calculation veto the emission of the parent,"
" no veto in generation of emissions from children",
1);
static SwitchOption interfaceReconstructionOptionOffShell2
(interfaceReconstructionOption,
"OffShell2",
"Use the off-shell masses in the calculation veto the emissions from the children."
" no veto in generation of emissions from children",
2);
static SwitchOption interfaceReconstructionOptionOffShell3
(interfaceReconstructionOption,
"OffShell3",
"Use the off-shell masses in the calculation veto the emissions from the children."
" veto in generation of emissions from children using cut-off for second parton",
3);
static Switch<QTildeShowerHandler,unsigned int> interfaceSpinCorrelations
("SpinCorrelations",
"Treatment of spin correlations in the parton shower",
&QTildeShowerHandler::_spinOpt, 1, false, false);
static SwitchOption interfaceSpinCorrelationsOff
(interfaceSpinCorrelations,
"No",
"No spin correlations",
0);
static SwitchOption interfaceSpinCorrelationsSpin
(interfaceSpinCorrelations,
"Yes",
"Include the azimuthal spin correlations only",
1);
static Switch<QTildeShowerHandler,unsigned int> interfaceSoftCorrelations
("SoftCorrelations",
"Option for the treatment of soft correlations in the parton shower",
&QTildeShowerHandler::_softOpt, 2, false, false);
static SwitchOption interfaceSoftCorrelationsNone
(interfaceSoftCorrelations,
"No",
"No soft correlations",
0);
static SwitchOption interfaceSoftCorrelationsFull
(interfaceSoftCorrelations,
"Full",
"Use the full eikonal",
1);
static SwitchOption interfaceSoftCorrelationsSingular
(interfaceSoftCorrelations,
"Singular",
"Use original Webber-Marchisini form",
2);
static Switch<QTildeShowerHandler,bool> interfaceHardPOWHEG
("HardPOWHEG",
"Treatment of powheg emissions which are too hard to have a shower interpretation",
&QTildeShowerHandler::_hardPOWHEG, false, false, false);
static SwitchOption interfaceHardPOWHEGAsShower
(interfaceHardPOWHEG,
"AsShower",
"Still interpret as shower emissions",
false);
static SwitchOption interfaceHardPOWHEGRealEmission
(interfaceHardPOWHEG,
"RealEmission",
"Generate shower from the real emmission configuration",
true);
static Parameter<QTildeShowerHandler,unsigned int> interfaceMaxTryFSR
("MaxTryFSR",
"The maximum number of attempted FSR emissions in"
" the generation of the FSR",
&QTildeShowerHandler::_maxTryFSR, 100000, 10, 100000000,
false, false, Interface::limited);
static Parameter<QTildeShowerHandler,unsigned int> interfaceMaxFailFSR
("MaxFailFSR",
"Maximum number of failures generating the FSR",
&QTildeShowerHandler::_maxFailFSR, 100, 1, 100000000,
false, false, Interface::limited);
static Parameter<QTildeShowerHandler,double> interfaceFSRFailureFraction
("FSRFailureFraction",
"Maximum fraction of events allowed to fail due to too many FSR emissions",
&QTildeShowerHandler::_fracFSR, 0.001, 1e-10, 1,
false, false, Interface::limited);
}
tPPair QTildeShowerHandler::cascade(tSubProPtr sub,
XCPtr xcomb) {
// use me for reference in tex file etc
useMe();
prepareCascade(sub);
// set things up in the base class
resetWeights();
// check if anything needs doing
if ( !doFSR() && ! doISR() )
return sub->incoming();
// start of the try block for the whole showering process
unsigned int countFailures=0;
while (countFailures<maxtry()) {
try {
decay_.clear();
done_.clear();
PerturbativeProcessPtr hard;
DecayProcessMap decay;
splitHardProcess(firstInteraction() ? tagged() :
tPVector(currentSubProcess()->outgoing().begin(),
currentSubProcess()->outgoing().end()),
hard,decay);
ShowerTree::constructTrees(hard_,decay_,hard,decay);
// if no hard process
if(!hard_) throw Exception() << "Shower starting with a decay"
<< "is not implemented"
<< Exception::runerror;
// perform the shower for the hard process
showerHardProcess(hard_,xcomb);
done_.push_back(hard_);
hard_->updateAfterShower(decay_);
// if no decaying particles to shower break out of the loop
if(decay_.empty()) break;
// shower the decay products
while(!decay_.empty()) {
// find particle whose production process has been showered
ShowerDecayMap::iterator dit = decay_.begin();
while(!dit->second->parent()->hasShowered() && dit!=decay_.end()) ++dit;
assert(dit!=decay_.end());
// get the particle
ShowerTreePtr decayingTree = dit->second;
// remove it from the multimap
decay_.erase(dit);
// make sure the particle has been decayed
QTildeShowerHandler::decay(decayingTree,decay_);
// now shower the decay
showerDecay(decayingTree);
done_.push_back(decayingTree);
decayingTree->updateAfterShower(decay_);
}
// suceeded break out of the loop
break;
}
catch (KinematicsReconstructionVeto) {
resetWeights();
++countFailures;
}
}
// if loop exited because of too many tries, throw event away
if (countFailures >= maxtry()) {
resetWeights();
hard_=ShowerTreePtr();
decay_.clear();
done_.clear();
throw Exception() << "Too many tries for main while loop "
<< "in ShowerHandler::cascade()."
<< Exception::eventerror;
}
//enter the particles in the event record
fillEventRecord();
// clear storage
hard_=ShowerTreePtr();
decay_.clear();
done_.clear();
// non hadronic case return
if (!isResolvedHadron(incomingBeams().first ) &&
!isResolvedHadron(incomingBeams().second) )
return incomingBeams();
// remake the remnants (needs to be after the colours are sorted
// out in the insertion into the event record)
if ( firstInteraction() ) return remakeRemnant(sub->incoming());
//Return the new pair of incoming partons. remakeRemnant is not
//necessary here, because the secondary interactions are not yet
//connected to the remnants.
return make_pair(findFirstParton(sub->incoming().first ),
findFirstParton(sub->incoming().second));
}
void QTildeShowerHandler::fillEventRecord() {
// create a new step
StepPtr pstep = newStep();
assert(!done_.empty());
assert(done_[0]->isHard());
// insert the steps
for(unsigned int ix=0;ix<done_.size();++ix) {
done_[ix]->fillEventRecord(pstep,doISR(),doFSR());
}
}
HardTreePtr QTildeShowerHandler::generateCKKW(ShowerTreePtr ) const {
return HardTreePtr();
}
void QTildeShowerHandler::doinit() {
ShowerHandler::doinit();
// interactions may have been changed through a setup file so we
// clear it up here
// calculate max no of FSR vetos
_maxFailFSR = max(int(_maxFailFSR), int(_fracFSR*double(generator()->N())));
}
void QTildeShowerHandler::generateIntrinsicpT(vector<ShowerProgenitorPtr> particlesToShower) {
_intrinsic.clear();
if ( !ipTon() || !doISR() ) return;
// don't do anything for the moment for secondary scatters
if( !firstInteraction() ) return;
// generate intrinsic pT
for(unsigned int ix=0;ix<particlesToShower.size();++ix) {
// only consider initial-state particles
if(particlesToShower[ix]->progenitor()->isFinalState()) continue;
if(!particlesToShower[ix]->progenitor()->dataPtr()->coloured()) continue;
Energy ipt;
if(UseRandom::rnd() > _beta) {
ipt=_iptrms*sqrt(-log(UseRandom::rnd()));
}
else {
ipt=_gamma*sqrt(pow(1.+sqr(_iptmax/_gamma), UseRandom::rnd())-1.);
}
pair<Energy,double> pt = make_pair(ipt,UseRandom::rnd(Constants::twopi));
_intrinsic[particlesToShower[ix]] = pt;
}
}
void QTildeShowerHandler::setupMaximumScales(const vector<ShowerProgenitorPtr> & p,
XCPtr xcomb) {
// let POWHEG events radiate freely
if(_hardEmissionMode>0&&hardTree()) {
vector<ShowerProgenitorPtr>::const_iterator ckt = p.begin();
for (; ckt != p.end(); ckt++) (*ckt)->maxHardPt(Constants::MaxEnergy);
return;
}
// return if no vetos
if (!restrictPhasespace()) return;
// find out if hard partonic subprocess.
bool isPartonic(false);
map<ShowerProgenitorPtr,ShowerParticlePtr>::const_iterator
cit = _currenttree->incomingLines().begin();
Lorentz5Momentum pcm;
for(; cit!=currentTree()->incomingLines().end(); ++cit) {
pcm += cit->first->progenitor()->momentum();
isPartonic |= cit->first->progenitor()->coloured();
}
// find minimum pt from hard process, the maximum pt from all outgoing
// coloured lines (this is simpler and more general than
// 2stu/(s^2+t^2+u^2)). Maximum scale for scattering processes will
// be transverse mass.
Energy ptmax = generator()->maximumCMEnergy();
// general case calculate the scale
if ( !hardScaleIsMuF() || (hardVetoReadOption()&&!firstInteraction()) ) {
// scattering process
if(currentTree()->isHard()) {
assert(xcomb);
// coloured incoming particles
if (isPartonic) {
map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cjt = currentTree()->outgoingLines().begin();
for(; cjt!=currentTree()->outgoingLines().end(); ++cjt) {
if (cjt->first->progenitor()->coloured())
ptmax = min(ptmax,cjt->first->progenitor()->momentum().mt());
}
}
if (ptmax == generator()->maximumCMEnergy() ) ptmax = pcm.m();
if(hardScaleIsMuF()&&hardVetoReadOption()&&
!firstInteraction()) {
ptmax=min(ptmax,sqrt(xcomb->lastShowerScale()));
}
}
// decay, incoming() is the decaying particle.
else {
ptmax = currentTree()->incomingLines().begin()->first
->progenitor()->momentum().mass();
}
}
// hepeup.SCALUP is written into the lastXComb by the
// LesHouchesReader itself - use this by user's choice.
// Can be more general than this.
else {
if(currentTree()->isHard()) {
assert(xcomb);
ptmax = sqrt( xcomb->lastShowerScale() );
}
else {
ptmax = currentTree()->incomingLines().begin()->first
->progenitor()->momentum().mass();
}
}
ptmax *= hardScaleFactor();
// set maxHardPt for all progenitors. For partonic processes this
// is now the max pt in the FS, for non-partonic processes or
// processes with no coloured FS the invariant mass of the IS
vector<ShowerProgenitorPtr>::const_iterator ckt = p.begin();
for (; ckt != p.end(); ckt++) (*ckt)->maxHardPt(ptmax);
}
void QTildeShowerHandler::setupHardScales(const vector<ShowerProgenitorPtr> & p,
XCPtr xcomb) {
if ( hardScaleIsMuF() &&
(!hardVetoReadOption() || firstInteraction()) ) {
Energy hardScale = ZERO;
if(currentTree()->isHard()) {
assert(xcomb);
hardScale = sqrt( xcomb->lastShowerScale() );
}
else {
hardScale = currentTree()->incomingLines().begin()->first
->progenitor()->momentum().mass();
}
hardScale *= hardScaleFactor();
vector<ShowerProgenitorPtr>::const_iterator ckt = p.begin();
for (; ckt != p.end(); ckt++) (*ckt)->hardScale(hardScale);
muPt = hardScale;
}
}
void QTildeShowerHandler::showerHardProcess(ShowerTreePtr hard, XCPtr xcomb) {
_hardme = HwMEBasePtr();
// extract the matrix element
tStdXCombPtr lastXC = dynamic_ptr_cast<tStdXCombPtr>(xcomb);
if(lastXC) {
_hardme = dynamic_ptr_cast<HwMEBasePtr>(lastXC->matrixElement());
}
_decayme = HwDecayerBasePtr();
// set the current tree
currentTree(hard);
hardTree(HardTreePtr());
// work out the type of event
currentTree()->xcombPtr(dynamic_ptr_cast<StdXCombPtr>(xcomb));
currentTree()->identifyEventType();
checkFlags();
// number of attempts if more than one interaction switched on
unsigned int interactionTry=0;
do {
try {
// generate the showering
doShowering(true,xcomb);
// if no vetos return
return;
}
catch (InteractionVeto) {
currentTree()->clear();
++interactionTry;
}
}
while(interactionTry<=5);
throw Exception() << "Too many tries for shower in "
<< "QTildeShowerHandler::showerHardProcess()"
<< Exception::eventerror;
}
void QTildeShowerHandler::hardMatrixElementCorrection(bool hard) {
// set the initial enhancement factors for the soft correction
_initialenhance = 1.;
_finalenhance = 1.;
// if hard matrix element switched off return
if(!MECOn(hard)) return;
// see if we can get the correction from the matrix element
// or decayer
if(hard) {
if(_hardme&&_hardme->hasMECorrection()) {
_hardme->initializeMECorrection(_currenttree,
_initialenhance,_finalenhance);
if(hardMEC(hard))
_hardme->applyHardMatrixElementCorrection(_currenttree);
}
}
else {
if(_decayme&&_decayme->hasMECorrection()) {
_decayme->initializeMECorrection(_currenttree,
_initialenhance,_finalenhance);
if(hardMEC(hard))
_decayme->applyHardMatrixElementCorrection(_currenttree);
}
}
}
ShowerParticleVector QTildeShowerHandler::createTimeLikeChildren(tShowerParticlePtr, IdList ids) {
// Create the ShowerParticle objects for the two children of
// the emitting particle; set the parent/child relationship
// if same as definition create particles, otherwise create cc
ShowerParticleVector children;
for(unsigned int ix=0;ix<2;++ix) {
children.push_back(new_ptr(ShowerParticle(ids[ix+1],true)));
if(children[ix]->id()==_progenitor->id()&&!ids[ix+1]->stable())
children[ix]->set5Momentum(Lorentz5Momentum(_progenitor->progenitor()->mass()));
else
children[ix]->set5Momentum(Lorentz5Momentum(ids[ix+1]->mass()));
}
return children;
}
bool QTildeShowerHandler::timeLikeShower(tShowerParticlePtr particle,
ShowerInteraction::Type type,
Branching fb, bool first) {
// don't do anything if not needed
if(_limitEmissions == 1 || hardOnly() ||
( _limitEmissions == 2 && _nfs != 0) ||
( _limitEmissions == 4 && _nfs + _nis != 0) ) {
if(particle->spinInfo()) particle->spinInfo()->develop();
return false;
}
// too many tries
if(_nFSR>=_maxTryFSR) {
++_nFailedFSR;
// too many failed events
if(_nFailedFSR>=_maxFailFSR)
throw Exception() << "Too many events have failed due to too many shower emissions, in\n"
<< "QTildeShowerHandler::timeLikeShower(). Terminating run\n"
<< Exception::runerror;
throw Exception() << "Too many attempted emissions in QTildeShowerHandler::timeLikeShower()\n"
<< Exception::eventerror;
}
// generate the emission
ShowerParticleVector children;
int ntry=0;
// generate the emission
if(!fb.kinematics)
fb = selectTimeLikeBranching(particle,type,HardBranchingPtr());
// no emission, return
if(!fb.kinematics) {
if(particle->spinInfo()) particle->spinInfo()->develop();
return false;
}
Branching fc[2];
bool setupChildren = true;
while (ntry<50) {
fc[0] = Branching();
fc[1] = Branching();
++ntry;
assert(fb.kinematics);
// has emitted
// Assign the shower kinematics to the emitting particle.
if(setupChildren) {
++_nFSR;
particle->showerKinematics(fb.kinematics);
// check highest pT
if(fb.kinematics->pT()>progenitor()->highestpT())
progenitor()->highestpT(fb.kinematics->pT());
// create the children
children = createTimeLikeChildren(particle,fb.ids);
// update the children
particle->showerKinematics()->
updateChildren(particle, children,fb.type,_reconOpt>=3);
// update number of emissions
++_nfs;
if(_limitEmissions!=0) {
if(children[0]->spinInfo()) children[0]->spinInfo()->develop();
if(children[1]->spinInfo()) children[1]->spinInfo()->develop();
if(particle->spinInfo()) particle->spinInfo()->develop();
return true;
}
setupChildren = false;
}
// select branchings for children
fc[0] = selectTimeLikeBranching(children[0],type,HardBranchingPtr());
fc[1] = selectTimeLikeBranching(children[1],type,HardBranchingPtr());
// old default
if(_reconOpt==0) {
// shower the first particle
if(fc[0].kinematics) timeLikeShower(children[0],type,fc[0],false);
if(children[0]->spinInfo()) children[0]->spinInfo()->develop();
// shower the second particle
if(fc[1].kinematics) timeLikeShower(children[1],type,fc[1],false);
if(children[1]->spinInfo()) children[1]->spinInfo()->develop();
break;
}
// Herwig default
else if(_reconOpt==1) {
// shower the first particle
if(fc[0].kinematics) timeLikeShower(children[0],type,fc[0],false);
if(children[0]->spinInfo()) children[0]->spinInfo()->develop();
// shower the second particle
if(fc[1].kinematics) timeLikeShower(children[1],type,fc[1],false);
if(children[1]->spinInfo()) children[1]->spinInfo()->develop();
// branching has happened
particle->showerKinematics()->updateParent(particle, children,fb.type);
// clean up the vetoed emission
if(particle->virtualMass()==ZERO) {
particle->showerKinematics(ShoKinPtr());
for(unsigned int ix=0;ix<children.size();++ix)
particle->abandonChild(children[ix]);
children.clear();
if(particle->spinInfo()) particle->spinInfo()->decayVertex(VertexPtr());
particle->vetoEmission(fb.type,fb.kinematics->scale());
// generate the new emission
fb = selectTimeLikeBranching(particle,type,HardBranchingPtr());
// no emission, return
if(!fb.kinematics) {
if(particle->spinInfo()) particle->spinInfo()->develop();
return false;
}
setupChildren = true;
continue;
}
else
break;
}
// veto children
else if(_reconOpt>=2) {
// cut-off masses for the branching
const vector<Energy> & virtualMasses = fb.sudakov->virtualMasses(fb.ids);
// compute the masses of the children
Energy masses[3];
for(unsigned int ix=0;ix<2;++ix) {
if(fc[ix].kinematics) {
const vector<Energy> & vm = fc[ix].sudakov->virtualMasses(fc[ix].ids);
Energy2 q2 =
fc[ix].kinematics->z()*(1.-fc[ix].kinematics->z())*sqr(fc[ix].kinematics->scale());
if(fc[ix].ids[0]->id()!=ParticleID::g) q2 += sqr(vm[0]);
masses[ix+1] = sqrt(q2);
}
else {
masses[ix+1] = virtualMasses[ix+1];
}
}
masses[0] = fb.ids[0]->id()!=ParticleID::g ? virtualMasses[0] : ZERO;
double z = fb.kinematics->z();
Energy2 pt2 = z*(1.-z)*(z*(1.-z)*sqr(fb.kinematics->scale()) + sqr(masses[0]))
- sqr(masses[1])*(1.-z) - sqr(masses[2])*z;
if(pt2>=ZERO) {
break;
}
else {
// reset the scales for the children
for(unsigned int ix=0;ix<2;++ix) {
if(fc[ix].kinematics)
children[ix]->vetoEmission(fc[ix].type,fc[ix].kinematics->scale());
else
children[ix]->vetoEmission(ShowerPartnerType::QCDColourLine,ZERO);
children[ix]->virtualMass(ZERO);
}
}
}
};
if(_reconOpt>=2) {
// shower the first particle
if(fc[0].kinematics) timeLikeShower(children[0],type,fc[0],false);
if(children[0]->spinInfo()) children[0]->spinInfo()->develop();
// shower the second particle
if(fc[1].kinematics) timeLikeShower(children[1],type,fc[1],false);
if(children[1]->spinInfo()) children[1]->spinInfo()->develop();
// branching has happened
particle->showerKinematics()->updateParent(particle, children,fb.type);
}
if(first&&!children.empty())
particle->showerKinematics()->resetChildren(particle,children);
if(particle->spinInfo()) particle->spinInfo()->develop();
return true;
}
bool
QTildeShowerHandler::spaceLikeShower(tShowerParticlePtr particle, PPtr beam,
ShowerInteraction::Type type) {
//using the pdf's associated with the ShowerHandler assures, that
//modified pdf's are used for the secondary interactions via
//CascadeHandler::resetPDFs(...)
tcPDFPtr pdf;
if(firstPDF().particle() == _beam)
pdf = firstPDF().pdf();
if(secondPDF().particle() == _beam)
pdf = secondPDF().pdf();
Energy freeze = pdfFreezingScale();
// don't do anything if not needed
if(_limitEmissions == 2 || hardOnly() ||
( _limitEmissions == 1 && _nis != 0 ) ||
( _limitEmissions == 4 && _nis + _nfs != 0 ) ) {
if(particle->spinInfo()) particle->spinInfo()->develop();
return false;
}
Branching bb;
// generate branching
while (true) {
bb=_splittingGenerator->chooseBackwardBranching(*particle,beam,
_initialenhance,
_beam,type,
pdf,freeze);
// return if no emission
if(!bb.kinematics) {
if(particle->spinInfo()) particle->spinInfo()->develop();
return false;
}
// if not vetoed break
if(!spaceLikeVetoed(bb,particle)) break;
// otherwise reset scale and continue
particle->vetoEmission(bb.type,bb.kinematics->scale());
if(particle->spinInfo()) particle->spinInfo()->decayVertex(VertexPtr());
}
// assign the splitting function and shower kinematics
particle->showerKinematics(bb.kinematics);
if(bb.kinematics->pT()>progenitor()->highestpT())
progenitor()->highestpT(bb.kinematics->pT());
// For the time being we are considering only 1->2 branching
// particles as in Sudakov form factor
tcPDPtr part[2]={bb.ids[0],bb.ids[2]};
// Now create the actual particles, make the otherChild a final state
// particle, while the newParent is not
ShowerParticlePtr newParent = new_ptr(ShowerParticle(part[0],false));
ShowerParticlePtr otherChild = new_ptr(ShowerParticle(part[1],true,true));
ShowerParticleVector theChildren;
theChildren.push_back(particle);
theChildren.push_back(otherChild);
//this updates the evolution scale
particle->showerKinematics()->
updateParent(newParent, theChildren,bb.type);
// update the history if needed
_currenttree->updateInitialStateShowerProduct(_progenitor,newParent);
_currenttree->addInitialStateBranching(particle,newParent,otherChild);
// for the reconstruction of kinematics, parent/child
// relationships are according to the branching process:
// now continue the shower
++_nis;
bool emitted = _limitEmissions==0 ?
spaceLikeShower(newParent,beam,type) : false;
if(newParent->spinInfo()) newParent->spinInfo()->develop();
// now reconstruct the momentum
if(!emitted) {
if(_intrinsic.find(_progenitor)==_intrinsic.end()) {
bb.kinematics->updateLast(newParent,ZERO,ZERO);
}
else {
pair<Energy,double> kt=_intrinsic[_progenitor];
bb.kinematics->updateLast(newParent,
kt.first*cos(kt.second),
kt.first*sin(kt.second));
}
}
particle->showerKinematics()->
updateChildren(newParent, theChildren,bb.type,false);
if(_limitEmissions!=0) {
if(particle->spinInfo()) particle->spinInfo()->develop();
return true;
}
// perform the shower of the final-state particle
timeLikeShower(otherChild,type,Branching(),true);
updateHistory(otherChild);
if(theChildren[1]->spinInfo()) theChildren[1]->spinInfo()->develop();
// return the emitted
if(particle->spinInfo()) particle->spinInfo()->develop();
return true;
}
void QTildeShowerHandler::showerDecay(ShowerTreePtr decay) {
// work out the type of event
currentTree()->xcombPtr(StdXCombPtr());
currentTree()->identifyEventType();
_decayme = HwDecayerBasePtr();
_hardme = HwMEBasePtr();
// find the decayer
// try the normal way if possible
tDMPtr dm = decay->incomingLines().begin()->first->original() ->decayMode();
if(!dm) dm = decay->incomingLines().begin()->first->copy() ->decayMode();
if(!dm) dm = decay->incomingLines().begin()->first->progenitor()->decayMode();
// otherwise make a string and look it up
if(!dm) {
string tag = decay->incomingLines().begin()->first->original()->dataPtr()->name()
+ "->";
OrderedParticles outgoing;
for(map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
it=decay->outgoingLines().begin();it!=decay->outgoingLines().end();++it) {
if(abs(decay->incomingLines().begin()->first->original()->id()) == ParticleID::t &&
abs(it->first->original()->id())==ParticleID::Wplus &&
decay->treelinks().size() == 1) {
ShowerTreePtr Wtree = decay->treelinks().begin()->first;
for(map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
it2=Wtree->outgoingLines().begin();it2!=Wtree->outgoingLines().end();++it2) {
outgoing.insert(it2->first->original()->dataPtr());
}
}
else {
outgoing.insert(it->first->original()->dataPtr());
}
}
for(OrderedParticles::const_iterator it=outgoing.begin(); it!=outgoing.end();++it) {
if(it!=outgoing.begin()) tag += ",";
tag +=(**it).name();
}
tag += ";";
dm = findDecayMode(tag);
}
if(dm) _decayme = dynamic_ptr_cast<HwDecayerBasePtr>(dm->decayer());
// set the ShowerTree to be showered
currentTree(decay);
decay->applyTransforms();
hardTree(HardTreePtr());
unsigned int interactionTry=0;
do {
try {
// generate the showering
doShowering(false,XCPtr());
// if no vetos
// force calculation of spin correlations
SpinPtr spInfo = decay->incomingLines().begin()->first->progenitor()->spinInfo();
if(spInfo) {
if(!spInfo->developed()) spInfo->needsUpdate();
spInfo->develop();
}
// and then return
return;
}
catch (InteractionVeto) {
currentTree()->clear();
++interactionTry;
}
}
while(interactionTry<=5);
throw Exception() << "Too many tries for QED shower in QTildeShowerHandler::showerDecay()"
<< Exception::eventerror;
}
bool QTildeShowerHandler::spaceLikeDecayShower(tShowerParticlePtr particle,
const ShowerParticle::EvolutionScales & maxScales,
Energy minmass,ShowerInteraction::Type type,
Branching fb) {
// too many tries
if(_nFSR>=_maxTryFSR) {
++_nFailedFSR;
// too many failed events
if(_nFailedFSR>=_maxFailFSR)
throw Exception() << "Too many events have failed due to too many shower emissions, in\n"
<< "QTildeShowerHandler::timeLikeShower(). Terminating run\n"
<< Exception::runerror;
throw Exception() << "Too many attempted emissions in QTildeShowerHandler::timeLikeShower()\n"
<< Exception::eventerror;
}
// generate the emission
ShowerParticleVector children;
int ntry=0;
// generate the emission
if(!fb.kinematics)
fb = selectSpaceLikeDecayBranching(particle,maxScales,minmass,type,
HardBranchingPtr());
// no emission, return
if(!fb.kinematics) return false;
Branching fc[2];
bool setupChildren = true;
while (ntry<50) {
if(particle->virtualMass()==ZERO)
particle->virtualMass(_progenitor->progenitor()->mass());
fc[0] = Branching();
fc[1] = Branching();
++ntry;
assert(fb.kinematics);
// has emitted
// Assign the shower kinematics to the emitting particle.
if(setupChildren) {
++_nFSR;
// Assign the shower kinematics to the emitting particle.
particle->showerKinematics(fb.kinematics);
if(fb.kinematics->pT()>progenitor()->highestpT())
progenitor()->highestpT(fb.kinematics->pT());
// create the ShowerParticle objects for the two children
children = createTimeLikeChildren(particle,fb.ids);
// updateChildren the children
particle->showerKinematics()->
updateChildren(particle, children, fb.type,_reconOpt>=3);
setupChildren = false;
}
// select branchings for children
fc[0] = selectSpaceLikeDecayBranching(children[0],maxScales,minmass,
type,HardBranchingPtr());
fc[1] = selectTimeLikeBranching (children[1],type,HardBranchingPtr());
// old default
if(_reconOpt==0) {
// shower the first particle
_currenttree->updateInitialStateShowerProduct(_progenitor,children[0]);
_currenttree->addInitialStateBranching(particle,children[0],children[1]);
if(fc[0].kinematics) spaceLikeDecayShower(children[0],maxScales,minmass,type,Branching());
// shower the second particle
if(fc[1].kinematics) timeLikeShower(children[1],type,fc[1],true);
updateHistory(children[1]);
// branching has happened
break;
}
// Herwig default
else if(_reconOpt==1) {
// shower the first particle
_currenttree->updateInitialStateShowerProduct(_progenitor,children[0]);
_currenttree->addInitialStateBranching(particle,children[0],children[1]);
if(fc[0].kinematics) spaceLikeDecayShower(children[0],maxScales,minmass,type,Branching());
// shower the second particle
if(fc[1].kinematics) timeLikeShower(children[1],type,fc[1],true);
updateHistory(children[1]);
// branching has happened
particle->showerKinematics()->updateParent(particle, children,fb.type);
// clean up the vetoed emission
if(particle->virtualMass()==ZERO) {
particle->showerKinematics(ShoKinPtr());
for(unsigned int ix=0;ix<children.size();++ix)
particle->abandonChild(children[ix]);
children.clear();
particle->vetoEmission(fb.type,fb.kinematics->scale());
// generate the new emission
fb = selectSpaceLikeDecayBranching(particle,maxScales,minmass,type,
HardBranchingPtr());
// no emission, return
if(!fb.kinematics) {
return false;
}
setupChildren = true;
continue;
}
else
break;
}
else if(_reconOpt>=2) {
// cut-off masses for the branching
const vector<Energy> & virtualMasses = fb.sudakov->virtualMasses(fb.ids);
// compute the masses of the children
Energy masses[3];
// space-like children
masses[1] = children[0]->virtualMass();
// time-like child
if(fc[1].kinematics) {
const vector<Energy> & vm = fc[1].sudakov->virtualMasses(fc[1].ids);
Energy2 q2 =
fc[1].kinematics->z()*(1.-fc[1].kinematics->z())*sqr(fc[1].kinematics->scale());
if(fc[1].ids[0]->id()!=ParticleID::g) q2 += sqr(vm[0]);
masses[2] = sqrt(q2);
}
else {
masses[2] = virtualMasses[2];
}
masses[0]=particle->virtualMass();
double z = fb.kinematics->z();
Energy2 pt2 = (1.-z)*(z*sqr(masses[0])-sqr(masses[1])-z/(1.-z)*sqr(masses[2]));
if(pt2>=ZERO) {
break;
}
else {
// reset the scales for the children
for(unsigned int ix=0;ix<2;++ix) {
if(fc[ix].kinematics)
children[ix]->vetoEmission(fc[ix].type,fc[ix].kinematics->scale());
else {
if(ix==0)
children[ix]->vetoEmission(ShowerPartnerType::QCDColourLine,Constants::MaxEnergy);
else
children[ix]->vetoEmission(ShowerPartnerType::QCDColourLine,ZERO);
}
}
children[0]->virtualMass(_progenitor->progenitor()->mass());
children[1]->virtualMass(ZERO);
}
}
};
if(_reconOpt>=2) {
// In the case of splittings which involves coloured particles,
// set properly the colour flow of the branching.
// update the history if needed
_currenttree->updateInitialStateShowerProduct(_progenitor,children[0]);
_currenttree->addInitialStateBranching(particle,children[0],children[1]);
// shower the first particle
if(fc[0].kinematics) spaceLikeDecayShower(children[0],maxScales,minmass,type,Branching());
// shower the second particle
if(fc[1].kinematics) timeLikeShower(children[1],type,fc[1],true);
updateHistory(children[1]);
// branching has happened
particle->showerKinematics()->updateParent(particle, children,fb.type);
}
// branching has happened
return true;
}
vector<ShowerProgenitorPtr> QTildeShowerHandler::setupShower(bool hard) {
// generate POWHEG hard emission if needed
if(_hardEmissionMode>0) hardestEmission(hard);
ShowerInteraction::Type inter = interaction_;
if(_hardtree&&inter!=ShowerInteraction::Both) {
inter = _hardtree->interaction();
}
// set the initial colour partners
setEvolutionPartners(hard,interaction_,false);
// generate hard me if needed
if(_hardEmissionMode==0 ||
(!hard && _hardEmissionMode==-1)) hardMatrixElementCorrection(hard);
// get the particles to be showered
vector<ShowerProgenitorPtr> particlesToShower =
currentTree()->extractProgenitors();
// remake the colour partners if needed
if(_currenttree->hardMatrixElementCorrection()) {
setEvolutionPartners(hard,interaction_,true);
_currenttree->resetShowerProducts();
}
// return the answer
return particlesToShower;
}
void QTildeShowerHandler::setEvolutionPartners(bool hard,ShowerInteraction::Type type,
bool clear) {
// match the particles in the ShowerTree and hardTree
if(hardTree() && !hardTree()->connect(currentTree()))
throw Exception() << "Can't match trees in "
<< "QTildeShowerHandler::setEvolutionPartners()"
<< Exception::eventerror;
// extract the progenitors
vector<ShowerParticlePtr> particles =
currentTree()->extractProgenitorParticles();
// clear the partners if needed
if(clear) {
for(unsigned int ix=0;ix<particles.size();++ix) {
particles[ix]->partner(ShowerParticlePtr());
particles[ix]->clearPartners();
}
}
// sort out the colour partners
if(hardTree()) {
// find the partner
for(unsigned int ix=0;ix<particles.size();++ix) {
tHardBranchingPtr partner =
hardTree()->particles()[particles[ix]]->colourPartner();
if(!partner) continue;
for(map<ShowerParticlePtr,tHardBranchingPtr>::const_iterator
it=hardTree()->particles().begin();
it!=hardTree()->particles().end();++it) {
if(it->second==partner) particles[ix]->partner(it->first);
}
if(!particles[ix]->partner())
throw Exception() << "Can't match partners in "
<< "QTildeShowerHandler::setEvolutionPartners()"
<< Exception::eventerror;
}
}
// Set the initial evolution scales
showerModel()->partnerFinder()->
setInitialEvolutionScales(particles,!hard,type,!_hardtree);
if(hardTree() && _hardPOWHEG) {
bool tooHard=false;
map<ShowerParticlePtr,tHardBranchingPtr>::const_iterator
eit=hardTree()->particles().end();
for(unsigned int ix=0;ix<particles.size();++ix) {
map<ShowerParticlePtr,tHardBranchingPtr>::const_iterator
mit = hardTree()->particles().find(particles[ix]);
Energy hardScale(ZERO);
ShowerPartnerType::Type type(ShowerPartnerType::Undefined);
// final-state
if(particles[ix]->isFinalState()) {
if(mit!= eit && !mit->second->children().empty()) {
hardScale = mit->second->scale();
type = mit->second->type();
}
}
// initial-state
else {
if(mit!= eit && mit->second->parent()) {
hardScale = mit->second->parent()->scale();
type = mit->second->parent()->type();
}
}
if(type!=ShowerPartnerType::Undefined) {
if(type==ShowerPartnerType::QED) {
tooHard |= particles[ix]->scales().QED_noAO<hardScale;
}
else if(type==ShowerPartnerType::QCDColourLine) {
tooHard |= particles[ix]->scales().QCD_c_noAO<hardScale;
}
else if(type==ShowerPartnerType::QCDAntiColourLine) {
tooHard |= particles[ix]->scales().QCD_ac_noAO<hardScale;
}
}
}
if(tooHard) convertHardTree(hard,type);
}
}
void QTildeShowerHandler::updateHistory(tShowerParticlePtr particle) {
if(!particle->children().empty()) {
ShowerParticleVector theChildren;
for(unsigned int ix=0;ix<particle->children().size();++ix) {
ShowerParticlePtr part = dynamic_ptr_cast<ShowerParticlePtr>
(particle->children()[ix]);
theChildren.push_back(part);
}
// update the history if needed
if(particle==_currenttree->getFinalStateShowerProduct(_progenitor))
_currenttree->updateFinalStateShowerProduct(_progenitor,
particle,theChildren);
_currenttree->addFinalStateBranching(particle,theChildren);
for(unsigned int ix=0;ix<theChildren.size();++ix)
updateHistory(theChildren[ix]);
}
}
bool QTildeShowerHandler::startTimeLikeShower(ShowerInteraction::Type type) {
_nFSR = 0;
// initialize basis vectors etc
progenitor()->progenitor()->initializeFinalState();
+ if(!progenitor()->progenitor()->partner()) return false;
if(hardTree()) {
map<ShowerParticlePtr,tHardBranchingPtr>::const_iterator
eit=hardTree()->particles().end(),
mit = hardTree()->particles().find(progenitor()->progenitor());
if( mit != eit && !mit->second->children().empty() ) {
bool output=truncatedTimeLikeShower(progenitor()->progenitor(),
mit->second ,type,Branching(),true);
if(output) updateHistory(progenitor()->progenitor());
return output;
}
}
// do the shower
bool output = hardOnly() ? false :
timeLikeShower(progenitor()->progenitor() ,type,Branching(),true) ;
if(output) updateHistory(progenitor()->progenitor());
return output;
}
bool QTildeShowerHandler::startSpaceLikeShower(PPtr parent, ShowerInteraction::Type type) {
// initialise the basis vectors
progenitor()->progenitor()->initializeInitialState(parent);
+ if(!progenitor()->progenitor()->partner()) return false;
if(hardTree()) {
map<ShowerParticlePtr,tHardBranchingPtr>::const_iterator
eit =hardTree()->particles().end(),
mit = hardTree()->particles().find(progenitor()->progenitor());
if( mit != eit && mit->second->parent() ) {
return truncatedSpaceLikeShower( progenitor()->progenitor(),
parent, mit->second->parent(), type );
}
}
// perform the shower
return hardOnly() ? false :
spaceLikeShower(progenitor()->progenitor(),parent,type);
}
bool QTildeShowerHandler::
startSpaceLikeDecayShower(const ShowerParticle::EvolutionScales & maxScales,
Energy minimumMass,ShowerInteraction::Type type) {
_nFSR = 0;
// set up the particle basis vectors
progenitor()->progenitor()->initializeDecay();
+ if(!progenitor()->progenitor()->partner()) return false;
if(hardTree()) {
map<ShowerParticlePtr,tHardBranchingPtr>::const_iterator
eit =hardTree()->particles().end(),
mit = hardTree()->particles().find(progenitor()->progenitor());
if( mit != eit && mit->second->parent() ) {
HardBranchingPtr branch=mit->second;
while(branch->parent()) branch=branch->parent();
return truncatedSpaceLikeDecayShower(progenitor()->progenitor(),maxScales,
minimumMass, branch ,type, Branching());
}
}
// perform the shower
return hardOnly() ? false :
spaceLikeDecayShower(progenitor()->progenitor(),maxScales,minimumMass,type,Branching());
}
bool QTildeShowerHandler::timeLikeVetoed(const Branching & fb,
ShowerParticlePtr particle) {
// work out type of interaction
ShowerInteraction::Type type = convertInteraction(fb.type);
// check whether emission was harder than largest pt of hard subprocess
if ( restrictPhasespace() && fb.kinematics->pT() > _progenitor->maxHardPt() )
return true;
// soft matrix element correction veto
if( softMEC()) {
if(_hardme && _hardme->hasMECorrection()) {
if(_hardme->softMatrixElementVeto(_progenitor,particle,fb))
return true;
}
else if(_decayme && _decayme->hasMECorrection()) {
if(_decayme->softMatrixElementVeto(_progenitor,particle,fb))
return true;
}
}
// veto on maximum pt
if(fb.kinematics->pT()>_progenitor->maximumpT(type)) return true;
// general vetos
if (fb.kinematics && !_vetoes.empty()) {
bool vetoed=false;
for (vector<ShowerVetoPtr>::iterator v = _vetoes.begin();
v != _vetoes.end(); ++v) {
bool test = (**v).vetoTimeLike(_progenitor,particle,fb);
switch((**v).vetoType()) {
case ShowerVeto::Emission:
vetoed |= test;
break;
case ShowerVeto::Shower:
if(test) throw VetoShower();
break;
case ShowerVeto::Event:
if(test) throw Veto();
break;
}
}
if(vetoed) return true;
}
if ( firstInteraction() &&
profileScales() ) {
double weight =
profileScales()->
hardScaleProfile(_progenitor->hardScale(),fb.kinematics->pT());
if ( UseRandom::rnd() > weight )
return true;
}
return false;
}
bool QTildeShowerHandler::spaceLikeVetoed(const Branching & bb,
ShowerParticlePtr particle) {
// work out type of interaction
ShowerInteraction::Type type = convertInteraction(bb.type);
// check whether emission was harder than largest pt of hard subprocess
if (restrictPhasespace() && bb.kinematics->pT() > _progenitor->maxHardPt())
return true;
// apply the soft correction
if( softMEC() && _hardme && _hardme->hasMECorrection() ) {
if(_hardme->softMatrixElementVeto(_progenitor,particle,bb))
return true;
}
// the more general vetos
// check vs max pt for the shower
if(bb.kinematics->pT()>_progenitor->maximumpT(type)) return true;
if (!_vetoes.empty()) {
bool vetoed=false;
for (vector<ShowerVetoPtr>::iterator v = _vetoes.begin();
v != _vetoes.end(); ++v) {
bool test = (**v).vetoSpaceLike(_progenitor,particle,bb);
switch ((**v).vetoType()) {
case ShowerVeto::Emission:
vetoed |= test;
break;
case ShowerVeto::Shower:
if(test) throw VetoShower();
break;
case ShowerVeto::Event:
if(test) throw Veto();
break;
}
}
if (vetoed) return true;
}
if ( firstInteraction() &&
profileScales() ) {
double weight =
profileScales()->
hardScaleProfile(_progenitor->hardScale(),bb.kinematics->pT());
if ( UseRandom::rnd() > weight )
return true;
}
return false;
}
bool QTildeShowerHandler::spaceLikeDecayVetoed( const Branching & fb,
ShowerParticlePtr particle) {
// work out type of interaction
ShowerInteraction::Type type = convertInteraction(fb.type);
// apply the soft correction
if( softMEC() && _decayme && _decayme->hasMECorrection() ) {
if(_decayme->softMatrixElementVeto(_progenitor,particle,fb))
return true;
}
// veto on hardest pt in the shower
if(fb.kinematics->pT()> _progenitor->maximumpT(type)) return true;
// general vetos
if (!_vetoes.empty()) {
bool vetoed=false;
for (vector<ShowerVetoPtr>::iterator v = _vetoes.begin();
v != _vetoes.end(); ++v) {
bool test = (**v).vetoSpaceLike(_progenitor,particle,fb);
switch((**v).vetoType()) {
case ShowerVeto::Emission:
vetoed |= test;
break;
case ShowerVeto::Shower:
if(test) throw VetoShower();
break;
case ShowerVeto::Event:
if(test) throw Veto();
break;
}
if (vetoed) return true;
}
}
return false;
}
void QTildeShowerHandler::hardestEmission(bool hard) {
HardTreePtr ISRTree;
if( ( _hardme && _hardme->hasPOWHEGCorrection()!=0 && _hardEmissionMode< 2) ||
( _decayme && _decayme->hasPOWHEGCorrection()!=0 && _hardEmissionMode!=2) ) {
if(_hardme) {
assert(hard);
_hardtree = _hardme->generateHardest( currentTree(),interaction_);
}
else {
assert(!hard);
_hardtree = _decayme->generateHardest( currentTree() );
}
// store initial state POWHEG radiation
if(_hardtree && _hardme && _hardme->hasPOWHEGCorrection()==1)
ISRTree=_hardtree;
}
else if (_hardEmissionMode>1 && hard) {
// Get minimum pT cutoff used in shower approximation
Energy maxpt = 1.*GeV;
int colouredIn = 0;
int colouredOut = 0;
for( map< ShowerProgenitorPtr, tShowerParticlePtr >::iterator it
= currentTree()->outgoingLines().begin();
it != currentTree()->outgoingLines().end(); ++it ) {
if( it->second->coloured() ) colouredOut+=1;
}
for( map< ShowerProgenitorPtr, ShowerParticlePtr >::iterator it
= currentTree()->incomingLines().begin();
it != currentTree()->incomingLines().end(); ++it ) {
if( ! it->second->coloured() ) colouredIn+=1;
}
if ( currentTree()->showerApproximation() ){
if ( currentTree()->showerApproximation()->ffPtCut() == currentTree()->showerApproximation()->fiPtCut() &&
currentTree()->showerApproximation()->ffPtCut() == currentTree()->showerApproximation()->iiPtCut() )
maxpt = currentTree()->showerApproximation()->ffPtCut();
else if ( colouredIn == 2 && colouredOut == 0 )
maxpt = currentTree()->showerApproximation()->iiPtCut();
else if ( colouredIn == 0 && colouredOut > 1 )
maxpt = currentTree()->showerApproximation()->ffPtCut();
else if ( colouredIn == 2 && colouredOut == 1 )
maxpt = min(currentTree()->showerApproximation()->iiPtCut(), currentTree()->showerApproximation()->fiPtCut());
else if ( colouredIn == 1 && colouredOut > 1 )
maxpt = min(currentTree()->showerApproximation()->ffPtCut(), currentTree()->showerApproximation()->fiPtCut());
else
maxpt = min(min(currentTree()->showerApproximation()->iiPtCut(), currentTree()->showerApproximation()->fiPtCut()),
currentTree()->showerApproximation()->ffPtCut());
}
// Generate hardtree from born and real emission subprocesses
_hardtree = generateCKKW(currentTree());
// Find transverse momentum of hardest emission
if (_hardtree){
for(set<HardBranchingPtr>::iterator it=_hardtree->branchings().begin();
it!=_hardtree->branchings().end();++it) {
if ((*it)->parent() && (*it)->status()==HardBranching::Incoming)
maxpt=(*it)->branchingParticle()->momentum().perp();
if ((*it)->children().size()==2 && (*it)->status()==HardBranching::Outgoing){
if ((*it)->branchingParticle()->id()!=21 &&
abs((*it)->branchingParticle()->id())>5 ){
if ((*it)->children()[0]->branchingParticle()->id()==21 ||
abs((*it)->children()[0]->branchingParticle()->id())<6)
maxpt=(*it)->children()[0]->branchingParticle()->momentum().perp();
else if ((*it)->children()[1]->branchingParticle()->id()==21 ||
abs((*it)->children()[1]->branchingParticle()->id())<6)
maxpt=(*it)->children()[1]->branchingParticle()->momentum().perp();
}
else {
if ( abs((*it)->branchingParticle()->id())<6){
if (abs((*it)->children()[0]->branchingParticle()->id())<6)
maxpt = (*it)->children()[1]->branchingParticle()->momentum().perp();
else
maxpt = (*it)->children()[0]->branchingParticle()->momentum().perp();
}
else maxpt = (*it)->children()[1]->branchingParticle()->momentum().perp();
}
}
}
}
// Hardest (pt) emission should be the first powheg emission.
maxpt=min(sqrt(lastXCombPtr()->lastShowerScale()),maxpt);
// Set maxpt to pT of emission when showering POWHEG real-emission subprocesses
if (!currentTree()->isPowhegSEvent() && !currentTree()->isPowhegHEvent()){
vector<int> outGluon;
vector<int> outQuark;
map< ShowerProgenitorPtr, tShowerParticlePtr >::iterator it;
for( it = currentTree()->outgoingLines().begin();
it != currentTree()->outgoingLines().end(); ++it ) {
if ( abs(it->second->id())< 6) outQuark.push_back(it->second->id());
if ( it->second->id()==21 ) outGluon.push_back(it->second->id());
}
if (outGluon.size() + outQuark.size() == 1){
for( it = currentTree()->outgoingLines().begin();
it != currentTree()->outgoingLines().end(); ++it ) {
if ( abs(it->second->id())< 6 || it->second->id()==21 )
maxpt = it->second->momentum().perp();
}
}
else if (outGluon.size() + outQuark.size() > 1){
// assume qqbar pair from a Z/gamma
if (outGluon.size()==1 && outQuark.size() == 2 && outQuark[0]==-outQuark[1]){
for( it = currentTree()->outgoingLines().begin();
it != currentTree()->outgoingLines().end(); ++it ) {
if ( it->second->id()==21 )
maxpt = it->second->momentum().perp();
}
}
// otherwise take the lowest pT avoiding born DY events
else {
maxpt = generator()->maximumCMEnergy();
for( it = currentTree()->outgoingLines().begin();
it != currentTree()->outgoingLines().end(); ++it ) {
if ( abs(it->second->id())< 6 || it->second->id()==21 )
maxpt = min(maxpt,it->second->momentum().perp());
}
}
}
}
// set maximum pT for subsequent emissions from S events
if ( currentTree()->isPowhegSEvent() || (!currentTree()->isPowhegSEvent() && !currentTree()->isPowhegHEvent())){
for( map< ShowerProgenitorPtr, tShowerParticlePtr >::iterator it
= currentTree()->outgoingLines().begin();
it != currentTree()->outgoingLines().end(); ++it ) {
if( ! it->second->coloured() ) continue;
it->first->maximumpT(maxpt, ShowerInteraction::QCD );
}
for( map< ShowerProgenitorPtr, ShowerParticlePtr >::iterator it
= currentTree()->incomingLines().begin();
it != currentTree()->incomingLines().end(); ++it ) {
if( ! it->second->coloured() ) continue;
it->first->maximumpT(maxpt, ShowerInteraction::QCD );
}
}
}
else
_hardtree = generateCKKW(currentTree());
// if hard me doesn't have a FSR powheg
// correction use decay powheg correction
if (_hardme && _hardme->hasPOWHEGCorrection()<2) {
// check for intermediate colour singlet resonance
const ParticleVector inter = _hardme->subProcess()->intermediates();
if (inter.size()!=1 ||
inter[0]->momentum().m2()/GeV2 < 0 ||
inter[0]->dataPtr()->iColour()!=PDT::Colour0){
if(_hardtree) connectTrees(currentTree(),_hardtree,hard);
return;
}
map<ShowerProgenitorPtr, tShowerParticlePtr > out = currentTree()->outgoingLines();
// ignore cases where outgoing particles are not coloured
if (out.size()!=2 ||
out. begin()->second->dataPtr()->iColour()==PDT::Colour0 ||
out.rbegin()->second->dataPtr()->iColour()==PDT::Colour0) {
if(_hardtree) connectTrees(currentTree(),_hardtree,hard);
return;
}
// look up decay mode
tDMPtr dm;
string tag;
string inParticle = inter[0]->dataPtr()->name() + "->";
vector<string> outParticles;
outParticles.push_back(out.begin ()->first->progenitor()->dataPtr()->name());
outParticles.push_back(out.rbegin()->first->progenitor()->dataPtr()->name());
for (int it=0; it<2; ++it){
tag = inParticle + outParticles[it] + "," + outParticles[(it+1)%2] + ";";
dm = generator()->findDecayMode(tag);
if(dm) break;
}
// get the decayer
HwDecayerBasePtr decayer;
if(dm) decayer = dynamic_ptr_cast<HwDecayerBasePtr>(dm->decayer());
// check if decayer has a FSR POWHEG correction
if (!decayer || decayer->hasPOWHEGCorrection()<2){
if(_hardtree) connectTrees(currentTree(),_hardtree,hard);
return;
}
// generate the hardest emission
ShowerDecayMap decay;
PPtr in = new_ptr(*inter[0]);
PerturbativeProcessPtr newProcess(new_ptr(PerturbativeProcess()));
newProcess->incoming().push_back(make_pair(in,PerturbativeProcessPtr()));
ShowerTreePtr decayTree = new_ptr(ShowerTree(newProcess));
HardTreePtr FSRTree = decayer->generateHardest(decayTree);
if (!FSRTree) {
if(_hardtree) connectTrees(currentTree(),_hardtree,hard);
return;
}
// if there is no ISRTree make _hardtree from FSRTree
if (!ISRTree){
vector<HardBranchingPtr> inBranch,hardBranch;
for(map<ShowerProgenitorPtr,ShowerParticlePtr>::const_iterator
cit =currentTree()->incomingLines().begin();
cit!=currentTree()->incomingLines().end();++cit ) {
inBranch.push_back(new_ptr(HardBranching(cit->second,SudakovPtr(),
HardBranchingPtr(),
HardBranching::Incoming)));
inBranch.back()->beam(cit->first->original()->parents()[0]);
hardBranch.push_back(inBranch.back());
}
if(inBranch[0]->branchingParticle()->dataPtr()->coloured()) {
inBranch[0]->colourPartner(inBranch[1]);
inBranch[1]->colourPartner(inBranch[0]);
}
for(set<HardBranchingPtr>::iterator it=FSRTree->branchings().begin();
it!=FSRTree->branchings().end();++it) {
if((**it).branchingParticle()->id()!=in->id())
hardBranch.push_back(*it);
}
hardBranch[2]->colourPartner(hardBranch[3]);
hardBranch[3]->colourPartner(hardBranch[2]);
HardTreePtr newTree = new_ptr(HardTree(hardBranch,inBranch,
ShowerInteraction::QCD));
_hardtree = newTree;
}
// Otherwise modify the ISRTree to include the emission in FSRTree
else {
vector<tShowerParticlePtr> FSROut, ISROut;
set<HardBranchingPtr>::iterator itFSR, itISR;
// get outgoing particles
for(itFSR =FSRTree->branchings().begin();
itFSR!=FSRTree->branchings().end();++itFSR){
if ((**itFSR).status()==HardBranching::Outgoing)
FSROut.push_back((*itFSR)->branchingParticle());
}
for(itISR =ISRTree->branchings().begin();
itISR!=ISRTree->branchings().end();++itISR){
if ((**itISR).status()==HardBranching::Outgoing)
ISROut.push_back((*itISR)->branchingParticle());
}
// find COM frame formed by outgoing particles
LorentzRotation eventFrameFSR, eventFrameISR;
eventFrameFSR = ((FSROut[0]->momentum()+FSROut[1]->momentum()).findBoostToCM());
eventFrameISR = ((ISROut[0]->momentum()+ISROut[1]->momentum()).findBoostToCM());
// find rotation between ISR and FSR frames
int j=0;
if (ISROut[0]->id()!=FSROut[0]->id()) j=1;
eventFrameISR.rotateZ( (eventFrameFSR*FSROut[0]->momentum()).phi()-
(eventFrameISR*ISROut[j]->momentum()).phi() );
eventFrameISR.rotateY( (eventFrameFSR*FSROut[0]->momentum()).theta()-
(eventFrameISR*ISROut[j]->momentum()).theta() );
eventFrameISR.invert();
for (itFSR=FSRTree->branchings().begin();
itFSR!=FSRTree->branchings().end();++itFSR){
if ((**itFSR).branchingParticle()->id()==in->id()) continue;
for (itISR =ISRTree->branchings().begin();
itISR!=ISRTree->branchings().end();++itISR){
if ((**itISR).status()==HardBranching::Incoming) continue;
if ((**itFSR).branchingParticle()->id()==
(**itISR).branchingParticle()->id()){
// rotate FSRTree particle to ISRTree event frame
(**itISR).branchingParticle()->setMomentum(eventFrameISR*
eventFrameFSR*
(**itFSR).branchingParticle()->momentum());
(**itISR).branchingParticle()->rescaleMass();
// add the children of the FSRTree particles to the ISRTree
if(!(**itFSR).children().empty()){
(**itISR).addChild((**itFSR).children()[0]);
(**itISR).addChild((**itFSR).children()[1]);
// rotate momenta to ISRTree event frame
(**itISR).children()[0]->branchingParticle()->setMomentum(eventFrameISR*
eventFrameFSR*
(**itFSR).children()[0]->branchingParticle()->momentum());
(**itISR).children()[1]->branchingParticle()->setMomentum(eventFrameISR*
eventFrameFSR*
(**itFSR).children()[1]->branchingParticle()->momentum());
}
}
}
}
_hardtree = ISRTree;
}
}
if(_hardtree){
connectTrees(currentTree(),_hardtree,hard);
}
}
bool QTildeShowerHandler::truncatedTimeLikeShower(tShowerParticlePtr particle,
HardBranchingPtr branch,
ShowerInteraction::Type type,
Branching fb, bool first) {
// select a branching if we don't have one
if(!fb.kinematics)
fb = selectTimeLikeBranching(particle,type,branch);
// must be an emission, the forced one it not a truncated one
assert(fb.kinematics);
ShowerParticleVector children;
int ntry=0;
Branching fc[2];
bool setupChildren = true;
while (ntry<50) {
if(!fc[0].hard) fc[0] = Branching();
if(!fc[1].hard) fc[1] = Branching();
++ntry;
// Assign the shower kinematics to the emitting particle.
if(setupChildren) {
++_nFSR;
// Assign the shower kinematics to the emitting particle.
particle->showerKinematics(fb.kinematics);
if(fb.kinematics->pT()>progenitor()->highestpT())
progenitor()->highestpT(fb.kinematics->pT());
// create the children
children = createTimeLikeChildren(particle,fb.ids);
// update the children
particle->showerKinematics()->
updateChildren(particle, children,fb.type,_reconOpt>=3);
setupChildren = false;
}
// select branchings for children
if(!fc[0].kinematics) {
// select branching for first particle
if(!fb.hard && fb.iout ==1 )
fc[0] = selectTimeLikeBranching(children[0],type,branch);
else if(fb.hard && !branch->children()[0]->children().empty() )
fc[0] = selectTimeLikeBranching(children[0],type,branch->children()[0]);
else
fc[0] = selectTimeLikeBranching(children[0],type,HardBranchingPtr());
}
// select branching for the second particle
if(!fc[1].kinematics) {
// select branching for first particle
if(!fb.hard && fb.iout ==2 )
fc[1] = selectTimeLikeBranching(children[1],type,branch);
else if(fb.hard && !branch->children()[1]->children().empty() )
fc[1] = selectTimeLikeBranching(children[1],type,branch->children()[1]);
else
fc[1] = selectTimeLikeBranching(children[1],type,HardBranchingPtr());
}
// old default
if(_reconOpt==0 || (_reconOpt==1 && fb.hard) ) {
// shower the first particle
if(fc[0].kinematics) {
// the parent has truncated emission and following line
if(!fb.hard && fb.iout == 1)
truncatedTimeLikeShower(children[0],branch,type,fc[0],false);
// hard emission and subsquent hard emissions
else if(fb.hard && !branch->children()[0]->children().empty() )
truncatedTimeLikeShower(children[0],branch->children()[0],type,fc[0],false);
// normal shower
else
timeLikeShower(children[0],type,fc[0],false);
}
if(children[0]->spinInfo()) children[0]->spinInfo()->develop();
// shower the second particle
if(fc[1].kinematics) {
// the parent has truncated emission and following line
if(!fb.hard && fb.iout == 2)
truncatedTimeLikeShower(children[1],branch,type,fc[1],false);
// hard emission and subsquent hard emissions
else if(fb.hard && !branch->children()[1]->children().empty() )
truncatedTimeLikeShower(children[1],branch->children()[1],type,fc[1],false);
else
timeLikeShower(children[1],type,fc[1],false);
}
if(children[1]->spinInfo()) children[1]->spinInfo()->develop();
// branching has happened
particle->showerKinematics()->updateParent(particle, children,fb.type);
break;
}
// H7 default
else if(_reconOpt==1) {
// shower the first particle
if(fc[0].kinematics) {
// the parent has truncated emission and following line
if(!fb.hard && fb.iout == 1)
truncatedTimeLikeShower(children[0],branch,type,fc[0],false);
else
timeLikeShower(children[0],type,fc[0],false);
}
if(children[0]->spinInfo()) children[0]->spinInfo()->develop();
// shower the second particle
if(fc[1].kinematics) {
// the parent has truncated emission and following line
if(!fb.hard && fb.iout == 2)
truncatedTimeLikeShower(children[1],branch,type,fc[1],false);
else
timeLikeShower(children[1],type,fc[1],false);
}
if(children[1]->spinInfo()) children[1]->spinInfo()->develop();
// branching has happened
particle->showerKinematics()->updateParent(particle, children,fb.type);
// clean up the vetoed emission
if(particle->virtualMass()==ZERO) {
particle->showerKinematics(ShoKinPtr());
for(unsigned int ix=0;ix<children.size();++ix)
particle->abandonChild(children[ix]);
children.clear();
if(particle->spinInfo()) particle->spinInfo()->decayVertex(VertexPtr());
particle->vetoEmission(fb.type,fb.kinematics->scale());
// generate the new emission
fb = selectTimeLikeBranching(particle,type,branch);
// must be at least hard emission
assert(fb.kinematics);
setupChildren = true;
continue;
}
else
break;
}
else if(_reconOpt>=2) {
// cut-off masses for the branching
const vector<Energy> & virtualMasses = fb.sudakov->virtualMasses(fb.ids);
// compute the masses of the children
Energy masses[3];
for(unsigned int ix=0;ix<2;++ix) {
if(fc[ix].kinematics) {
const vector<Energy> & vm = fc[ix].sudakov->virtualMasses(fc[ix].ids);
Energy2 q2 =
fc[ix].kinematics->z()*(1.-fc[ix].kinematics->z())*sqr(fc[ix].kinematics->scale());
if(fc[ix].ids[0]->id()!=ParticleID::g) q2 += sqr(vm[0]);
masses[ix+1] = sqrt(q2);
}
else {
masses[ix+1] = virtualMasses[ix+1];
}
}
masses[0] = fb.ids[0]->id()!=ParticleID::g ? virtualMasses[0] : ZERO;
double z = fb.kinematics->z();
Energy2 pt2 = z*(1.-z)*(z*(1.-z)*sqr(fb.kinematics->scale()) + sqr(masses[0]))
- sqr(masses[1])*(1.-z) - sqr(masses[2])*z;
if(pt2>=ZERO) {
break;
}
// if only the hard emission have to accept it
else if ((fc[0].hard && !fc[1].kinematics) ||
(fc[1].hard && !fc[0].kinematics) ) {
break;
}
else {
// reset the scales for the children
for(unsigned int ix=0;ix<2;++ix) {
if(fc[ix].hard) continue;
if(fc[ix].kinematics && ! fc[ix].hard )
children[ix]->vetoEmission(fc[ix].type,fc[ix].kinematics->scale());
else
children[ix]->vetoEmission(ShowerPartnerType::QCDColourLine,ZERO);
children[ix]->virtualMass(ZERO);
}
}
}
};
if(_reconOpt>=2) {
// shower the first particle
if(fc[0].kinematics) {
// the parent has truncated emission and following line
if(!fb.hard && fb.iout == 1)
truncatedTimeLikeShower(children[0],branch,type,fc[0],false);
// hard emission and subsquent hard emissions
else if(fb.hard && !branch->children()[0]->children().empty() )
truncatedTimeLikeShower(children[0],branch->children()[0],type,fc[0],false);
// normal shower
else
timeLikeShower(children[0],type,fc[0],false);
}
if(children[0]->spinInfo()) children[0]->spinInfo()->develop();
// shower the second particle
if(fc[1].kinematics) {
// the parent has truncated emission and following line
if(!fb.hard && fb.iout == 2)
truncatedTimeLikeShower(children[1],branch,type,fc[1],false);
// hard emission and subsquent hard emissions
else if(fb.hard && !branch->children()[1]->children().empty() )
truncatedTimeLikeShower(children[1],branch->children()[1],type,fc[1],false);
else
timeLikeShower(children[1],type,fc[1],false);
}
if(children[1]->spinInfo()) children[1]->spinInfo()->develop();
// branching has happened
particle->showerKinematics()->updateParent(particle, children,fb.type);
}
if(first&&!children.empty())
particle->showerKinematics()->resetChildren(particle,children);
if(particle->spinInfo()) particle->spinInfo()->develop();
return true;
}
bool QTildeShowerHandler::truncatedSpaceLikeShower(tShowerParticlePtr particle, PPtr beam,
HardBranchingPtr branch,
ShowerInteraction::Type type) {
tcPDFPtr pdf;
if(firstPDF().particle() == beamParticle())
pdf = firstPDF().pdf();
if(secondPDF().particle() == beamParticle())
pdf = secondPDF().pdf();
Energy freeze = pdfFreezingScale();
Branching bb;
// parameters of the force branching
double z(0.);
HardBranchingPtr timelike;
for( unsigned int ix = 0; ix < branch->children().size(); ++ix ) {
if( branch->children()[ix]->status() ==HardBranching::Outgoing) {
timelike = branch->children()[ix];
}
if( branch->children()[ix]->status() ==HardBranching::Incoming )
z = branch->children()[ix]->z();
}
// generate truncated branching
tcPDPtr part[2];
if(z>=0.&&z<=1.) {
while (true) {
if( !isTruncatedShowerON() || hardOnly() ) break;
bb = splittingGenerator()->chooseBackwardBranching( *particle,
beam, 1., beamParticle(),
type , pdf,freeze);
if( !bb.kinematics || bb.kinematics->scale() < branch->scale() ) {
bb = Branching();
break;
}
// particles as in Sudakov form factor
part[0] = bb.ids[0];
part[1] = bb.ids[2];
double zsplit = bb.kinematics->z();
// apply the vetos for the truncated shower
// if doesn't carry most of momentum
ShowerInteraction::Type type2 = convertInteraction(bb.type);
if(type2==branch->sudakov()->interactionType() &&
zsplit < 0.5) {
particle->vetoEmission(bb.type,bb.kinematics->scale());
continue;
}
// others
if( part[0]->id() != particle->id() || // if particle changes type
bb.kinematics->pT() > progenitor()->maximumpT(type2) || // pt veto
bb.kinematics->scale() < branch->scale()) { // angular ordering veto
particle->vetoEmission(bb.type,bb.kinematics->scale());
continue;
}
// and those from the base class
if(spaceLikeVetoed(bb,particle)) {
particle->vetoEmission(bb.type,bb.kinematics->scale());
continue;
}
break;
}
}
if( !bb.kinematics ) {
//do the hard emission
ShoKinPtr kinematics =
branch->sudakov()->createInitialStateBranching( branch->scale(), z, branch->phi(),
branch->children()[0]->pT() );
// assign the splitting function and shower kinematics
particle->showerKinematics( kinematics );
if(kinematics->pT()>progenitor()->highestpT())
progenitor()->highestpT(kinematics->pT());
// For the time being we are considering only 1->2 branching
// Now create the actual particles, make the otherChild a final state
// particle, while the newParent is not
ShowerParticlePtr newParent =
new_ptr( ShowerParticle( branch->branchingParticle()->dataPtr(), false ) );
ShowerParticlePtr otherChild =
new_ptr( ShowerParticle( timelike->branchingParticle()->dataPtr(),
true, true ) );
ShowerParticleVector theChildren;
theChildren.push_back( particle );
theChildren.push_back( otherChild );
particle->showerKinematics()->
updateParent( newParent, theChildren, branch->type());
// update the history if needed
currentTree()->updateInitialStateShowerProduct( progenitor(), newParent );
currentTree()->addInitialStateBranching( particle, newParent, otherChild );
// for the reconstruction of kinematics, parent/child
// relationships are according to the branching process:
// now continue the shower
bool emitted=false;
if(!hardOnly()) {
if( branch->parent() ) {
emitted = truncatedSpaceLikeShower( newParent, beam, branch->parent() , type);
}
else {
emitted = spaceLikeShower( newParent, beam , type);
}
}
if( !emitted ) {
if( intrinsicpT().find( progenitor() ) == intrinsicpT().end() ) {
kinematics->updateLast( newParent, ZERO, ZERO );
}
else {
pair<Energy,double> kt = intrinsicpT()[progenitor()];
kinematics->updateLast( newParent,
kt.first*cos( kt.second ),
kt.first*sin( kt.second ) );
}
}
particle->showerKinematics()->
updateChildren( newParent, theChildren,bb.type,false);
if(hardOnly()) return true;
// perform the shower of the final-state particle
if( timelike->children().empty() ) {
timeLikeShower( otherChild , type,Branching(),true);
}
else {
truncatedTimeLikeShower( otherChild, timelike , type,Branching(), true);
}
updateHistory(otherChild);
// return the emitted
return true;
}
// assign the splitting function and shower kinematics
particle->showerKinematics( bb.kinematics );
if(bb.kinematics->pT()>progenitor()->highestpT())
progenitor()->highestpT(bb.kinematics->pT());
// For the time being we are considering only 1->2 branching
// Now create the actual particles, make the otherChild a final state
// particle, while the newParent is not
ShowerParticlePtr newParent = new_ptr( ShowerParticle( part[0], false ) );
ShowerParticlePtr otherChild = new_ptr( ShowerParticle( part[1], true, true ) );
ShowerParticleVector theChildren;
theChildren.push_back( particle );
theChildren.push_back( otherChild );
particle->showerKinematics()->
updateParent( newParent, theChildren, bb.type);
// update the history if needed
currentTree()->updateInitialStateShowerProduct( progenitor(), newParent );
currentTree()->addInitialStateBranching( particle, newParent, otherChild );
// for the reconstruction of kinematics, parent/child
// relationships are according to the branching process:
// now continue the shower
bool emitted = truncatedSpaceLikeShower( newParent, beam, branch,type);
// now reconstruct the momentum
if( !emitted ) {
if( intrinsicpT().find( progenitor() ) == intrinsicpT().end() ) {
bb.kinematics->updateLast( newParent, ZERO, ZERO );
}
else {
pair<Energy,double> kt = intrinsicpT()[ progenitor() ];
bb.kinematics->updateLast( newParent,
kt.first*cos( kt.second ),
kt.first*sin( kt.second ) );
}
}
particle->showerKinematics()->
updateChildren( newParent, theChildren, bb.type,false);
// perform the shower of the final-state particle
timeLikeShower( otherChild , type,Branching(),true);
updateHistory(otherChild);
// return the emitted
return true;
}
bool QTildeShowerHandler::
truncatedSpaceLikeDecayShower(tShowerParticlePtr particle,
const ShowerParticle::EvolutionScales & maxScales,
Energy minmass, HardBranchingPtr branch,
ShowerInteraction::Type type, Branching fb) {
// select a branching if we don't have one
if(!fb.kinematics)
fb = selectSpaceLikeDecayBranching(particle,maxScales,minmass,type,branch);
// must be an emission, the forced one it not a truncated one
assert(fb.kinematics);
ShowerParticleVector children;
int ntry=0;
Branching fc[2];
bool setupChildren = true;
while (ntry<50) {
if(!fc[0].hard) fc[0] = Branching();
if(!fc[1].hard) fc[1] = Branching();
++ntry;
if(setupChildren) {
++_nFSR;
// Assign the shower kinematics to the emitting particle.
particle->showerKinematics(fb.kinematics);
if(fb.kinematics->pT()>progenitor()->highestpT())
progenitor()->highestpT(fb.kinematics->pT());
// create the ShowerParticle objects for the two children
children = createTimeLikeChildren(particle,fb.ids);
// updateChildren the children
particle->showerKinematics()->
updateChildren(particle, children, fb.type,_reconOpt>=3);
setupChildren = false;
}
// select branchings for children
if(!fc[0].kinematics) {
if(children[0]->id()==particle->id()) {
// select branching for first particle
if(!fb.hard)
fc[0] = selectSpaceLikeDecayBranching(children[0],maxScales,minmass,type,branch);
else if(fb.hard && ! branch->children()[0]->children().empty() )
fc[0] = selectSpaceLikeDecayBranching(children[0],maxScales,minmass,type,
branch->children()[0]);
else
fc[0] = selectSpaceLikeDecayBranching(children[0],maxScales,minmass,type,
HardBranchingPtr());
}
else {
// select branching for first particle
if(fb.hard && !branch->children()[0]->children().empty() )
fc[0] = selectTimeLikeBranching(children[0],type,branch->children()[0]);
else
fc[0] = selectTimeLikeBranching(children[0],type,HardBranchingPtr());
}
}
// select branching for the second particle
if(!fc[1].kinematics) {
if(children[1]->id()==particle->id()) {
// select branching for first particle
if(!fb.hard)
fc[1] = selectSpaceLikeDecayBranching(children[1],maxScales,minmass,type,branch);
else if(fb.hard && ! branch->children()[1]->children().empty() )
fc[1] = selectSpaceLikeDecayBranching(children[1],maxScales,minmass,type,
branch->children()[1]);
else
fc[1] = selectSpaceLikeDecayBranching(children[1],maxScales,minmass,type,
HardBranchingPtr());
}
else {
if(fb.hard && !branch->children()[1]->children().empty() )
fc[1] = selectTimeLikeBranching(children[1],type,branch->children()[1]);
else
fc[1] = selectTimeLikeBranching(children[1],type,HardBranchingPtr());
}
}
// old default
if(_reconOpt==0 || (_reconOpt==1 && fb.hard) ) {
// update the history if needed
currentTree()->updateInitialStateShowerProduct(progenitor(),children[0]);
currentTree()->addInitialStateBranching(particle,children[0],children[1]);
// shower the first particle
if(fc[0].kinematics) {
if(children[0]->id()==particle->id()) {
if(!fb.hard)
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch,type,fc[0]);
else if(fb.hard && ! branch->children()[0]->children().empty() )
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch->children()[0],type,fc[0]);
else
spaceLikeDecayShower( children[0],maxScales,minmass,type,fc[0]);
}
else {
if(fb.hard && !branch->children()[0]->children().empty() )
truncatedTimeLikeShower(children[0],branch->children()[0],type,fc[0],false);
// normal shower
else
timeLikeShower(children[0],type,fc[0],false);
}
}
// shower the second particle
if(fc[1].kinematics) {
if(children[0]->id()==particle->id()) {
if(!fb.hard)
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch,type,fc[1]);
else if(fb.hard && ! branch->children()[0]->children().empty() )
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch->children()[0],type,fc[1]);
else
spaceLikeDecayShower( children[0],maxScales,minmass,type,fc[1]);
}
else {
if(fb.hard && !branch->children()[0]->children().empty() )
truncatedTimeLikeShower(children[0],branch->children()[0],type,fc[1],false);
// normal shower
else
timeLikeShower(children[0],type,fc[1],false);
}
}
updateHistory(children[1]);
// branching has happened
break;
}
// H7 default
else if(_reconOpt==1) {
// update the history if needed
currentTree()->updateInitialStateShowerProduct(progenitor(),children[0]);
currentTree()->addInitialStateBranching(particle,children[0],children[1]);
// shower the first particle
if(fc[0].kinematics) {
if(children[0]->id()==particle->id()) {
if(!fb.hard)
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch,type,fc[0]);
else if(fb.hard && ! branch->children()[0]->children().empty() )
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch->children()[0],type,fc[0]);
else
spaceLikeDecayShower( children[0],maxScales,minmass,type,fc[0]);
}
else {
if(fb.hard && !branch->children()[0]->children().empty() )
truncatedTimeLikeShower(children[0],branch->children()[0],type,fc[0],false);
// normal shower
else
timeLikeShower(children[0],type,fc[0],false);
}
}
// shower the second particle
if(fc[1].kinematics) {
if(children[0]->id()==particle->id()) {
if(!fb.hard)
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch,type,fc[1]);
else if(fb.hard && ! branch->children()[0]->children().empty() )
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch->children()[0],type,fc[1]);
else
spaceLikeDecayShower( children[0],maxScales,minmass,type,fc[1]);
}
else {
if(fb.hard && !branch->children()[0]->children().empty() )
truncatedTimeLikeShower(children[0],branch->children()[0],type,fc[1],false);
// normal shower
else
timeLikeShower(children[0],type,fc[1],false);
}
}
// clean up the vetoed emission
if(particle->virtualMass()==ZERO) {
particle->showerKinematics(ShoKinPtr());
for(unsigned int ix=0;ix<children.size();++ix)
particle->abandonChild(children[ix]);
children.clear();
particle->vetoEmission(fb.type,fb.kinematics->scale());
// generate the new emission
fb = selectSpaceLikeDecayBranching(particle,maxScales,minmass,type,branch);
// must be at least hard emission
assert(fb.kinematics);
setupChildren = true;
continue;
}
else {
updateHistory(children[1]);
break;
}
}
else if(_reconOpt>=2) {
// cut-off masses for the branching
const vector<Energy> & virtualMasses = fb.sudakov->virtualMasses(fb.ids);
// compute the masses of the children
Energy masses[3];
// space-like children
masses[1] = children[0]->virtualMass();
// time-like child
if(fc[1].kinematics) {
const vector<Energy> & vm = fc[1].sudakov->virtualMasses(fc[1].ids);
Energy2 q2 =
fc[1].kinematics->z()*(1.-fc[1].kinematics->z())*sqr(fc[1].kinematics->scale());
if(fc[1].ids[0]->id()!=ParticleID::g) q2 += sqr(vm[0]);
masses[2] = sqrt(q2);
}
else {
masses[2] = virtualMasses[2];
}
masses[0]=particle->virtualMass();
double z = fb.kinematics->z();
Energy2 pt2 = (1.-z)*(z*sqr(masses[0])-sqr(masses[1])-z/(1.-z)*sqr(masses[2]));
if(pt2>=ZERO) {
break;
}
else {
// reset the scales for the children
for(unsigned int ix=0;ix<2;++ix) {
if(fc[ix].kinematics)
children[ix]->vetoEmission(fc[ix].type,fc[ix].kinematics->scale());
else {
if(ix==0)
children[ix]->vetoEmission(ShowerPartnerType::QCDColourLine,Constants::MaxEnergy);
else
children[ix]->vetoEmission(ShowerPartnerType::QCDColourLine,ZERO);
}
}
children[0]->virtualMass(_progenitor->progenitor()->mass());
children[1]->virtualMass(ZERO);
}
}
};
if(_reconOpt>=2) {
// update the history if needed
currentTree()->updateInitialStateShowerProduct(progenitor(),children[0]);
currentTree()->addInitialStateBranching(particle,children[0],children[1]);
// shower the first particle
if(fc[0].kinematics) {
if(children[0]->id()==particle->id()) {
if(!fb.hard)
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch,type,fc[0]);
else if(fb.hard && ! branch->children()[0]->children().empty() )
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch->children()[0],type,fc[0]);
else
spaceLikeDecayShower( children[0],maxScales,minmass,type,fc[0]);
}
else {
if(fb.hard && !branch->children()[0]->children().empty() )
truncatedTimeLikeShower(children[0],branch->children()[0],type,fc[0],false);
// normal shower
else
timeLikeShower(children[0],type,fc[0],false);
}
}
// shower the second particle
if(fc[1].kinematics) {
if(children[0]->id()==particle->id()) {
if(!fb.hard)
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch,type,fc[1]);
else if(fb.hard && ! branch->children()[0]->children().empty() )
truncatedSpaceLikeDecayShower( children[0],maxScales,minmass,
branch->children()[0],type,fc[1]);
else
spaceLikeDecayShower( children[0],maxScales,minmass,type,fc[1]);
}
else {
if(fb.hard && !branch->children()[0]->children().empty() )
truncatedTimeLikeShower(children[0],branch->children()[0],type,fc[1],false);
// normal shower
else
timeLikeShower(children[0],type,fc[1],false);
}
}
updateHistory(children[1]);
}
return true;
}
void QTildeShowerHandler::connectTrees(ShowerTreePtr showerTree,
HardTreePtr hardTree, bool hard ) {
ShowerParticleVector particles;
// find the Sudakovs
for(set<HardBranchingPtr>::iterator cit=hardTree->branchings().begin();
cit!=hardTree->branchings().end();++cit) {
// Sudakovs for ISR
if((**cit).parent()&&(**cit).status()==HardBranching::Incoming) {
++_nis;
vector<long> br(3);
br[0] = (**cit).parent()->branchingParticle()->id();
br[1] = (**cit). branchingParticle()->id();
br[2] = (**cit).parent()->children()[0]==*cit ?
(**cit).parent()->children()[1]->branchingParticle()->id() :
(**cit).parent()->children()[0]->branchingParticle()->id();
BranchingList branchings = splittingGenerator()->initialStateBranchings();
if(br[1]<0&&br[0]==br[1]) {
br[0] = abs(br[0]);
br[1] = abs(br[1]);
}
else if(br[1]<0) {
br[1] = -br[1];
br[2] = -br[2];
}
long index = abs(br[1]);
SudakovPtr sudakov;
for(BranchingList::const_iterator cjt = branchings.lower_bound(index);
cjt != branchings.upper_bound(index); ++cjt ) {
IdList ids = cjt->second.particles;
if(ids[0]->id()==br[0]&&ids[1]->id()==br[1]&&ids[2]->id()==br[2]) {
sudakov=cjt->second.sudakov;
break;
}
}
if(!sudakov) throw Exception() << "Can't find Sudakov for the hard emission in "
<< "QTildeShowerHandler::connectTrees() for ISR"
<< Exception::runerror;
(**cit).parent()->sudakov(sudakov);
}
// Sudakovs for FSR
else if(!(**cit).children().empty()) {
++_nfs;
vector<long> br(3);
br[0] = (**cit) .branchingParticle()->id();
br[1] = (**cit).children()[0]->branchingParticle()->id();
br[2] = (**cit).children()[1]->branchingParticle()->id();
BranchingList branchings = splittingGenerator()->finalStateBranchings();
if(br[0]<0) {
br[0] = abs(br[0]);
br[1] = abs(br[1]);
br[2] = abs(br[2]);
}
long index = br[0];
SudakovPtr sudakov;
for(BranchingList::const_iterator cjt = branchings.lower_bound(index);
cjt != branchings.upper_bound(index); ++cjt ) {
IdList ids = cjt->second.particles;
if(ids[0]->id()==br[0]&&ids[1]->id()==br[1]&&ids[2]->id()==br[2]) {
sudakov=cjt->second.sudakov;
break;
}
}
if(!sudakov) throw Exception() << "Can't find Sudakov for the hard emission in "
<< "QTildeShowerHandler::connectTrees()"
<< Exception::runerror;
(**cit).sudakov(sudakov);
}
}
// calculate the evolution scale
for(set<HardBranchingPtr>::iterator cit=hardTree->branchings().begin();
cit!=hardTree->branchings().end();++cit) {
particles.push_back((*cit)->branchingParticle());
}
showerModel()->partnerFinder()->
setInitialEvolutionScales(particles,!hard,hardTree->interaction(),
!hardTree->partnersSet());
hardTree->partnersSet(true);
// inverse reconstruction
if(hard) {
showerModel()->kinematicsReconstructor()->
deconstructHardJets(hardTree,hardTree->interaction());
}
else
showerModel()->kinematicsReconstructor()->
deconstructDecayJets(hardTree,hardTree->interaction());
// now reset the momenta of the showering particles
vector<ShowerProgenitorPtr> particlesToShower;
for(map<ShowerProgenitorPtr,ShowerParticlePtr>::const_iterator
cit=showerTree->incomingLines().begin();
cit!=showerTree->incomingLines().end();++cit )
particlesToShower.push_back(cit->first);
// extract the showering particles
for(map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cit=showerTree->outgoingLines().begin();
cit!=showerTree->outgoingLines().end();++cit )
particlesToShower.push_back(cit->first);
// match them
map<ShowerProgenitorPtr,HardBranchingPtr> partners;
for(set<HardBranchingPtr>::const_iterator bit=hardTree->branchings().begin();
bit!=hardTree->branchings().end();++bit) {
Energy2 dmin( 1e30*GeV2 );
ShowerProgenitorPtr partner;
for(vector<ShowerProgenitorPtr>::const_iterator pit=particlesToShower.begin();
pit!=particlesToShower.end();++pit) {
if(partners.find(*pit)!=partners.end()) continue;
if( (**bit).branchingParticle()->id() != (**pit).progenitor()->id() ) continue;
if( (**bit).branchingParticle()->isFinalState() !=
(**pit).progenitor()->isFinalState() ) continue;
if( (**pit).progenitor()->isFinalState() ) {
Energy2 dtest =
sqr( (**pit).progenitor()->momentum().x() - (**bit).showerMomentum().x() ) +
sqr( (**pit).progenitor()->momentum().y() - (**bit).showerMomentum().y() ) +
sqr( (**pit).progenitor()->momentum().z() - (**bit).showerMomentum().z() ) +
sqr( (**pit).progenitor()->momentum().t() - (**bit).showerMomentum().t() );
// add mass difference for identical particles (e.g. Z0 Z0 production)
dtest += 1e10*sqr((**pit).progenitor()->momentum().m()-(**bit).showerMomentum().m());
if( dtest < dmin ) {
partner = *pit;
dmin = dtest;
}
}
else {
// ensure directions are right
if((**pit).progenitor()->momentum().z()/(**bit).showerMomentum().z()>ZERO) {
partner = *pit;
break;
}
}
}
if(!partner) throw Exception() << "Failed to match shower and hard trees in QTildeShowerHandler::hardestEmission"
<< Exception::eventerror;
partners[partner] = *bit;
}
for(vector<ShowerProgenitorPtr>::const_iterator pit=particlesToShower.begin();
pit!=particlesToShower.end();++pit) {
HardBranchingPtr partner = partners[*pit];
if((**pit).progenitor()->dataPtr()->stable()) {
(**pit).progenitor()->set5Momentum(partner->showerMomentum());
(**pit).copy()->set5Momentum(partner->showerMomentum());
}
else {
Lorentz5Momentum oldMomentum = (**pit).progenitor()->momentum();
Lorentz5Momentum newMomentum = partner->showerMomentum();
LorentzRotation boost( oldMomentum.findBoostToCM(),oldMomentum.e()/oldMomentum.mass());
(**pit).progenitor()->transform(boost);
(**pit).copy() ->transform(boost);
boost = LorentzRotation(-newMomentum.findBoostToCM(),newMomentum.e()/newMomentum.mass());
(**pit).progenitor()->transform(boost);
(**pit).copy() ->transform(boost);
}
}
// correction boosts for daughter trees
for(map<tShowerTreePtr,pair<tShowerProgenitorPtr,tShowerParticlePtr> >::const_iterator
tit = showerTree->treelinks().begin();
tit != showerTree->treelinks().end();++tit) {
ShowerTreePtr decayTree = tit->first;
map<ShowerProgenitorPtr,ShowerParticlePtr>::const_iterator
cit = decayTree->incomingLines().begin();
// reset the momentum of the decay particle
Lorentz5Momentum oldMomentum = cit->first->progenitor()->momentum();
Lorentz5Momentum newMomentum = tit->second.second->momentum();
LorentzRotation boost( oldMomentum.findBoostToCM(),oldMomentum.e()/oldMomentum.mass());
decayTree->transform(boost,true);
boost = LorentzRotation(-newMomentum.findBoostToCM(),newMomentum.e()/newMomentum.mass());
decayTree->transform(boost,true);
}
}
void QTildeShowerHandler::doShowering(bool hard,XCPtr xcomb) {
// zero number of emissions
_nis = _nfs = 0;
// if MC@NLO H event and limited emissions
// indicate both final and initial state emission
if ( currentTree()->isMCatNLOHEvent() && _limitEmissions != 0 ) {
_nis = _nfs = 1;
}
// extract particles to shower
vector<ShowerProgenitorPtr> particlesToShower(setupShower(hard));
// setup the maximum scales for the shower
if (restrictPhasespace()) setupMaximumScales(particlesToShower,xcomb);
// set the hard scales for the profiles
setupHardScales(particlesToShower,xcomb);
// specific stuff for hard processes and decays
Energy minmass(ZERO), mIn(ZERO);
// hard process generate the intrinsic p_T once and for all
if(hard) {
generateIntrinsicpT(particlesToShower);
}
// decay compute the minimum mass of the final-state
else {
for(unsigned int ix=0;ix<particlesToShower.size();++ix) {
if(particlesToShower[ix]->progenitor()->isFinalState()) {
if(particlesToShower[ix]->progenitor()->dataPtr()->stable())
minmass += particlesToShower[ix]->progenitor()->dataPtr()->constituentMass();
else
minmass += particlesToShower[ix]->progenitor()->mass();
}
else {
mIn = particlesToShower[ix]->progenitor()->mass();
}
}
// throw exception if decay can't happen
if ( minmass > mIn ) {
throw Exception() << "Evolver.cc: Mass of decaying particle is "
<< "below constituent masses of decay products."
<< Exception::eventerror;
}
}
// create random particle vector (only need to do once)
vector<ShowerProgenitorPtr> tmp;
unsigned int nColouredIncoming = 0;
while(particlesToShower.size()>0){
unsigned int xx=UseRandom::irnd(particlesToShower.size());
tmp.push_back(particlesToShower[xx]);
particlesToShower.erase(particlesToShower.begin()+xx);
}
particlesToShower=tmp;
for(unsigned int ix=0;ix<particlesToShower.size();++ix) {
if(!particlesToShower[ix]->progenitor()->isFinalState() &&
particlesToShower[ix]->progenitor()->coloured()) ++nColouredIncoming;
}
bool switchRecon = hard && nColouredIncoming !=1;
// main shower loop
unsigned int ntry(0);
bool reconstructed = false;
do {
// clear results of last attempt if needed
if(ntry!=0) {
currentTree()->clear();
setEvolutionPartners(hard,interaction_,true);
_nis = _nfs = 0;
// if MC@NLO H event and limited emissions
// indicate both final and initial state emission
if ( currentTree()->isMCatNLOHEvent() && _limitEmissions != 0 ) {
_nis = _nfs = 1;
}
for(unsigned int ix=0; ix<particlesToShower.size();++ix) {
SpinPtr spin = particlesToShower[ix]->progenitor()->spinInfo();
if(spin && spin->decayVertex() &&
dynamic_ptr_cast<tcSVertexPtr>(spin->decayVertex())) {
spin->decayVertex(VertexPtr());
}
}
}
// loop over particles
for(unsigned int ix=0;ix<particlesToShower.size();++ix) {
// extract the progenitor
progenitor(particlesToShower[ix]);
// final-state radiation
if(progenitor()->progenitor()->isFinalState()) {
if(!doFSR()) continue;
// perform shower
progenitor()->hasEmitted(startTimeLikeShower(interaction_));
}
// initial-state radiation
else {
if(!doISR()) continue;
// hard process
if(hard) {
// get the PDF
setBeamParticle(_progenitor->beam());
assert(beamParticle());
// perform the shower
// set the beam particle
tPPtr beamparticle=progenitor()->original();
if(!beamparticle->parents().empty())
beamparticle=beamparticle->parents()[0];
// generate the shower
progenitor()->hasEmitted(startSpaceLikeShower(beamparticle,
interaction_));
}
// decay
else {
// skip colour and electrically neutral particles
if(!progenitor()->progenitor()->dataPtr()->coloured() &&
!progenitor()->progenitor()->dataPtr()->charged()) {
progenitor()->hasEmitted(false);
continue;
}
// perform shower
// set the scales correctly. The current scale is the maximum scale for
// emission not the starting scale
ShowerParticle::EvolutionScales maxScales(progenitor()->progenitor()->scales());
progenitor()->progenitor()->scales() = ShowerParticle::EvolutionScales();
if(progenitor()->progenitor()->dataPtr()->charged()) {
progenitor()->progenitor()->scales().QED = progenitor()->progenitor()->mass();
progenitor()->progenitor()->scales().QED_noAO = progenitor()->progenitor()->mass();
}
if(progenitor()->progenitor()->hasColour()) {
progenitor()->progenitor()->scales().QCD_c = progenitor()->progenitor()->mass();
progenitor()->progenitor()->scales().QCD_c_noAO = progenitor()->progenitor()->mass();
}
if(progenitor()->progenitor()->hasAntiColour()) {
progenitor()->progenitor()->scales().QCD_ac = progenitor()->progenitor()->mass();
progenitor()->progenitor()->scales().QCD_ac_noAO = progenitor()->progenitor()->mass();
}
// perform the shower
progenitor()->hasEmitted(startSpaceLikeDecayShower(maxScales,minmass,
interaction_));
}
}
}
// do the kinematic reconstruction, checking if it worked
reconstructed = hard ?
showerModel()->kinematicsReconstructor()->
reconstructHardJets (currentTree(),intrinsicpT(),interaction_,
switchRecon && ntry>maximumTries()/2) :
showerModel()->kinematicsReconstructor()->
reconstructDecayJets(currentTree(),interaction_);
}
while(!reconstructed&&maximumTries()>++ntry);
// check if failed to generate the shower
if(ntry==maximumTries()) {
if(hard)
throw ShowerHandler::ShowerTriesVeto(ntry);
else
throw Exception() << "Failed to generate the shower after "
<< ntry << " attempts in QTildeShowerHandler::showerDecay()"
<< Exception::eventerror;
}
// tree has now showered
_currenttree->hasShowered(true);
hardTree(HardTreePtr());
}
void QTildeShowerHandler:: convertHardTree(bool hard,ShowerInteraction::Type type) {
map<ColinePtr,ColinePtr> cmap;
// incoming particles
for(map<ShowerProgenitorPtr,ShowerParticlePtr>::const_iterator
cit=currentTree()->incomingLines().begin();cit!=currentTree()->incomingLines().end();++cit) {
map<ShowerParticlePtr,tHardBranchingPtr>::const_iterator
mit = hardTree()->particles().find(cit->first->progenitor());
// put the colour lines in the map
ShowerParticlePtr oldParticle = cit->first->progenitor();
ShowerParticlePtr newParticle = mit->second->branchingParticle();
ColinePtr cLine = oldParticle-> colourLine();
ColinePtr aLine = oldParticle->antiColourLine();
if(newParticle->colourLine() &&
cmap.find(newParticle-> colourLine())==cmap.end())
cmap[newParticle-> colourLine()] = cLine;
if(newParticle->antiColourLine() &&
cmap.find(newParticle->antiColourLine())==cmap.end())
cmap[newParticle->antiColourLine()] = aLine;
// check whether or not particle emits
bool emission = mit->second->parent();
if(emission) {
if(newParticle->colourLine()) {
ColinePtr ctemp = newParticle-> colourLine();
ctemp->removeColoured(newParticle);
}
if(newParticle->antiColourLine()) {
ColinePtr ctemp = newParticle->antiColourLine();
ctemp->removeAntiColoured(newParticle);
}
newParticle = mit->second->parent()->branchingParticle();
}
// get the new colour lines
ColinePtr newCLine,newALine;
// sort out colour lines
if(newParticle->colourLine()) {
ColinePtr ctemp = newParticle-> colourLine();
ctemp->removeColoured(newParticle);
if(cmap.find(ctemp)!=cmap.end()) {
newCLine = cmap[ctemp];
}
else {
newCLine = new_ptr(ColourLine());
cmap[ctemp] = newCLine;
}
}
// and anticolour lines
if(newParticle->antiColourLine()) {
ColinePtr ctemp = newParticle->antiColourLine();
ctemp->removeAntiColoured(newParticle);
if(cmap.find(ctemp)!=cmap.end()) {
newALine = cmap[ctemp];
}
else {
newALine = new_ptr(ColourLine());
cmap[ctemp] = newALine;
}
}
// remove colour lines from old particle
if(aLine) {
aLine->removeAntiColoured(cit->first->copy());
aLine->removeAntiColoured(cit->first->progenitor());
}
if(cLine) {
cLine->removeColoured(cit->first->copy());
cLine->removeColoured(cit->first->progenitor());
}
// add particle to colour lines
if(newCLine) newCLine->addColoured (newParticle);
if(newALine) newALine->addAntiColoured(newParticle);
// insert new particles
cit->first->copy(newParticle);
ShowerParticlePtr sp(new_ptr(ShowerParticle(*newParticle,1,false)));
cit->first->progenitor(sp);
currentTree()->incomingLines()[cit->first]=sp;
cit->first->perturbative(!emission);
// and the emitted particle if needed
if(emission) {
ShowerParticlePtr newOut = mit->second->parent()->children()[1]->branchingParticle();
if(newOut->colourLine()) {
ColinePtr ctemp = newOut-> colourLine();
ctemp->removeColoured(newOut);
assert(cmap.find(ctemp)!=cmap.end());
cmap[ctemp]->addColoured (newOut);
}
if(newOut->antiColourLine()) {
ColinePtr ctemp = newOut->antiColourLine();
ctemp->removeAntiColoured(newOut);
assert(cmap.find(ctemp)!=cmap.end());
cmap[ctemp]->addAntiColoured(newOut);
}
ShowerParticlePtr sout=new_ptr(ShowerParticle(*newOut,1,true));
ShowerProgenitorPtr out=new_ptr(ShowerProgenitor(cit->first->original(),newOut,sout));
out->perturbative(false);
currentTree()->outgoingLines().insert(make_pair(out,sout));
}
if(hard) {
// sort out the value of x
if(mit->second->beam()->momentum().z()>ZERO) {
sp->x(newParticle->momentum(). plus()/mit->second->beam()->momentum(). plus());
}
else {
sp->x(newParticle->momentum().minus()/mit->second->beam()->momentum().minus());
}
}
}
// outgoing particles
for(map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
cit=currentTree()->outgoingLines().begin();cit!=currentTree()->outgoingLines().end();++cit) {
map<tShowerTreePtr,pair<tShowerProgenitorPtr,
tShowerParticlePtr> >::const_iterator tit;
for(tit = currentTree()->treelinks().begin();
tit != currentTree()->treelinks().end();++tit) {
if(tit->second.first && tit->second.second==cit->first->progenitor())
break;
}
map<ShowerParticlePtr,tHardBranchingPtr>::const_iterator
mit = hardTree()->particles().find(cit->first->progenitor());
if(mit==hardTree()->particles().end()) continue;
// put the colour lines in the map
ShowerParticlePtr oldParticle = cit->first->progenitor();
ShowerParticlePtr newParticle = mit->second->branchingParticle();
ShowerParticlePtr newOut;
ColinePtr cLine = oldParticle-> colourLine();
ColinePtr aLine = oldParticle->antiColourLine();
if(newParticle->colourLine() &&
cmap.find(newParticle-> colourLine())==cmap.end())
cmap[newParticle-> colourLine()] = cLine;
if(newParticle->antiColourLine() &&
cmap.find(newParticle->antiColourLine())==cmap.end())
cmap[newParticle->antiColourLine()] = aLine;
// check whether or not particle emits
bool emission = !mit->second->children().empty();
if(emission) {
if(newParticle->colourLine()) {
ColinePtr ctemp = newParticle-> colourLine();
ctemp->removeColoured(newParticle);
}
if(newParticle->antiColourLine()) {
ColinePtr ctemp = newParticle->antiColourLine();
ctemp->removeAntiColoured(newParticle);
}
newParticle = mit->second->children()[0]->branchingParticle();
newOut = mit->second->children()[1]->branchingParticle();
if(newParticle->id()!=oldParticle->id()&&newParticle->id()==newOut->id())
swap(newParticle,newOut);
}
// get the new colour lines
ColinePtr newCLine,newALine;
// sort out colour lines
if(newParticle->colourLine()) {
ColinePtr ctemp = newParticle-> colourLine();
ctemp->removeColoured(newParticle);
if(cmap.find(ctemp)!=cmap.end()) {
newCLine = cmap[ctemp];
}
else {
newCLine = new_ptr(ColourLine());
cmap[ctemp] = newCLine;
}
}
// and anticolour lines
if(newParticle->antiColourLine()) {
ColinePtr ctemp = newParticle->antiColourLine();
ctemp->removeAntiColoured(newParticle);
if(cmap.find(ctemp)!=cmap.end()) {
newALine = cmap[ctemp];
}
else {
newALine = new_ptr(ColourLine());
cmap[ctemp] = newALine;
}
}
// remove colour lines from old particle
if(aLine) {
aLine->removeAntiColoured(cit->first->copy());
aLine->removeAntiColoured(cit->first->progenitor());
}
if(cLine) {
cLine->removeColoured(cit->first->copy());
cLine->removeColoured(cit->first->progenitor());
}
// special for unstable particles
if(newParticle->id()==oldParticle->id() &&
(tit!=currentTree()->treelinks().end()||!oldParticle->dataPtr()->stable())) {
Lorentz5Momentum oldMomentum = oldParticle->momentum();
Lorentz5Momentum newMomentum = newParticle->momentum();
LorentzRotation boost( oldMomentum.findBoostToCM(),oldMomentum.e()/oldMomentum.mass());
if(tit!=currentTree()->treelinks().end()) tit->first->transform(boost,false);
oldParticle->transform(boost);
boost = LorentzRotation(-newMomentum.findBoostToCM(),newMomentum.e()/newMomentum.mass());
oldParticle->transform(boost);
if(tit!=currentTree()->treelinks().end()) tit->first->transform(boost,false);
newParticle=oldParticle;
}
// add particle to colour lines
if(newCLine) newCLine->addColoured (newParticle);
if(newALine) newALine->addAntiColoured(newParticle);
// insert new particles
cit->first->copy(newParticle);
ShowerParticlePtr sp(new_ptr(ShowerParticle(*newParticle,1,true)));
cit->first->progenitor(sp);
currentTree()->outgoingLines()[cit->first]=sp;
cit->first->perturbative(!emission);
// and the emitted particle if needed
if(emission) {
if(newOut->colourLine()) {
ColinePtr ctemp = newOut-> colourLine();
ctemp->removeColoured(newOut);
assert(cmap.find(ctemp)!=cmap.end());
cmap[ctemp]->addColoured (newOut);
}
if(newOut->antiColourLine()) {
ColinePtr ctemp = newOut->antiColourLine();
ctemp->removeAntiColoured(newOut);
assert(cmap.find(ctemp)!=cmap.end());
cmap[ctemp]->addAntiColoured(newOut);
}
ShowerParticlePtr sout=new_ptr(ShowerParticle(*newOut,1,true));
ShowerProgenitorPtr out=new_ptr(ShowerProgenitor(cit->first->original(),newOut,sout));
out->perturbative(false);
currentTree()->outgoingLines().insert(make_pair(out,sout));
}
// update any decay products
if(tit!=currentTree()->treelinks().end())
currentTree()->updateLink(tit->first,make_pair(cit->first,sp));
}
// reset the tree
currentTree()->resetShowerProducts();
// reextract the particles and set the colour partners
vector<ShowerParticlePtr> particles =
currentTree()->extractProgenitorParticles();
// clear the partners
for(unsigned int ix=0;ix<particles.size();++ix) {
particles[ix]->partner(ShowerParticlePtr());
particles[ix]->clearPartners();
}
// clear the tree
hardTree(HardTreePtr());
// Set the initial evolution scales
showerModel()->partnerFinder()->
setInitialEvolutionScales(particles,!hard,type,!_hardtree);
}
Branching QTildeShowerHandler::selectTimeLikeBranching(tShowerParticlePtr particle,
ShowerInteraction::Type type,
HardBranchingPtr branch) {
Branching fb;
unsigned int iout=0;
while (true) {
// break if doing truncated shower and no truncated shower needed
if(branch && (!isTruncatedShowerON()||hardOnly())) break;
fb=_splittingGenerator->chooseForwardBranching(*particle,_finalenhance,type);
// no emission break
if(!fb.kinematics) break;
// special for truncated shower
if(branch) {
// check haven't evolved too far
if(fb.kinematics->scale() < branch->scale()) {
fb=Branching();
break;
}
// find the truncated line
iout=0;
if(fb.ids[1]->id()!=fb.ids[2]->id()) {
if(fb.ids[1]->id()==particle->id()) iout=1;
else if (fb.ids[2]->id()==particle->id()) iout=2;
}
else if(fb.ids[1]->id()==particle->id()) {
if(fb.kinematics->z()>0.5) iout=1;
else iout=2;
}
// apply the vetos for the truncated shower
// no flavour changing branchings
if(iout==0) {
particle->vetoEmission(fb.type,fb.kinematics->scale());
continue;
}
double zsplit = iout==1 ? fb.kinematics->z() : 1-fb.kinematics->z();
// only if same interaction for forced branching
ShowerInteraction::Type type2 = convertInteraction(fb.type);
// and evolution
if(type2==branch->sudakov()->interactionType()) {
if(zsplit < 0.5 || // hardest line veto
fb.kinematics->scale()*zsplit < branch->scale() ) { // angular ordering veto
particle->vetoEmission(fb.type,fb.kinematics->scale());
continue;
}
}
// pt veto
if(fb.kinematics->pT() > progenitor()->maximumpT(type2)) {
particle->vetoEmission(fb.type,fb.kinematics->scale());
continue;
}
}
// standard vetos for all emissions
if(timeLikeVetoed(fb,particle)) {
particle->vetoEmission(fb.type,fb.kinematics->scale());
if(particle->spinInfo()) particle->spinInfo()->decayVertex(VertexPtr());
continue;
}
// special for already decayed particles
// don't allow flavour changing branchings
bool vetoDecay = false;
for(map<tShowerTreePtr,pair<tShowerProgenitorPtr,
tShowerParticlePtr> >::const_iterator tit = currentTree()->treelinks().begin();
tit != currentTree()->treelinks().end();++tit) {
if(tit->second.first == progenitor()) {
map<ShowerProgenitorPtr,tShowerParticlePtr>::const_iterator
it = currentTree()->outgoingLines().find(progenitor());
if(it!=currentTree()->outgoingLines().end() && particle == it->second &&
fb.ids[0]!=fb.ids[1] && fb.ids[1]!=fb.ids[2]) {
vetoDecay = true;
break;
}
}
}
if(vetoDecay) {
cerr << "testing veto\n";
particle->vetoEmission(fb.type,fb.kinematics->scale());
if(particle->spinInfo()) particle->spinInfo()->decayVertex(VertexPtr());
continue;
}
break;
}
// normal case
if(!branch) {
if(fb.kinematics) fb.hard = false;
return fb;
}
// truncated emission
if(fb.kinematics) {
fb.hard = false;
fb.iout = iout;
return fb;
}
// otherwise need to return the hard emission
// construct the kinematics for the hard emission
ShoKinPtr showerKin=
branch->sudakov()->createFinalStateBranching(branch->scale(),
branch->children()[0]->z(),
branch->phi(),
branch->children()[0]->pT());
IdList idlist(3);
idlist[0] = particle->dataPtr();
idlist[1] = branch->children()[0]->branchingParticle()->dataPtr();
idlist[2] = branch->children()[1]->branchingParticle()->dataPtr();
fb = Branching( showerKin, idlist, branch->sudakov(),branch->type() );
fb.hard = true;
fb.iout=0;
// return it
return fb;
}
Branching QTildeShowerHandler::selectSpaceLikeDecayBranching(tShowerParticlePtr particle,
const ShowerParticle::EvolutionScales & maxScales,
Energy minmass,ShowerInteraction::Type type,
HardBranchingPtr branch) {
Branching fb;
unsigned int iout=0;
while (true) {
// break if doing truncated shower and no truncated shower needed
if(branch && (!isTruncatedShowerON()||hardOnly())) break;
// select branching
fb=_splittingGenerator->chooseDecayBranching(*particle,maxScales,minmass,
_initialenhance,type);
// return if no radiation
if(!fb.kinematics) break;
// special for truncated shower
if(branch) {
// check haven't evolved too far
if(fb.kinematics->scale() < branch->scale()) {
fb=Branching();
break;
}
// find the truncated line
iout=0;
if(fb.ids[1]->id()!=fb.ids[2]->id()) {
if(fb.ids[1]->id()==particle->id()) iout=1;
else if (fb.ids[2]->id()==particle->id()) iout=2;
}
else if(fb.ids[1]->id()==particle->id()) {
if(fb.kinematics->z()>0.5) iout=1;
else iout=2;
}
// apply the vetos for the truncated shower
// no flavour changing branchings
if(iout==0) {
particle->vetoEmission(fb.type,fb.kinematics->scale());
continue;
}
ShowerInteraction::Type type2 = convertInteraction(fb.type);
double zsplit = iout==1 ? fb.kinematics->z() : 1-fb.kinematics->z();
if(type2==branch->sudakov()->interactionType()) {
if(zsplit < 0.5 || // hardest line veto
fb.kinematics->scale()*zsplit < branch->scale() ) { // angular ordering veto
particle->vetoEmission(fb.type,fb.kinematics->scale());
continue;
}
}
// pt veto
if(fb.kinematics->pT() > progenitor()->maximumpT(type2)) {
particle->vetoEmission(fb.type,fb.kinematics->scale());
continue;
}
}
// if not vetoed break
if(spaceLikeDecayVetoed(fb,particle)) {
// otherwise reset scale and continue
particle->vetoEmission(fb.type,fb.kinematics->scale());
continue;
}
break;
}
// normal case
if(!branch) {
if(fb.kinematics) fb.hard = false;
return fb;
}
// truncated emission
if(fb.kinematics) {
fb.hard = false;
fb.iout = iout;
return fb;
}
// otherwise need to return the hard emission
// construct the kinematics for the hard emission
ShoKinPtr showerKin=
branch->sudakov()->createDecayBranching(branch->scale(),
branch->children()[0]->z(),
branch->phi(),
branch->children()[0]->pT());
IdList idlist(3);
idlist[0] = particle->dataPtr();
idlist[1] = branch->children()[0]->branchingParticle()->dataPtr();
idlist[2] = branch->children()[1]->branchingParticle()->dataPtr();
// create the branching
fb = Branching( showerKin, idlist, branch->sudakov(),ShowerPartnerType::QCDColourLine );
fb.hard=true;
fb.iout=0;
// return it
return fb;
}
void QTildeShowerHandler::checkFlags() {
string error = "Inconsistent hard emission set-up in QTildeShowerHandler::showerHardProcess(). ";
if ( ( currentTree()->isMCatNLOSEvent() || currentTree()->isMCatNLOHEvent() ) ){
if (_hardEmissionMode > 1)
throw Exception() << error
<< "Cannot generate POWHEG matching with MC@NLO shower "
<< "approximation. Add 'set Evolver:HardEmissionMode 0' to input file."
<< Exception::runerror;
if ( canHandleMatchboxTrunc() )
throw Exception() << error
<< "Cannot use truncated qtilde shower with MC@NLO shower "
<< "approximation. Set LHCGenerator:EventHandler"
<< ":CascadeHandler to '/Herwig/Shower/ShowerHandler' or "
<< "'/Herwig/Shower/Dipole/DipoleShowerHandler'."
<< Exception::runerror;
}
else if ( ((currentTree()->isPowhegSEvent() || currentTree()->isPowhegHEvent()) ) &&
_hardEmissionMode < 2){
if ( canHandleMatchboxTrunc())
throw Exception() << error
<< "Unmatched events requested for POWHEG shower "
<< "approximation. Set Evolver:HardEmissionMode to "
<< "'MatchboxPOWHEG' or 'FullPOWHEG'."
<< Exception::runerror;
else if (_hardEmissionModeWarn){
_hardEmissionModeWarn = false;
_hardEmissionMode+=2;
throw Exception() << error
<< "Unmatched events requested for POWHEG shower "
<< "approximation. Changing Evolver:HardEmissionMode from "
<< _hardEmissionMode-2 << " to " << _hardEmissionMode
<< Exception::warning;
}
}
if ( currentTree()->isPowhegSEvent() || currentTree()->isPowhegHEvent()) {
if (currentTree()->showerApproximation()->needsTruncatedShower() &&
!canHandleMatchboxTrunc() )
throw Exception() << error
<< "Current shower handler cannot generate truncated shower. "
<< "Set Generator:EventHandler:CascadeHandler to "
<< "'/Herwig/Shower/PowhegShowerHandler'."
<< Exception::runerror;
}
else if ( currentTree()->truncatedShower() && _missingTruncWarn) {
_missingTruncWarn=false;
throw Exception() << "Warning: POWHEG shower approximation used without "
<< "truncated shower. Set Generator:EventHandler:"
<< "CascadeHandler to '/Herwig/Shower/PowhegShowerHandler' and "
<< "'MEMatching:TruncatedShower Yes'."
<< Exception::warning;
}
// else if ( !dipme && _hardEmissionMode > 1 &&
// firstInteraction())
// throw Exception() << error
// << "POWHEG matching requested for LO events. Include "
// << "'set Factory:ShowerApproximation MEMatching' in input file."
// << Exception::runerror;
}
tPPair QTildeShowerHandler::remakeRemnant(tPPair oldp){
// get the parton extractor
PartonExtractor & pex = *lastExtractor();
// get the new partons
tPPair newp = make_pair(findFirstParton(oldp.first ),
findFirstParton(oldp.second));
// if the same do nothing
if(newp == oldp) return oldp;
// Creates the new remnants and returns the new PartonBinInstances
// ATTENTION Broken here for very strange configuration
PBIPair newbins = pex.newRemnants(oldp, newp, newStep());
newStep()->addIntermediate(newp.first);
newStep()->addIntermediate(newp.second);
// return the new partons
return newp;
}
PPtr QTildeShowerHandler::findFirstParton(tPPtr seed) const{
if(seed->parents().empty()) return seed;
tPPtr parent = seed->parents()[0];
//if no parent there this is a loose end which will
//be connected to the remnant soon.
if(!parent || parent == incomingBeams().first ||
parent == incomingBeams().second ) return seed;
else return findFirstParton(parent);
}
void QTildeShowerHandler::decay(ShowerTreePtr tree, ShowerDecayMap & decay) {
// must be one incoming particle
assert(tree->incomingLines().size()==1);
// apply any transforms
tree->applyTransforms();
// if already decayed return
if(!tree->outgoingLines().empty()) return;
// now we need to replace the particle with a new copy after the shower
// find particle after the shower
map<tShowerTreePtr,pair<tShowerProgenitorPtr,tShowerParticlePtr> >::const_iterator
tit = tree->parent()->treelinks().find(tree);
assert(tit!=tree->parent()->treelinks().end());
ShowerParticlePtr newparent=tit->second.second;
PerturbativeProcessPtr newProcess = new_ptr(PerturbativeProcess());
newProcess->incoming().push_back(make_pair(newparent,PerturbativeProcessPtr()));
DecayProcessMap decayMap;
ShowerHandler::decay(newProcess,decayMap);
ShowerTree::constructTrees(tree,decay,newProcess,decayMap);
}
diff --git a/Tests/Rivet/Templates/DIS-Powheg.in b/Tests/Rivet/Templates/DIS-Powheg.in
--- a/Tests/Rivet/Templates/DIS-Powheg.in
+++ b/Tests/Rivet/Templates/DIS-Powheg.in
@@ -1,56 +1,56 @@
##################################################
# Example generator based on DIS parameters
# usage: Herwig read DIS.in
##################################################
read Matchbox/Powheg-Default-ShowerAlphaSTune.in
set /Herwig/Particles/e-:PDF /Herwig/Partons/NoPDF
set /Herwig/Particles/e+:PDF /Herwig/Partons/NoPDF
# switch off final-state electron/muon FSR
do /Herwig/Shower/SplittingGenerator:DeleteFinalSplitting e-->e-,gamma; /Herwig/Shower/LtoLGammaSudakov
do /Herwig/Shower/SplittingGenerator:DeleteFinalSplitting mu-->mu-,gamma; /Herwig/Shower/LtoLGammaSudakov
do /Herwig/Shower/SplittingGenerator:DeleteFinalSplitting tau-->tau-,gamma; /Herwig/Shower/LtoLGammaSudakov
set /Herwig/Shower/KinematicsReconstructor:ReconstructionOption Colour
##################################################
# Need to use an NLO PDF
##################################################
set /Herwig/Particles/p+:PDF /Herwig/Partons/HardNLOPDF
set /Herwig/Particles/pbar-:PDF /Herwig/Partons/HardNLOPDF
set /Herwig/Shower/ShowerHandler:PDFA /Herwig/Partons/ShowerLOPDF
set /Herwig/Partons/MPIExtractor:FirstPDF /Herwig/Partons/MPIPDF
set /Herwig/Partons/QCDExtractor:FirstPDF /Herwig/Partons/HardNLOPDF
##################################################
# Setup the POWHEG shower
##################################################
cd /Herwig/Shower
-set Evolver:IntrinsicPtGaussian 1.9*GeV
-set Evolver:HardEmissionMode POWHEG
+set ShowerHandler:IntrinsicPtGaussian 1.9*GeV
+set ShowerHandler:HardEmissionMode POWHEG
cd /Herwig/MatrixElements/
# Neutral current DIS
insert SimpleDIS:MatrixElements[0] /Herwig/MatrixElements/PowhegMEDISNC
${process}
cd /Herwig/Generators
set DISGenerator:NumberOfEvents 10000000
set DISGenerator:RandomNumberGenerator:Seed 31122001
set DISGenerator:DebugLevel 0
set DISGenerator:PrintEvent 10
set DISGenerator:MaxErrors 1000000
set /Herwig/Shower/ShowerHandler:MPIHandler NULL
cd /Herwig/Generators
create ThePEG::RivetAnalysis /Herwig/Analysis/RivetAnalysis RivetAnalysis.so
insert DISGenerator:AnalysisHandlers 0 /Herwig/Analysis/RivetAnalysis
mv /Herwig/Generators/DISGenerator /Herwig/Generators/EventGenerator
read ${parameterFile}
##################################################
# Save run for later usage with 'Herwig run'
##################################################
cd /Herwig/Generators
saverun ${runname} EventGenerator
diff --git a/Tests/Rivet/Templates/Hadron-Gamma.in b/Tests/Rivet/Templates/Hadron-Gamma.in
--- a/Tests/Rivet/Templates/Hadron-Gamma.in
+++ b/Tests/Rivet/Templates/Hadron-Gamma.in
@@ -1,54 +1,57 @@
+# -*- ThePEG-repository -*-
##################################################
# Technical parameters for this run
##################################################
cd /Herwig/Generators
set LHCGenerator:NumberOfEvents 10000000
set LHCGenerator:RandomNumberGenerator:Seed 31122001
set LHCGenerator:PrintEvent 10
set LHCGenerator:MaxErrors 1000000
set LHCGenerator:EventHandler:StatLevel Full
set LHCGenerator:EventHandler:Sampler:Ntry 10000
set /Herwig/Partons/QCDExtractor:FlatSHatY 0
##################################################
# Change the proton PDFs to those for photon radiation
##################################################
set /Herwig/Particles/p+:PDF /Herwig/Partons/BudnevPDF
set /Herwig/Particles/pbar-:PDF /Herwig/Partons/BudnevPDF
set /Herwig/Partons/QCDExtractor:FirstPDF /Herwig/Partons/BudnevPDF
set /Herwig/Partons/QCDExtractor:SecondPDF /Herwig/Partons/BudnevPDF
+set /Herwig/Shower/ShowerHandler:PDFA NULL
+set /Herwig/Shower/ShowerHandler:PDFB NULL
# No MPI
set LHCGenerator:EventHandler:CascadeHandler:MPIHandler NULL
##################################################
# Create the Herwig analysis
##################################################
create ThePEG::RivetAnalysis /Herwig/Analysis/RivetAnalysis RivetAnalysis.so
insert LHCGenerator:AnalysisHandlers 0 /Herwig/Analysis/RivetAnalysis
set /Herwig/Analysis/RivetAnalysis:Debug No
##################################################
# Cuts
##################################################
cd /Herwig/Cuts
set QCDCuts:ScaleMin 0.0*GeV
set QCDCuts:X1Min 0
set QCDCuts:X2Min 0
set QCDCuts:X1Max 1.
set QCDCuts:X2Max 1.
set QCDCuts:MHatMin 1.*GeV
erase QCDCuts:MultiCuts 0
set LeptonKtCut:MinKT 3*GeV
mv /Herwig/Generators/LHCGenerator /Herwig/Generators/EventGenerator
cd /Herwig/MatrixElements
${process}
cd /Herwig/Generators
read ${parameterFile}
##################################################
# Save run for later usage with 'Herwig run'
##################################################
cd /Herwig/Generators
saverun ${runname} EventGenerator
diff --git a/Tests/Rivet/Templates/Hadron-Powheg.in b/Tests/Rivet/Templates/Hadron-Powheg.in
--- a/Tests/Rivet/Templates/Hadron-Powheg.in
+++ b/Tests/Rivet/Templates/Hadron-Powheg.in
@@ -1,49 +1,49 @@
##################################################
# Technical parameters for this run
##################################################
cd /Herwig/Generators
set LHCGenerator:NumberOfEvents 10000000
set LHCGenerator:RandomNumberGenerator:Seed 31122001
set LHCGenerator:PrintEvent 10
set LHCGenerator:MaxErrors 1000000
##################################################
# Need to use an NLO PDF
##################################################
set /Herwig/Particles/p+:PDF /Herwig/Partons/HardNLOPDF
set /Herwig/Particles/pbar-:PDF /Herwig/Partons/HardNLOPDF
set /Herwig/Shower/ShowerHandler:PDFA /Herwig/Partons/ShowerLOPDF
set /Herwig/Shower/ShowerHandler:PDFB /Herwig/Partons/ShowerLOPDF
set /Herwig/Partons/MPIExtractor:FirstPDF /Herwig/Partons/MPIPDF
set /Herwig/Partons/MPIExtractor:SecondPDF /Herwig/Partons/MPIPDF
set /Herwig/Partons/QCDExtractor:FirstPDF /Herwig/Partons/HardNLOPDF
set /Herwig/Partons/QCDExtractor:SecondPDF /Herwig/Partons/HardNLOPDF
##################################################
# Setup the POWHEG shower
##################################################
cd /Herwig/Shower
-set Evolver:IntrinsicPtGaussian 1.9*GeV
-set Evolver:HardEmissionMode POWHEG
+set ShowerHandler:IntrinsicPtGaussian 1.9*GeV
+set ShowerHandler:HardEmissionMode POWHEG
read Matchbox/Powheg-Default-ShowerAlphaSTune.in
##################################################
# Create the Herwig analysis
##################################################
cd /Herwig/Generators
create ThePEG::RivetAnalysis /Herwig/Analysis/RivetAnalysis RivetAnalysis.so
insert LHCGenerator:AnalysisHandlers 0 /Herwig/Analysis/RivetAnalysis
mv /Herwig/Generators/LHCGenerator /Herwig/Generators/EventGenerator
cd /Herwig/MatrixElements
${process}
cd /Herwig/Generators
read ${parameterFile}
##################################################
# Save run for later usage with 'Herwig run'
##################################################
cd /Herwig/Generators
saverun ${runname} EventGenerator
diff --git a/Tests/Rivet/Templates/LEP-Powheg.in b/Tests/Rivet/Templates/LEP-Powheg.in
--- a/Tests/Rivet/Templates/LEP-Powheg.in
+++ b/Tests/Rivet/Templates/LEP-Powheg.in
@@ -1,45 +1,45 @@
##################################################
# base parameters for LEP analyses
##################################################
##################################################
# Technical parameters for this run
##################################################
cd /Herwig/Generators
read Matchbox/Powheg-Default-ShowerAlphaSTune.in
set LEPGenerator:NumberOfEvents 100000000
set LEPGenerator:RandomNumberGenerator:Seed 31122001
set LEPGenerator:DebugLevel 0
set LEPGenerator:PrintEvent 10
set LEPGenerator:MaxErrors 1000000
# no MPI
set LEPGenerator:EventHandler:CascadeHandler:MPIHandler NULL
##################################################
# Switch off ISR
##################################################
set /Herwig/Particles/e-:PDF /Herwig/Partons/NoPDF
set /Herwig/Particles/e+:PDF /Herwig/Partons/NoPDF
##################################################
# Create the Herwig analysis
##################################################
create ThePEG::RivetAnalysis /Herwig/Analysis/RivetAnalysis RivetAnalysis.so
insert LEPGenerator:AnalysisHandlers 0 /Herwig/Analysis/RivetAnalysis
##################################################
# Use the NLO q qbar matrix element
##################################################
-set /Herwig/Shower/Evolver:HardEmissionMode POWHEG
+set /Herwig/Shower/ShowerHandler:HardEmissionMode POWHEG
insert /Herwig/MatrixElements/SimpleEE:MatrixElements 0 /Herwig/MatrixElements/PowhegMEee2gZ2qq
${process}
set /Herwig/Shower/PartnerFinder:QEDPartner IIandFF
mv /Herwig/Generators/LEPGenerator /Herwig/Generators/EventGenerator
read ${parameterFile}
##################################################
# Save run for later usage with 'Herwig run'
##################################################
cd /Herwig/Generators
saverun ${runname} EventGenerator
diff --git a/Tests/python/make_input_files.py b/Tests/python/make_input_files.py
--- a/Tests/python/make_input_files.py
+++ b/Tests/python/make_input_files.py
@@ -1,1385 +1,1385 @@
#! /usr/bin/env python
import logging,sys,os
from string import strip, Template
import sys
if sys.version_info[:3] < (2,4,0):
print "rivet scripts require Python version >= 2.4.0... exiting"
sys.exit(1)
if __name__ == "__main__":
import logging
from optparse import OptionParser, OptionGroup
parser = OptionParser(usage="%prog name [...]")
(opts, args) = parser.parse_args()
## Check args
if len(args) != 1:
logging.error("Must specify at least input file")
sys.exit(1)
name=args[0]
collider=""
# select the template to load
# collider
parameters = {}
if(name.find("BFactory")==0) :
collider="BFactory"
elif(name.find("LEP")==0) :
collider="LEP"
elif(name.find("DIS")==0) :
collider="DIS"
elif(name.find("TVT")==0) :
collider="TVT"
elif(name.find("LHC-GammaGamma")==0) :
collider="LHC-GammaGamma"
elif(name.find("LHC")==0) :
collider="LHC"
elif(name.find("ISR")==0) :
collider="ISR"
elif(name.find("SppS")==0) :
collider="SppS"
elif(name.find("Star")==0) :
collider="Star"
simulation=""
istart = 1
print name
if(name.find("Matchbox-Powheg")>0) :
istart = 3
simulation="Matchbox"
parameters["shower"] = "read Matchbox/Powheg-DefaultShower.in\n"
elif(name.find("Matchbox")>0) :
istart = 2
simulation="Matchbox"
parameters["shower"] = "read Matchbox/MCatNLO-DefaultShower.in\n"
elif(name.find("Dipole")>0) :
istart = 2
simulation="Matchbox"
parameters["shower"] = "read Matchbox/MCatNLO-DipoleShower.in\n"
elif(name.find("Powheg")>0) :
istart = 2
simulation="Powheg"
if(simulation=="Matchbox") :
parameters["bscheme"] = "read Matchbox/FiveFlavourScheme.in\n"
if(parameters["shower"].find("Dipole")>=0) :
parameters["bscheme"] += "read Matchbox/FiveFlavourNoBMassScheme.in\n"
if(collider.find("DIS")<0) :
parameters["nlo"] = "read Matchbox/MadGraph-OpenLoops.in\n"
if(collider=="") :
logging.error("Can\'t find collider")
sys.exit(1)
# find the template
if(simulation=="") :
if(collider.find("LHC-GammaGamma") >=0) :
istart += 1
templateName="Hadron-Gamma.in"
elif(collider.find("TVT")>=0 or collider.find("LHC") >=0 or
collider.find("ISR")>=0 or collider.find("SppS")>=0 or
collider.find("Star")>=0) :
templateName="Hadron.in"
elif(collider.find("BFactory")<0) :
templateName= "%s.in" % (collider)
else :
templateName= "LEP.in"
else :
if(collider.find("TVT")>=0 or collider.find("LHC") >=0 or
collider.find("ISR")>=0 or collider.find("SppS")>=0 or
collider.find("Star")>=0) :
templateName= "Hadron-%s.in" % (simulation)
elif(collider.find("BFactory")<0) :
templateName= "%s-%s.in" % (collider,simulation)
else :
templateName= "LEP-%s.in" % (simulation)
with open(os.path.join("Rivet/Templates",templateName), 'r') as f:
templateText = f.read()
template = Template( templateText )
# work out the name of the parameter file
nameSplit=name.split("-")
parameterName=nameSplit[istart]
for i in range(istart+1,len(nameSplit)) :
parameterName += "-%s" % nameSplit[i]
# work out the process and parameters
process=""
# Bfactory
if(collider=="BFactory") :
if(simulation=="") :
if(parameterName=="10.58-res") :
process += "\ncreate Herwig::MEee2VectorMeson /Herwig/MatrixElements/MEUpsilon HwMELepton.so\nset /Herwig/MatrixElements/MEUpsilon:VectorMeson /Herwig/Particles/Upsilon(4S)\nset /Herwig/MatrixElements/MEUpsilon:Coupling 0.0004151809\nset /Herwig/MatrixElements/SimpleEE:MatrixElements 0 /Herwig/MatrixElements/MEUpsilon"
elif(parameterName=="10.58") :
process += "\ncreate Herwig::MEee2VectorMeson /Herwig/MatrixElements/MEUpsilon HwMELepton.so\nset /Herwig/MatrixElements/MEUpsilon:VectorMeson /Herwig/Particles/Upsilon(4S)\nset /Herwig/MatrixElements/MEUpsilon:Coupling 0.0004151809\ninsert /Herwig/MatrixElements/SimpleEE:MatrixElements 0 /Herwig/MatrixElements/MEUpsilon\n"
process += "set /Herwig/MatrixElements/MEee2gZ2qq:MaximumFlavour 4\n"
else :
process += "set /Herwig/MatrixElements/MEee2gZ2qq:MaximumFlavour 4\n"
elif(simulation=="Powheg") :
process = "set /Herwig/MatrixElements/PowhegMEee2gZ2qq:MaximumFlavour 4\n"
elif(simulation=="Matchbox" ) :
process = "do Factory:Process e- e+ -> u ubar\ndo Factory:Process e- e+ -> d dbar\ndo Factory:Process e- e+ -> c cbar\ndo Factory:Process e- e+ -> s sbar\n"
# DIS
elif(collider=="DIS") :
if(simulation=="") :
if(parameterName.find("NoME")>=0) :
- process = "set /Herwig/Shower/Evolver:MECorrMode 0"
+ process = "set /Herwig/Shower/ShowerHandler:MECorrMode 0"
parameterName=parameterName.replace("NoME-","")
else :
process = ""
elif(simulation=="Powheg") :
process = ""
elif(simulation=="Matchbox" ) :
if(parameterName.find("e-")>=0) :
process="do Factory:Process e- p -> e- j"
else :
process="do Factory:Process e+ p -> e+ j"
# LEP
elif(collider=="LEP") :
if(simulation=="") :
process=""
if(parameterName=="10") :
process="set /Herwig/MatrixElements/MEee2gZ2qq:MaximumFlavour 4"
elif(simulation=="Powheg") :
process=""
if(parameterName=="10") :
process="set /Herwig/MatrixElements/PowhegMEee2gZ2qq:MaximumFlavour 4"
elif(simulation=="Matchbox" ) :
if(parameterName=="10") :
process="do Factory:Process e- e+ -> u ubar\ndo Factory:Process e- e+ -> d dbar\ndo Factory:Process e- e+ -> c cbar\ndo Factory:Process e- e+ -> s sbar"
else :
process="do Factory:Process e- e+ -> j j"
# TVT
elif(collider=="TVT") :
process="set /Herwig/Generators/EventGenerator:EventHandler:BeamB /Herwig/Particles/pbar-\n"
if(parameterName.find("Run-II")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 1960.0\n"
elif(parameterName.find("Run-I")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 1800.0\n"
elif(parameterName.find("900")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 900.0\n"
elif(parameterName.find("630")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 630.0\n"
elif(parameterName.find("300")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 300.0\n"
if(simulation=="") :
if(parameterName.find("PromptPhoton")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaJet\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 15.\n"
elif(parameterName.find("DiPhoton-GammaGamma")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaGamma\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
parameterName=parameterName.replace("-GammaGamma","")
elif(parameterName.find("DiPhoton-GammaJet")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaJet\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
parameterName=parameterName.replace("-GammaJet","")
elif(parameterName.find("UE")>=0) :
process += "insert SimpleQCD:MatrixElements[0] MEMinBias\n"
process += "set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
process += "set /Herwig/Generators/EventGenerator:EventHandler:Cuts /Herwig/Cuts/MinBiasCuts\n"
process += "create Herwig::MPIXSecReweighter /Herwig/Generators/MPIXSecReweighter\n"
process += "insert /Herwig/Generators/EventGenerator:EventHandler:PostSubProcessHandlers 0 /Herwig/Generators/MPIXSecReweighter\n"
process += "set /Herwig/Decays/DecayHandler:LifeTimeOption 0\n"
process += "set /Herwig/Decays/DecayHandler:MaxLifeTime 10*mm\n"
elif(parameterName.find("Jets")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEQCD2to2\n"
process+="set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
if(parameterName.find("Run-II-Jets-10")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 500.*GeV\n"
elif(parameterName.find("Run-II-Jets-11")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 900.*GeV\n"
elif(parameterName.find("Run-I-Jets-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
elif(parameterName.find("Run-I-Jets-2")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 40.\n"
elif(parameterName.find("Run-I-Jets-3")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 65.\n"
elif(parameterName.find("Run-I-Jets-4")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 90.\n"
elif(parameterName.find("Run-I-Jets-5")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 160.\n"
elif(parameterName.find("Run-I-Jets-6")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 100.*GeV\n"
elif(parameterName.find("Run-I-Jets-7")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 400.*GeV\n"
elif(parameterName.find("Run-I-Jets-8")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 700.*GeV\n"
elif(parameterName.find("Run-II-Jets-0")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 15.\n"
elif(parameterName.find("Run-II-Jets-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 25.\n"
elif(parameterName.find("Run-II-Jets-2")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 40.\n"
elif(parameterName.find("Run-II-Jets-3")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 60.\n"
elif(parameterName.find("Run-II-Jets-4")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 85.\n"
elif(parameterName.find("Run-II-Jets-5")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 110.\n"
elif(parameterName.find("Run-II-Jets-6")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 160.\n"
elif(parameterName.find("Run-II-Jets-7")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 250.\n"
elif(parameterName.find("Run-II-Jets-8")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 100.*GeV\n"
elif(parameterName.find("Run-II-Jets-9")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 300.*GeV\n"
elif(parameterName.find("900-Jets-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 10.\n"
elif(parameterName.find("300-Jets-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 6.\n"
elif(parameterName.find("630-Jets-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
elif(parameterName.find("630-Jets-2")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 40.\n"
elif(parameterName.find("630-Jets-3")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 75.\n"
elif(parameterName.find("900-Jets-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 10.\n"
elif(parameterName.find("Run-I-WZ")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2W2ff\nset MEqq2W2ff:Process Electron\ninsert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Electron\n"
elif(parameterName.find("Run-I-W")>=0 or parameterName.find("Run-II-W")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2W2ff\nset MEqq2W2ff:Process Electron\n"
elif(parameterName.find("Run-I-Z")>=0 or parameterName.find("Run-II-Z-e")>=0) :
process +="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Electron\n"
elif(parameterName.find("Run-II-Z-LowMass-mu")>=0) :
process +="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Muon\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 25*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 70*GeV\n"
elif(parameterName.find("Run-II-Z-HighMass-mu")>=0) :
process +="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Muon\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 150*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 600*GeV\n"
elif(parameterName.find("Run-II-Z-mu")>=0) :
process +="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Muon\n"
elif(simulation=="Powheg") :
if(parameterName.find("Run-I-WZ")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2W2ff\nset PowhegMEqq2W2ff:Process Electron\ninsert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Electron\n"
elif(parameterName.find("Run-I-W")>=0 or parameterName.find("Run-II-W")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2W2ff\nset PowhegMEqq2W2ff:Process Electron\n"
elif(parameterName.find("Run-I-Z")>=0 or parameterName.find("Run-II-Z-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Electron\n"
elif(parameterName.find("Run-II-Z-LowMass-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Muon\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 25*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 70*GeV\n"
elif(parameterName.find("Run-II-Z-HighMass-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Muon\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 150*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 600*GeV\n"
elif(parameterName.find("Run-II-Z-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Muon\n"
elif(parameterName.find("DiPhoton-GammaGamma")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaGammaPowheg\n"
process+="set MEGammaGammaPowheg:Process GammaGamma\n"
process+="insert SimpleQCD:MatrixElements[0] MEGammaGamma\n"
process+="set MEGammaGamma:Process gg\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 5.\n"
parameterName=parameterName.replace("-GammaGamma","")
elif(parameterName.find("DiPhoton-GammaJet")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaGammaPowheg\n"
process+="set MEGammaGammaPowheg:Process VJet\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 5.\n"
parameterName=parameterName.replace("-GammaJet","")
elif(simulation=="Matchbox" ) :
if(parameterName.find("Jets")>=0) :
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 0\n"
process+="do Factory:Process p p j j\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/MaxJetPtScale\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
if(parameterName.find("Run-II-Jets-10")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 500.*GeV\n"
elif(parameterName.find("Run-II-Jets-11")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 900.*GeV\n"
elif(parameterName.find("Run-II-Jets-12")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 300.*GeV\n"
elif(parameterName.find("Run-I-Jets-1")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 20.\n"
elif(parameterName.find("Run-I-Jets-2")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 40.\n"
elif(parameterName.find("Run-I-Jets-3")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 65.\n"
elif(parameterName.find("Run-I-Jets-4")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 90.\n"
elif(parameterName.find("Run-I-Jets-5")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 160.\n"
elif(parameterName.find("Run-I-Jets-6")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 100.*GeV\n"
elif(parameterName.find("Run-I-Jets-7")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 400.*GeV\n"
elif(parameterName.find("Run-I-Jets-8")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 700.*GeV\n"
elif(parameterName.find("Run-II-Jets-0")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 15.\n"
elif(parameterName.find("Run-II-Jets-1")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 25.\n"
elif(parameterName.find("Run-II-Jets-2")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 40.\n"
elif(parameterName.find("Run-II-Jets-3")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 60.\n"
elif(parameterName.find("Run-II-Jets-4")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 85.\n"
elif(parameterName.find("Run-II-Jets-5")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 110.\n"
elif(parameterName.find("Run-II-Jets-6")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 160.\n"
elif(parameterName.find("Run-II-Jets-7")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 250.\n"
elif(parameterName.find("Run-II-Jets-8")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 100.*GeV\n"
elif(parameterName.find("Run-II-Jets-9")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 300.*GeV\n"
elif(parameterName.find("900-Jets-1")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 10.\n"
elif(parameterName.find("300-Jets-1")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 6.\n"
elif(parameterName.find("630-Jets-1")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 20.\n"
elif(parameterName.find("630-Jets-2")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 40.\n"
elif(parameterName.find("630-Jets-3")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 75.\n"
elif(parameterName.find("900-Jets-1")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 10.\n"
elif(parameterName.find("Run-I-WZ")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p pbar e+ e-\ndo Factory:Process p pbar e+ nu\ndo Factory:Process p pbar e- nu\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("Run-I-W")>=0 or parameterName.find("Run-II-W")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p pbar e+ nu\ndo Factory:Process p pbar e- nu\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("Run-I-Z")>=0 or parameterName.find("Run-II-Z-e")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p pbar e+ e-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("Run-II-Z-LowMass-mu")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p pbar mu+ mu-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 25*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 70*GeV\n"
elif(parameterName.find("Run-II-Z-HighMass-mu")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p pbar mu+ mu-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 150.*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 600*GeV\n"
elif(parameterName.find("Run-II-Z-mu")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p pbar mu+ mu-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
# Star
elif(collider=="Star" ) :
process = "set /Herwig/Decays/DecayHandler:LifeTimeOption 0\n"
process+= "set /Herwig/Decays/DecayHandler:MaxLifeTime 10*mm\n"
process+= "set /Herwig/Generators/EventGenerator:EventHandler:BeamB /Herwig/Particles/p+\n"
process+= "set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 200.0\n"
process+= "set /Herwig/Cuts/QCDCuts:X2Min 0.01\n"
if(simulation=="") :
if(parameterName.find("UE")>=0) :
process += "insert SimpleQCD:MatrixElements[0] MEMinBias\n"
process += "set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
process += "set /Herwig/Generators/EventGenerator:EventHandler:Cuts /Herwig/Cuts/MinBiasCuts\n"
process += "create Herwig::MPIXSecReweighter /Herwig/Generators/MPIXSecReweighter\n"
process += "insert /Herwig/Generators/EventGenerator:EventHandler:PostSubProcessHandlers 0 /Herwig/Generators/MPIXSecReweighter\n"
else :
process+="insert SimpleQCD:MatrixElements[0] MEQCD2to2\n"
process+="set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
if(parameterName.find("Jets-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 2.\n"
elif(parameterName.find("Jets-2")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 5.\n"
elif(parameterName.find("Jets-3")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
elif(parameterName.find("Jets-4")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 25.\n"
else :
logging.error("Star not supported for %s " % simulation)
sys.exit(1)
# ISR and SppS
elif(collider=="ISR" or collider =="SppS" ) :
process="set /Herwig/Decays/DecayHandler:LifeTimeOption 0\n"
process+="set /Herwig/Decays/DecayHandler:MaxLifeTime 10*mm\n"
if(collider=="SppS") :
process ="set /Herwig/Generators/EventGenerator:EventHandler:BeamB /Herwig/Particles/pbar-\n"
if(parameterName.find("30")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 30.4\n"
elif(parameterName.find("44")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 44.4\n"
elif(parameterName.find("53")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 53.0\n"
elif(parameterName.find("62")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 62.2\n"
elif(parameterName.find("63")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 63.0\n"
elif(parameterName.find("200")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 200.0\n"
elif(parameterName.find("500")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 500.0\n"
elif(parameterName.find("546")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 546.0\n"
elif(parameterName.find("900")>=0) :
process+="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 900.0\n"
if(simulation=="") :
process += "insert SimpleQCD:MatrixElements[0] MEMinBias\n"
process += "set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
process += "set /Herwig/Generators/EventGenerator:EventHandler:Cuts /Herwig/Cuts/MinBiasCuts\n"
process += "create Herwig::MPIXSecReweighter /Herwig/Generators/MPIXSecReweighter\n"
process += "insert /Herwig/Generators/EventGenerator:EventHandler:PostSubProcessHandlers 0 /Herwig/Generators/MPIXSecReweighter\n"
else :
logging.error(" SppS and ISR not supported for %s " % simulation)
sys.exit(1)
# LHC
elif(collider=="LHC") :
if(parameterName.find("7-")==0) :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 7000.0\n"
elif(parameterName.find("8-")==0) :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 8000.0\n"
elif(parameterName.find("13-")==0) :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 13000.0\n"
elif(parameterName.find("900")==0) :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 900.0\n"
elif(parameterName.find("2360")==0) :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 2360.0\n"
elif(parameterName.find("2760")==0) :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 2760.0\n"
else :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 7000.0\n"
if(simulation=="") :
if(parameterName.find("8-VBF")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2HiggsVBF\n"
elif(parameterName.find("VBF")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->tau-,tau+;\n"
process+="set /Herwig/Particles/tau-:Stable Stable\n"
process+="insert SimpleQCD:MatrixElements[0] MEPP2HiggsVBF\n"
elif(parameterName.find("ggHJet")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->tau-,tau+;\n"
process+="set /Herwig/Particles/tau-:Stable Stable\n"
process+="insert SimpleQCD:MatrixElements[0] MEHiggsJet\n"
elif(parameterName.find("8-ggH")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEHiggs\n"
process+="insert SimpleQCD:MatrixElements[0] MEHiggsJet\n"
process+="set MEHiggsJet:Process qqbar\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("ggH")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->tau-,tau+;\n"
process+="set /Herwig/Particles/tau-:Stable Stable\n"
process+="insert SimpleQCD:MatrixElements[0] MEHiggs\n"
process+="insert SimpleQCD:MatrixElements[0] MEHiggsJet\n"
process+="set MEHiggsJet:Process qqbar\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("PromptPhoton")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaJet\n"
if(parameterName.find("PromptPhoton-1")>=0) :
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
elif(parameterName.find("PromptPhoton-2")>=0) :
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 25.\n"
elif(parameterName.find("PromptPhoton-3")>=0) :
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 80.\n"
elif(parameterName.find("PromptPhoton-4")>=0) :
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 150.\n"
elif(parameterName.find("DiPhoton-GammaGamma")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaGamma\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
parameterName=parameterName.replace("-GammaGamma","")
elif(parameterName.find("DiPhoton-GammaJet")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaJet\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
parameterName=parameterName.replace("-GammaJet","")
elif(parameterName.find("8-WH")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2WH\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("8-ZH")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2ZH\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("WH")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->b,bbar;\n"
process+="do /Herwig/Particles/W+:SelectDecayModes W+->nu_e,e+; W+->nu_mu,mu+;\n"
process+="insert SimpleQCD:MatrixElements[0] MEPP2WH\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("ZH")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->b,bbar;\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes Z0->e-,e+; Z0->mu-,mu+;\n"
process+="insert SimpleQCD:MatrixElements[0] MEPP2ZH\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("UE")>=0) :
process += "insert SimpleQCD:MatrixElements[0] MEMinBias\n"
process += "set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
process += "set /Herwig/Generators/EventGenerator:EventHandler:Cuts /Herwig/Cuts/MinBiasCuts\n"
process += "create Herwig::MPIXSecReweighter /Herwig/Generators/MPIXSecReweighter\n"
process += "insert /Herwig/Generators/EventGenerator:EventHandler:PostSubProcessHandlers 0 /Herwig/Generators/MPIXSecReweighter\n"
if(parameterName.find("Long")>=0) :
process += "set /Herwig/Decays/DecayHandler:MaxLifeTime 100*mm\n"
elif(parameterName.find("7-Jets")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEQCD2to2\n"
process+="set MEQCD2to2:MaximumFlavour 5\n"
process+="set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
if(parameterName.find("7-Jets-0")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 5.\n"
elif(parameterName.find("7-Jets-10")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 200.*GeV\n"
elif(parameterName.find("7-Jets-11")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 600.*GeV\n"
elif(parameterName.find("7-Jets-12")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 1000.*GeV\n"
elif(parameterName.find("7-Jets-13")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 1600.*GeV\n"
elif(parameterName.find("7-Jets-14")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 2200.*GeV\n"
elif(parameterName.find("7-Jets-15")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 2800.*GeV\n"
elif(parameterName.find("7-Jets-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 10.\n"
elif(parameterName.find("7-Jets-2")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
elif(parameterName.find("7-Jets-3")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 40.\n"
elif(parameterName.find("7-Jets-4")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 70.\n"
elif(parameterName.find("7-Jets-5")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 150.\n"
elif(parameterName.find("7-Jets-6")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 200.\n"
elif(parameterName.find("7-Jets-7")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 300.\n"
elif(parameterName.find("7-Jets-8")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 500.\n"
elif(parameterName.find("7-Jets-9")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 90.*GeV\n"
elif(parameterName.find("7-Charm")>=0 or \
parameterName.find("7-Bottom")>=0) :
if(parameterName.find("7-Bottom")>=0) :
process+="cp MEHeavyQuark MEBottom\n"
process+="set MEBottom:QuarkType Bottom\n"
process+="insert SimpleQCD:MatrixElements[0] MEBottom\n"
else :
process+="cp MEHeavyQuark MECharm\n"
process+="set MECharm:QuarkType Charm\n"
process+="insert SimpleQCD:MatrixElements[0] MECharm\n"
process+="set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
if(parameterName.find("7-Heavy-0")>=0) :
if(parameterName.find("7-Bottom")>=0) :
process+="set MEBottom:Process Pair\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.\n"
elif(parameterName.find("-1")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 5.\n"
elif(parameterName.find("-2")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 20.\n"
elif(parameterName.find("-3")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 50.\n"
elif(parameterName.find("-4")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 80.\n"
elif(parameterName.find("-5")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 110.\n"
elif(parameterName.find("-6")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 90.*GeV\n"
elif(parameterName.find("-7")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 340.*GeV\n"
elif(parameterName.find("-8")>=0) :
process+="set /Herwig/Cuts/JetKtCut:MinKT 30.\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 500.*GeV\n"
elif(parameterName.find("Top-L")>=0) :
process+="set MEHeavyQuark:QuarkType Top\n"
process+="insert SimpleQCD:MatrixElements[0] MEHeavyQuark\n"
process+="do /Herwig/Particles/t:SelectDecayModes t->nu_e,e+,b; t->nu_mu,mu+,b;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("Top-SL")>=0) :
process+="set MEHeavyQuark:QuarkType Top\n"
process+="insert SimpleQCD:MatrixElements[0] MEHeavyQuark\n"
process+="set /Herwig/Particles/t:Synchronized Not_synchronized\n"
process+="set /Herwig/Particles/tbar:Synchronized Not_synchronized\n"
process+="do /Herwig/Particles/t:SelectDecayModes t->nu_e,e+,b; t->nu_mu,mu+,b;\n"
process+="do /Herwig/Particles/tbar:SelectDecayModes tbar->b,bbar,cbar; tbar->bbar,cbar,d; tbar->bbar,cbar,s; tbar->bbar,s,ubar; tbar->bbar,ubar,d;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("Top-All")>=0) :
process+="set MEHeavyQuark:QuarkType Top\n"
process+="insert SimpleQCD:MatrixElements[0] MEHeavyQuark\n"
elif(parameterName.find("WZ")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2VV\nset MEPP2VV:Process WZ\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+; /Herwig/Particles/W+/W+->nu_mu,mu+;\n"
process+="do /Herwig/Particles/W-:SelectDecayModes /Herwig/Particles/W-/W-->nu_ebar,e-; /Herwig/Particles/W-/W-->nu_mubar,mu-;\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("WW-emu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2VV\nset MEPP2VV:Process WW\n"
process+="set /Herwig/Particles/W+:Synchronized 0\n"
process+="set /Herwig/Particles/W-:Synchronized 0\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+;\n"
process+="do /Herwig/Particles/W-:SelectDecayModes /Herwig/Particles/W-/W-->nu_mubar,mu-;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("WW-ll")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2VV\nset MEPP2VV:Process WW\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+; /Herwig/Particles/W+/W+->nu_mu,mu+; /Herwig/Particles/W+/W+->nu_tau,tau+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("ZZ-ll")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2VV\nset MEPP2VV:Process ZZ\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+; /Herwig/Particles/Z0/Z0->tau-,tau+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("ZZ-lv")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2VV\nset MEPP2VV:Process ZZ\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+; /Herwig/Particles/Z0/Z0->tau-,tau+; /Herwig/Particles/Z0/Z0->nu_e,nu_ebar; /Herwig/Particles/Z0/Z0->nu_mu,nu_mubar; /Herwig/Particles/Z0/Z0->nu_tau,nu_taubar;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("W-Z-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Electron\n"
process+="insert SimpleQCD:MatrixElements[0] MEqq2W2ff\nset MEqq2W2ff:Process Electron\n"
elif(parameterName.find("W-Z-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Muon\n"
process+="insert SimpleQCD:MatrixElements[0] MEqq2W2ff\nset MEqq2W2ff:Process Muon\n"
elif(parameterName.find("W-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2W2ff\nset MEqq2W2ff:Process Electron\n"
elif(parameterName.find("W-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2W2ff\nset MEqq2W2ff:Process Muon\n"
elif(parameterName.find("Z-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Electron\n"
elif(parameterName.find("Z-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Muon\n"
elif(parameterName.find("Z-LowMass-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Electron\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 20.*GeV\nset /Herwig/Cuts/MassCut:MinM 20.*GeV\nset /Herwig/Cuts/MassCut:MaxM 70.*GeV\n"
elif(parameterName.find("Z-MedMass-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Electron\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 40.*GeV\nset /Herwig/Cuts/MassCut:MinM 40.*GeV\nset /Herwig/Cuts/MassCut:MaxM 130.*GeV\n"
elif(parameterName.find("Z-LowMass-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Muon\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 10.*GeV\nset /Herwig/Cuts/MassCut:MinM 10.*GeV\nset /Herwig/Cuts/MassCut:MaxM 70.*GeV\n"
elif(parameterName.find("W-Jet")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEWJet\nset MEWJet:WDecay Electron\n"
if(parameterName.find("W-Jet-1-e")>=0) :
process+="set /Herwig/Cuts/WBosonKtCut:MinKT 100.0*GeV\n"
parameterName=parameterName.replace("W-Jet-1-e","W-Jet-e")
elif(parameterName.find("W-Jet-2-e")>=0) :
process+="set /Herwig/Cuts/WBosonKtCut:MinKT 190.0*GeV\n"
parameterName=parameterName.replace("W-Jet-2-e","W-Jet-e")
elif(parameterName.find("W-Jet-3-e")>=0) :
process+="set /Herwig/Cuts/WBosonKtCut:MinKT 270.0*GeV\n"
parameterName=parameterName.replace("W-Jet-3-e","W-Jet-e")
elif(parameterName.find("Z-Jet")>=0) :
if(parameterName.find("-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEZJet\nset MEZJet:ZDecay Electron\n"
if(parameterName.find("Z-Jet-0-e")>=0) :
process+="set /Herwig/Cuts/ZBosonKtCut:MinKT 35.0*GeV\n"
parameterName=parameterName.replace("Z-Jet-0-e","Z-Jet-e")
elif(parameterName.find("Z-Jet-1-e")>=0) :
process+="set /Herwig/Cuts/ZBosonKtCut:MinKT 100.0*GeV\n"
parameterName=parameterName.replace("Z-Jet-1-e","Z-Jet-e")
elif(parameterName.find("Z-Jet-2-e")>=0) :
process+="set /Herwig/Cuts/ZBosonKtCut:MinKT 190.0*GeV\n"
parameterName=parameterName.replace("Z-Jet-2-e","Z-Jet-e")
elif(parameterName.find("Z-Jet-3-e")>=0) :
process+="set /Herwig/Cuts/ZBosonKtCut:MinKT 270.0*GeV\n"
parameterName=parameterName.replace("Z-Jet-3-e","Z-Jet-e")
else :
process+="insert SimpleQCD:MatrixElements[0] MEZJet\nset MEZJet:ZDecay Muon\n"
process+="set /Herwig/Cuts/ZBosonKtCut:MinKT 35.0*GeV\n"
parameterName=parameterName.replace("Z-Jet-0-mu","Z-Jet-mu")
elif(parameterName.find("WGamma")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2VGamma\nset MEPP2VGamma:Process 1\nset MEPP2VGamma:MassOption 1\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 10.\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
if(parameterName.find("-e")>=0) :
process+="do /Herwig/Particles/W+:SelectDecayModes W+->nu_e,e+;\n"
else :
process+="do /Herwig/Particles/W+:SelectDecayModes W+->nu_mu,mu+;\n"
elif(parameterName.find("ZGamma")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEPP2VGamma\nset MEPP2VGamma:Process 2\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 10.\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
if(parameterName.find("-e")>=0) :
process+="do /Herwig/Particles/Z0:SelectDecayModes Z0->e-,e+;\n"
else :
process+="do /Herwig/Particles/Z0:SelectDecayModes Z0->mu-,mu+;\n"
else :
logging.error(" Process %s not supported for internal matrix elements" % name)
sys.exit(1)
elif(simulation=="Powheg") :
if(parameterName.find("8-VBF")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2HiggsVBF\n"
elif(parameterName.find("VBF")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->tau-,tau+;\n"
process+="set /Herwig/Particles/tau-:Stable Stable\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2HiggsVBF\n"
elif(parameterName.find("ggHJet")>=0) :
logging.error(" Process %s not supported for POWHEG matrix elements" % name)
sys.exit(1)
elif(parameterName.find("8-ggH")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEHiggs\n"
elif(parameterName.find("ggH")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->tau-,tau+;\n"
process+="set /Herwig/Particles/tau-:Stable Stable\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEHiggs\n"
elif(parameterName.find("8-WH")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2WH\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("8-ZH")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2ZH\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("WH")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->b,bbar;\n"
process+="do /Herwig/Particles/W+:SelectDecayModes W+->nu_e,e+; W+->nu_mu,mu+;\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2WH\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("ZH")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->b,bbar;\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes Z0->e-,e+; Z0->mu-,mu+;\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2ZH\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 0.0*GeV\n"
elif(parameterName.find("UE")>=0) :
logging.error(" Process %s not supported for powheg matrix elements" % name)
sys.exit(1)
elif(parameterName.find("WZ")>=0) :
process+="create Herwig::HwDecayHandler /Herwig/NewPhysics/DecayHandler\n"
process+="set /Herwig/NewPhysics/DecayHandler:NewStep No\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 0 /Herwig/Particles/tau-\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 1 /Herwig/Particles/tau+\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PreCascadeHandlers 0 /Herwig/NewPhysics/DecayHandler\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2VV\nset PowhegMEPP2VV:Process WZ\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+; /Herwig/Particles/W+/W+->nu_mu,mu+;\n"
process+="do /Herwig/Particles/W-:SelectDecayModes /Herwig/Particles/W-/W-->nu_ebar,e-; /Herwig/Particles/W-/W-->nu_mubar,mu-;\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("WW-emu")>=0) :
process+="create Herwig::HwDecayHandler /Herwig/NewPhysics/DecayHandler\n"
process+="set /Herwig/NewPhysics/DecayHandler:NewStep No\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 0 /Herwig/Particles/tau-\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 1 /Herwig/Particles/tau+\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PreCascadeHandlers 0 /Herwig/NewPhysics/DecayHandler\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2VV\nset PowhegMEPP2VV:Process WW\n"
process+="set /Herwig/Particles/W+:Synchronized 0\n"
process+="set /Herwig/Particles/W-:Synchronized 0\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+;\n"
process+="do /Herwig/Particles/W-:SelectDecayModes /Herwig/Particles/W-/W-->nu_mubar,mu-;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("WW-ll")>=0) :
process+="create Herwig::HwDecayHandler /Herwig/NewPhysics/DecayHandler\n"
process+="set /Herwig/NewPhysics/DecayHandler:NewStep No\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 0 /Herwig/Particles/tau-\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 1 /Herwig/Particles/tau+\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PreCascadeHandlers 0 /Herwig/NewPhysics/DecayHandler\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2VV\nset PowhegMEPP2VV:Process WW\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+; /Herwig/Particles/W+/W+->nu_mu,mu+; /Herwig/Particles/W+/W+->nu_tau,tau+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("ZZ-ll")>=0) :
process+="create Herwig::HwDecayHandler /Herwig/NewPhysics/DecayHandler\n"
process+="set /Herwig/NewPhysics/DecayHandler:NewStep No\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 0 /Herwig/Particles/tau-\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 1 /Herwig/Particles/tau+\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PreCascadeHandlers 0 /Herwig/NewPhysics/DecayHandler\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2VV\nset PowhegMEPP2VV:Process ZZ\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+; /Herwig/Particles/Z0/Z0->tau-,tau+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("ZZ-lv")>=0) :
process+="create Herwig::HwDecayHandler /Herwig/NewPhysics/DecayHandler\n"
process+="set /Herwig/NewPhysics/DecayHandler:NewStep No\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 0 /Herwig/Particles/tau-\n"
process+="insert /Herwig/NewPhysics/DecayHandler:Excluded 1 /Herwig/Particles/tau+\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PreCascadeHandlers 0 /Herwig/NewPhysics/DecayHandler\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEPP2VV\nset PowhegMEPP2VV:Process ZZ\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+; /Herwig/Particles/Z0/Z0->tau-,tau+; /Herwig/Particles/Z0/Z0->nu_e,nu_ebar; /Herwig/Particles/Z0/Z0->nu_mu,nu_mubar; /Herwig/Particles/Z0/Z0->nu_tau,nu_taubar;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("W-Z-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Electron\n"
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2W2ff\nset PowhegMEqq2W2ff:Process Electron\n"
elif(parameterName.find("W-Z-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEqq2gZ2ff\nset MEqq2gZ2ff:Process Muon\n"
process+="insert SimpleQCD:MatrixElements[0] MEqq2W2ff\nset MEqq2W2ff:Process Muon\n"
elif(parameterName.find("W-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2W2ff\nset PowhegMEqq2W2ff:Process Electron\n"
elif(parameterName.find("W-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2W2ff\nset PowhegMEqq2W2ff:Process Muon\n"
elif(parameterName.find("Z-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Electron\n"
elif(parameterName.find("Z-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Muon\n"
elif(parameterName.find("Z-LowMass-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Electron\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 20.*GeV\nset /Herwig/Cuts/MassCut:MinM 20.*GeV\nset /Herwig/Cuts/MassCut:MaxM 70.*GeV\n"
elif(parameterName.find("Z-MedMass-e")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Electron\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 40.*GeV\nset /Herwig/Cuts/MassCut:MinM 40.*GeV\nset /Herwig/Cuts/MassCut:MaxM 130.*GeV\n"
elif(parameterName.find("Z-LowMass-mu")>=0) :
process+="insert SimpleQCD:MatrixElements[0] PowhegMEqq2gZ2ff\nset PowhegMEqq2gZ2ff:Process Muon\n"
process+="set /Herwig/Cuts/QCDCuts:MHatMin 10.*GeV\nset /Herwig/Cuts/MassCut:MinM 10.*GeV\nset /Herwig/Cuts/MassCut:MaxM 70.*GeV\n"
elif(parameterName.find("DiPhoton-GammaGamma")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaGammaPowheg\n"
process+="set MEGammaGammaPowheg:Process GammaGamma\n"
process+="insert SimpleQCD:MatrixElements[0] MEGammaGamma\n"
process+="set MEGammaGamma:Process gg\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 5.\n"
parameterName=parameterName.replace("-GammaGamma","")
elif(parameterName.find("DiPhoton-GammaJet")>=0) :
process+="insert SimpleQCD:MatrixElements[0] MEGammaGammaPowheg\n"
process+="set MEGammaGammaPowheg:Process VJet\n"
process+="set /Herwig/Cuts/PhotonKtCut:MinKT 5.\n"
process+="set /Herwig/Cuts/JetKtCut:MinKT 5.\n"
parameterName=parameterName.replace("-GammaJet","")
else :
logging.error(" Process %s not supported for internal POWHEG matrix elements" % name)
sys.exit(1)
elif(simulation=="Matchbox" ) :
if(parameterName.find("8-VBF")>=0) :
parameters["nlo"] = "read Matchbox/VBFNLO.in\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 3\n"
process+="insert Factory:DiagramGenerator:RestrictLines 0 /Herwig/Particles/Z0\n"
process+="insert Factory:DiagramGenerator:RestrictLines 0 /Herwig/Particles/W+\n"
process+="insert Factory:DiagramGenerator:RestrictLines 0 /Herwig/Particles/W-\n"
process+="insert Factory:DiagramGenerator:RestrictLines 0 /Herwig/Particles/gamma\n"
process+="do Factory:DiagramGenerator:TimeLikeRange 0 0\n"
process+="do Factory:Process p p h0 j j\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 125.7\n"
if(parameterName.find("GammaGamma")>=0) :
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("VBF")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->tau-,tau+;\n"
process+="set /Herwig/Particles/tau-:Stable Stable\n"
parameters["nlo"] = "read Matchbox/VBFNLO.in\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 3\n"
process+="insert Factory:DiagramGenerator:RestrictLines 0 /Herwig/Particles/Z0\n"
process+="insert Factory:DiagramGenerator:RestrictLines 0 /Herwig/Particles/W+\n"
process+="insert Factory:DiagramGenerator:RestrictLines 0 /Herwig/Particles/W-\n"
process+="insert Factory:DiagramGenerator:RestrictLines 0 /Herwig/Particles/gamma\n"
process+="do Factory:DiagramGenerator:TimeLikeRange 0 0\n"
process+="do Factory:Process p p h0 j j\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 125.7\n"
elif(parameterName.find("ggHJet")>=0) :
parameters["nlo"] = "read Matchbox/MadGraph-GoSam.in\nread Matchbox/HiggsEffective.in\n"
process+="do /Herwig/Particles/h0:SelectDecayModes h0->tau-,tau+;\n"
process+="set /Herwig/Particles/tau-:Stable Stable\n"
process+="set Factory:OrderInAlphaS 3\nset Factory:OrderInAlphaEW 1\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="do Factory:Process p p h0 j\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 20.\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 125.7\n"
elif(parameterName.find("8-ggH")>=0) :
parameters["nlo"] = "read Matchbox/MadGraph-GoSam.in\nread Matchbox/HiggsEffective.in\n"
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 1\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="do Factory:Process p p h0\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 125.7\n"
if(parameterName.find("GammaGamma")>=0) :
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("ggH")>=0) :
parameters["nlo"] = "read Matchbox/MadGraph-GoSam.in\nread Matchbox/HiggsEffective.in\n"
process+="do /Herwig/Particles/h0:SelectDecayModes h0->tau-,tau+;\n"
process+="set /Herwig/Particles/tau-:Stable Stable\n"
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 1\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="do Factory:Process p p h0\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 125.7\n"
elif(parameterName.find("8-WH")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="do Factory:Process p p W+ h0\n"
process+="do Factory:Process p p W- h0\n"
process+="set /Herwig/Particles/W+:HardProcessWidth 0.\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 125.7\n"
if(parameterName.find("GammaGamma")>=0) :
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("8-ZH")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="set /Herwig/Particles/Z0:HardProcessWidth 0.\n"
process+="do Factory:Process p p Z0 h0\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 125.7\n"
if(parameterName.find("GammaGamma")>=0) :
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("WH")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->b,bbar;\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 3\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="do Factory:Process p p e+ nu h0\n"
process+="do Factory:Process p p e- nu h0\n"
process+="do Factory:Process p p mu+ nu h0\n"
process+="do Factory:Process p p mu- nu h0\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("ZH")>=0) :
process+="do /Herwig/Particles/h0:SelectDecayModes h0->b,bbar;\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 3\n"
process+="set /Herwig/Particles/h0:HardProcessWidth 0.\n"
process+="do Factory:Process p p e+ e- h0\n"
process+="do Factory:Process p p mu+ mu- h0\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("UE")>=0) :
logging.error(" Process %s not supported for Matchbox matrix elements" % name)
sys.exit(1)
elif(parameterName.find("7-Jets")>=0) :
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 0\n"
process+="do Factory:Process p p j j\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/MaxJetPtScale\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
if(parameterName.find("7-Jets-0")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 5.\n"
elif(parameterName.find("7-Jets-10")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 20.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 15.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 200.*GeV\n"
elif(parameterName.find("7-Jets-11")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 20.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 15.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 600.*GeV\n"
elif(parameterName.find("7-Jets-12")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 20.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 15.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 1000.*GeV\n"
elif(parameterName.find("7-Jets-13")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 20.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 15.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 1600.*GeV\n"
elif(parameterName.find("7-Jets-14")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 20.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 15.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 2200.*GeV\n"
elif(parameterName.find("7-Jets-15")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 20.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 15.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 2800.*GeV\n"
elif(parameterName.find("7-Jets-1")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 10.\n"
elif(parameterName.find("7-Jets-2")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 20.\n"
elif(parameterName.find("7-Jets-3")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 40.\n"
elif(parameterName.find("7-Jets-4")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 70.\n"
elif(parameterName.find("7-Jets-5")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 150.\n"
elif(parameterName.find("7-Jets-6")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 200.\n"
elif(parameterName.find("7-Jets-7")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 300.\n"
elif(parameterName.find("7-Jets-8")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 500.\n"
elif(parameterName.find("7-Jets-9")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 20.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 15.*GeV\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 90.*GeV\n"
elif(parameterName.find("7-Charm")>=0 or \
parameterName.find("7-Bottom")>=0) :
parameters["bscheme"]="read Matchbox/FourFlavourScheme.in"
process+="set /Herwig/Particles/b:HardProcessMass 4.2*GeV\n"
process+="set /Herwig/Particles/bbar:HardProcessMass 4.2*GeV\n"
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 0\n"
if(parameterName.find("7-Bottom")>=0) :
process+="do Factory:Process p p b bbar\n"
else:
process+="do Factory:Process p p c cbar\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/MaxJetPtScale\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/UnderlyingEvent/MPIHandler:IdenticalToUE 0\n"
if(parameterName.find("-0")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 0.\n"
elif(parameterName.find("-1")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 5.\n"
elif(parameterName.find("-2")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 20.\n"
elif(parameterName.find("-3")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 50.\n"
elif(parameterName.find("-4")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 80.\n"
elif(parameterName.find("-5")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 110.\n"
elif(parameterName.find("-6")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 90.*GeV\n"
elif(parameterName.find("-7")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 340.*GeV\n"
elif(parameterName.find("-8")>=0) :
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 25.\n"
process+="create ThePEG::JetPairRegion /Herwig/Cuts/JetPairMass JetCuts.so\n"
process+="set /Herwig/Cuts/JetPairMass:FirstRegion /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/JetPairMass:SecondRegion /Herwig/Cuts/SecondJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetPairRegions 0 /Herwig/Cuts/JetPairMass\n"
process+="set /Herwig/Cuts/JetPairMass:MassMin 500.*GeV\n"
elif(parameterName.find("Top-L")>=0) :
process+="set /Herwig/Particles/t:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/tbar:HardProcessWidth 0.*GeV\n"
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 0\n"
process+="do Factory:Process p p t tbar\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/TopPairMTScale\n"
process+="do /Herwig/Particles/t:SelectDecayModes t->nu_e,e+,b; t->nu_mu,mu+,b;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("Top-SL")>=0) :
process+="set /Herwig/Particles/t:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/tbar:HardProcessWidth 0.*GeV\n"
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 0\n"
process+="do Factory:Process p p t tbar\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/TopPairMTScale\n"
process+="set /Herwig/Particles/t:Synchronized Not_synchronized\n"
process+="set /Herwig/Particles/tbar:Synchronized Not_synchronized\n"
process+="do /Herwig/Particles/t:SelectDecayModes t->nu_e,e+,b; t->nu_mu,mu+,b;\n"
process+="do /Herwig/Particles/tbar:SelectDecayModes tbar->b,bbar,cbar; tbar->bbar,cbar,d; tbar->bbar,cbar,s; tbar->bbar,s,ubar; tbar->bbar,ubar,d;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
elif(parameterName.find("Top-All")>=0) :
process+="set /Herwig/Particles/t:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/tbar:HardProcessWidth 0.*GeV\n"
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 0\n"
process+="do Factory:Process p p t tbar\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/TopPairMTScale\n"
elif(parameterName.find("WZ")>=0) :
process+="set /Herwig/Particles/W+:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/W-:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/Z0:HardProcessWidth 0.*GeV\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p W+ Z0\ndo Factory:Process p p W- Z0\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 171.6*GeV\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+; /Herwig/Particles/W+/W+->nu_mu,mu+;\n"
process+="do /Herwig/Particles/W-:SelectDecayModes /Herwig/Particles/W-/W-->nu_ebar,e-; /Herwig/Particles/W-/W-->nu_mubar,mu-;\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("WW-emu")>=0) :
process+="set /Herwig/Particles/W+:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/W-:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/Z0:HardProcessWidth 0.*GeV\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p W+ W-\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 160.8*GeV\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/Particles/W+:Synchronized 0\n"
process+="set /Herwig/Particles/W-:Synchronized 0\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+;\n"
process+="do /Herwig/Particles/W-:SelectDecayModes /Herwig/Particles/W-/W-->nu_mubar,mu-;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("WW-ll")>=0) :
process+="set /Herwig/Particles/W+:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/W-:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/Z0:HardProcessWidth 0.*GeV\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p W+ W-\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 160.8*GeV\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="do /Herwig/Particles/W+:SelectDecayModes /Herwig/Particles/W+/W+->nu_e,e+; /Herwig/Particles/W+/W+->nu_mu,mu+; /Herwig/Particles/W+/W+->nu_tau,tau+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("ZZ-ll")>=0) :
process+="set /Herwig/Particles/W+:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/W-:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/Z0:HardProcessWidth 0.*GeV\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p Z0 Z0\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 182.2*GeV\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+; /Herwig/Particles/Z0/Z0->tau-,tau+;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("ZZ-lv")>=0) :
process+="set /Herwig/Particles/W+:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/W-:HardProcessWidth 0.*GeV\n"
process+="set /Herwig/Particles/Z0:HardProcessWidth 0.*GeV\n"
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p Z0 Z0\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 182.2*GeV\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="do /Herwig/Particles/Z0:SelectDecayModes /Herwig/Particles/Z0/Z0->e-,e+; /Herwig/Particles/Z0/Z0->mu-,mu+; /Herwig/Particles/Z0/Z0->tau-,tau+; /Herwig/Particles/Z0/Z0->nu_e,nu_ebar; /Herwig/Particles/Z0/Z0->nu_mu,nu_mubar; /Herwig/Particles/Z0/Z0->nu_tau,nu_taubar;\n"
process+="create Herwig::BranchingRatioReweighter /Herwig/Generators/BRReweighter\n"
process+="insert /Herwig/Generators/EventGenerator:EventHandler:PostHadronizationHandlers 0 /Herwig/Generators/BRReweighter\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("W-Z-e")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\n"
process+="do Factory:Process p p e+ e-\ndo Factory:Process p p e+ nu\ndo Factory:Process p p e- nu\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("W-Z-mu")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\n"
process+="do Factory:Process p p mu+ mu-\ndo Factory:Process p p mu+ nu\ndo Factory:Process p p mu- nu\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("W-e")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p e+ nu\ndo Factory:Process p p e- nu\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("W-mu")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p mu+ nu\ndo Factory:Process p p mu- nu\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("Z-e")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p e+ e-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("Z-mu")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p mu+ mu-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("Z-jj")>=0) :
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 2\n"
process+="do Factory:Process p p e+ e- j j\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 40.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("Z-LowMass-e")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p e+ e-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 20*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 70*GeV\n"
elif(parameterName.find("Z-MedMass-e")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p e+ e-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 40*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 130*GeV\n"
elif(parameterName.find("Z-LowMass-mu")>=0) :
process+="set Factory:OrderInAlphaS 0\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p mu+ mu-\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/LeptonPairMassScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 10*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 70*GeV\n"
elif(parameterName.find("W-Jet")>=0) :
process+="set Factory:OrderInAlphaS 1\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p e+ nu j\ndo Factory:Process p p e- nu j\n\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/HTScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
if(parameterName.find("W-Jet-1-e")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 100.*GeV\n"
parameterName=parameterName.replace("W-Jet-1-e","W-Jet-e")
elif(parameterName.find("W-Jet-2-e")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 190.0*GeV\n"
parameterName=parameterName.replace("W-Jet-2-e","W-Jet-e")
elif(parameterName.find("W-Jet-3-e")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 270.0*GeV\n"
parameterName=parameterName.replace("W-Jet-3-e","W-Jet-e")
elif(parameterName.find("Z-Jet")>=0) :
process+="set Factory:OrderInAlphaS 1\nset Factory:OrderInAlphaEW 2\n"
if(parameterName.find("-e")>=0) :
process+="do Factory:Process p p e+ e- j\n"
if(parameterName.find("Z-Jet-0-e")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 35.*GeV\n"
parameterName=parameterName.replace("Z-Jet-0-e","Z-Jet-e")
elif(parameterName.find("Z-Jet-1-e")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 100.*GeV\n"
parameterName=parameterName.replace("Z-Jet-1-e","Z-Jet-e")
elif(parameterName.find("Z-Jet-2-e")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 190.0*GeV\n"
parameterName=parameterName.replace("Z-Jet-2-e","Z-Jet-e")
elif(parameterName.find("Z-Jet-3-e")>=0) :
process+="set /Herwig/Cuts/FirstJet:PtMin 270.0*GeV\n"
parameterName=parameterName.replace("Z-Jet-3-e","Z-Jet-e")
else :
process+="do Factory:Process p p mu+ mu- j\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 35.*GeV\n"
parameterName=parameterName.replace("Z-Jet-0-mu","Z-Jet-mu")
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
process+="set Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/HTScale\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
elif(parameterName.find("Z-bb")>=0) :
parameters["bscheme"]="read Matchbox/FourFlavourScheme.in"
process+="set /Herwig/Particles/b:HardProcessMass 4.2*GeV\nset /Herwig/Particles/bbar:HardProcessMass 4.2*GeV\n"
process+="set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p e+ e- b bbar\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 91.2*GeV\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 66*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 116*GeV\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/SecondJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 18.*GeV\n"
process+="set /Herwig/Cuts/SecondJet:PtMin 15.*GeV\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
elif(parameterName.find("Z-b")>=0) :
process+="do Factory:StartParticleGroup bjet\n"
process+="insert Factory:ParticleGroup 0 /Herwig/Particles/b\n"
process+="insert Factory:ParticleGroup 0 /Herwig/Particles/bbar\n"
process+="do Factory:EndParticleGroup\n"
process+="set Factory:OrderInAlphaS 1\nset Factory:OrderInAlphaEW 2\ndo Factory:Process p p e+ e- bjet\n"
process+="set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 91.2*GeV\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 15.*GeV\n"
elif(parameterName.find("W-b")>=0) :
parameters["bscheme"]="read Matchbox/FourFlavourScheme.in"
process += "set /Herwig/Particles/b:HardProcessMass 4.2*GeV\nset /Herwig/Particles/bbar:HardProcessMass 4.2*GeV\n"
process += "set Factory:OrderInAlphaS 2\nset Factory:OrderInAlphaEW 2\n"
process += "do Factory:Process p p e+ nu b bbar\ndo Factory:Process p p e- nu b bbar\n"
process += "do Factory:Process p p mu+ nu b bbar\ndo Factory:Process p p mu- nu b bbar\n"
process += "set /Herwig/MatrixElements/Matchbox/Scales/FixedScale:FixedScale 80.4*GeV\nset Factory:ScaleChoice /Herwig/MatrixElements/Matchbox/Scales/FixedScale\n"
process+="set /Herwig/Cuts/Cuts:JetFinder /Herwig/Cuts/JetFinder\n"
process+="insert /Herwig/Cuts/Cuts:MultiCuts 0 /Herwig/Cuts/JetCuts\n"
process+="insert /Herwig/Cuts/JetCuts:JetRegions 0 /Herwig/Cuts/FirstJet\n"
process+="set /Herwig/Cuts/FirstJet:PtMin 30.*GeV\n"
process+="set /Herwig/Cuts/LeptonPairMassCut:MinMass 60*GeV\nset /Herwig/Cuts/LeptonPairMassCut:MaxMass 120*GeV\n"
else :
logging.error(" Process %s not supported for Matchbox matrix elements" % name)
sys.exit(1)
# LHC-GammaGamma
elif(collider=="LHC-GammaGamma" ) :
if(parameterName.find("-7-")>=0) :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 7000.0\n"
elif(parameterName.find("-8-")>=0) :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 8000.0\n"
else :
process="set /Herwig/Generators/EventGenerator:EventHandler:LuminosityFunction:Energy 7000.0\n"
if(simulation=="") :
if(parameterName.find("7")>=0) :
process += "insert SimpleQCD:MatrixElements 0 /Herwig/MatrixElements/MEgg2ff\n"
process += "set /Herwig/MatrixElements/MEgg2ff:Process Muon\n"
else :
logging.error(" Process %s not supported for default matrix elements" % name)
sys.exit(1)
else :
logging.error("LHC-GammaGamma not supported for %s " % simulation)
sys.exit(1)
parameters['parameterFile'] = os.path.join(collider,collider+"-"+parameterName+".in")
parameters['runname'] = name
parameters['process'] = process
# write the file
if(simulation=="Matchbox" ) :
with open(os.path.join("Rivet",name+".in") ,'w') as f:
f.write( template.substitute(parameters))
else :
with open(os.path.join("Rivet",name+".in") ,'w') as f:
f.write( template.substitute(parameters))
diff --git a/src/Matchbox/Powheg-DefaultShower.in.in b/src/Matchbox/Powheg-DefaultShower.in.in
--- a/src/Matchbox/Powheg-DefaultShower.in.in
+++ b/src/Matchbox/Powheg-DefaultShower.in.in
@@ -1,32 +1,32 @@
# -*- ThePEG-repository -*-
read Matchbox/Powheg.in
-set /Herwig/Shower/ShowerHandler:HardVetoReadOption PrimaryCollision
-set /Herwig/Shower/ShowerHandler:MECorrMode No
-set /Herwig/Shower/ShowerHandler:SpinCorrelations No
+set /Herwig/Shower/PowhegShowerHandler:HardVetoReadOption PrimaryCollision
+set /Herwig/Shower/PowhegShowerHandler:MECorrMode No
+set /Herwig/Shower/PowhegShowerHandler:SpinCorrelations No
set /Herwig/Shower/KinematicsReconstructor:InitialStateReconOption SofterFraction
set /Herwig/Shower/PartnerFinder:PartnerMethod 0
set /Herwig/Shower/PartnerFinder:ScaleChoice 0
set /Herwig/Shower/PowhegShowerHandler:RestrictPhasespace On
set /Herwig/Shower/PowhegShowerHandler:MaxPtIsMuF Yes
set /Herwig/Shower/PowhegShowerHandler:HardScaleProfile NULL
cd /Herwig/EventHandlers
set EventHandler:CascadeHandler /Herwig/Shower/PowhegShowerHandler
cd /Herwig/Shower
set PowhegShowerHandler:Factory /Herwig/MatrixElements/Matchbox/Factory
-set ShowerHandler:HardEmissionMode FullPOWHEG
+set PowhegShowerHandler:HardEmissionMode FullPOWHEG
# tunes
read Matchbox/Powheg-Default-HardAlphaSTune.in
cd /Herwig/Analysis
@CREATE_RIVET@ ThePEG::RivetAnalysis Rivet RivetAnalysis.so
@CREATE_HEPMC@ ThePEG::HepMCFile HepMC HepMCAnalysis.so
diff --git a/src/defaults/Shower.in b/src/defaults/Shower.in
--- a/src/defaults/Shower.in
+++ b/src/defaults/Shower.in
@@ -1,288 +1,296 @@
# -*- ThePEG-repository -*-
############################################################
# Setup of default parton shower
#
# Useful switches for users are marked near the top of
# this file.
#
# Don't edit this file directly, but reset the switches
# in your own input files!
############################################################
library HwMPI.so
library HwShower.so
library HwMatching.so
mkdir /Herwig/Shower
cd /Herwig/Shower
create Herwig::QTildeShowerHandler ShowerHandler
newdef ShowerHandler:MPIHandler /Herwig/UnderlyingEvent/MPIHandler
newdef ShowerHandler:RemDecayer /Herwig/Partons/RemnantDecayer
# use LO PDFs for Shower, can be changed later
newdef ShowerHandler:PDFA /Herwig/Partons/ShowerLOPDF
newdef ShowerHandler:PDFB /Herwig/Partons/ShowerLOPDF
newdef ShowerHandler:PDFARemnant /Herwig/Partons/RemnantPDF
newdef ShowerHandler:PDFBRemnant /Herwig/Partons/RemnantPDF
#####################################
# initial setup, don't change these!
#####################################
create Herwig::SplittingGenerator SplittingGenerator
create Herwig::ShowerAlphaQCD AlphaQCD
create Herwig::ShowerAlphaQED AlphaQED
create Herwig::QTildeModel ShowerModel
create Herwig::QTildeFinder PartnerFinder
newdef PartnerFinder:PartnerMethod 1
newdef PartnerFinder:ScaleChoice 1
create Herwig::QTildeReconstructor KinematicsReconstructor
newdef KinematicsReconstructor:ReconstructionOption Colour3
newdef KinematicsReconstructor:InitialStateReconOption SofterFraction
newdef KinematicsReconstructor:InitialInitialBoostOption LongTransBoost
newdef /Herwig/Partons/RemnantDecayer:AlphaS AlphaQCD
newdef /Herwig/Partons/RemnantDecayer:AlphaEM AlphaQED
newdef ShowerModel:PartnerFinder PartnerFinder
newdef ShowerModel:KinematicsReconstructor KinematicsReconstructor
newdef ShowerHandler:ShowerModel ShowerModel
newdef ShowerHandler:SplittingGenerator SplittingGenerator
newdef ShowerHandler:SpinCorrelations Yes
newdef ShowerHandler:SoftCorrelations Singular
##################################################################
# Intrinsic pT
#
# Recommended:
# 1.9 GeV for Tevatron W/Z production.
# 2.1 GeV for LHC W/Z production at 10 TeV
# 2.2 GeV for LHC W/Z production at 14 TeV
#
# Set all parameters to 0 to disable
##################################################################
newdef ShowerHandler:IntrinsicPtGaussian 1.3*GeV
newdef ShowerHandler:IntrinsicPtBeta 0
newdef ShowerHandler:IntrinsicPtGamma 0*GeV
newdef ShowerHandler:IntrinsicPtIptmax 0*GeV
#############################################################
-# Main control switches for the parton shower.
-#############################################################
-newdef ShowerHandler:DoISR Yes
-newdef ShowerHandler:DoFSR Yes
-#############################################################
# Set up truncated shower handler.
#############################################################
create Herwig::PowhegShowerHandler PowhegShowerHandler
set PowhegShowerHandler:MPIHandler /Herwig/UnderlyingEvent/MPIHandler
set PowhegShowerHandler:RemDecayer /Herwig/Partons/RemnantDecayer
newdef PowhegShowerHandler:PDFA /Herwig/Partons/ShowerLOPDF
newdef PowhegShowerHandler:PDFB /Herwig/Partons/ShowerLOPDF
newdef PowhegShowerHandler:PDFARemnant /Herwig/Partons/RemnantPDF
newdef PowhegShowerHandler:PDFBRemnant /Herwig/Partons/RemnantPDF
-
-#############################################################
-
+newdef PowhegShowerHandler:MPIHandler /Herwig/UnderlyingEvent/MPIHandler
+newdef PowhegShowerHandler:RemDecayer /Herwig/Partons/RemnantDecayer
+newdef PowhegShowerHandler:PDFA /Herwig/Partons/ShowerLOPDF
+newdef PowhegShowerHandler:PDFB /Herwig/Partons/ShowerLOPDF
+newdef PowhegShowerHandler:PDFARemnant /Herwig/Partons/RemnantPDF
+newdef PowhegShowerHandler:PDFBRemnant /Herwig/Partons/RemnantPDF
+newdef PowhegShowerHandler:ShowerModel ShowerModel
+newdef PowhegShowerHandler:SplittingGenerator SplittingGenerator
+newdef PowhegShowerHandler:Interactions QCDandQED
+newdef PowhegShowerHandler:SpinCorrelations Yes
+newdef PowhegShowerHandler:SoftCorrelations Singular
+newdef PowhegShowerHandler:IntrinsicPtGaussian 1.3*GeV
+newdef PowhegShowerHandler:IntrinsicPtBeta 0
+newdef PowhegShowerHandler:IntrinsicPtGamma 0*GeV
+newdef PowhegShowerHandler:IntrinsicPtIptmax 0*GeV
+newdef PowhegShowerHandler:ReconstructionOption OffShell3
#############################################################
# End of interesting user servicable section.
#
# Anything that follows below should only be touched if you
# know what you're doing.
#
# Really.
#############################################################
#
# a few default values
newdef ShowerHandler:MECorrMode 1
newdef ShowerHandler:ReconstructionOption OffShell3
newdef AlphaQCD:ScaleFactor 1.0
newdef AlphaQCD:NPAlphaS 2
newdef AlphaQCD:Qmin 0.935
newdef AlphaQCD:NumberOfLoops 2
newdef AlphaQCD:InputOption 1
newdef AlphaQCD:AlphaMZ 0.134
#
#
# Lets set up all the splittings
create Herwig::HalfHalfOneSplitFn QtoQGammaSplitFn
set QtoQGammaSplitFn:InteractionType QED
set QtoQGammaSplitFn:ColourStructure ChargedChargedNeutral
set QtoQGammaSplitFn:AngularOrdered Yes
create Herwig::HalfHalfOneSplitFn QtoQGSplitFn
newdef QtoQGSplitFn:InteractionType QCD
newdef QtoQGSplitFn:ColourStructure TripletTripletOctet
set QtoQGSplitFn:AngularOrdered Yes
create Herwig::OneOneOneSplitFn GtoGGSplitFn
newdef GtoGGSplitFn:InteractionType QCD
newdef GtoGGSplitFn:ColourStructure OctetOctetOctet
set GtoGGSplitFn:AngularOrdered Yes
create Herwig::OneHalfHalfSplitFn GtoQQbarSplitFn
newdef GtoQQbarSplitFn:InteractionType QCD
newdef GtoQQbarSplitFn:ColourStructure OctetTripletTriplet
set GtoQQbarSplitFn:AngularOrdered No
create Herwig::OneHalfHalfSplitFn GammatoQQbarSplitFn
newdef GammatoQQbarSplitFn:InteractionType QED
newdef GammatoQQbarSplitFn:ColourStructure NeutralChargedCharged
set GammatoQQbarSplitFn:AngularOrdered No
create Herwig::HalfOneHalfSplitFn QtoGQSplitFn
newdef QtoGQSplitFn:InteractionType QCD
newdef QtoGQSplitFn:ColourStructure TripletOctetTriplet
set QtoGQSplitFn:AngularOrdered Yes
create Herwig::HalfOneHalfSplitFn QtoGammaQSplitFn
newdef QtoGammaQSplitFn:InteractionType QED
newdef QtoGammaQSplitFn:ColourStructure ChargedNeutralCharged
set QtoGammaQSplitFn:AngularOrdered Yes
#
# Now the Sudakovs
create Herwig::QTildeSudakov SudakovCommon
newdef SudakovCommon:Alpha AlphaQCD
newdef SudakovCommon:cutoffKinScale 0.0*GeV
newdef SudakovCommon:PDFmax 1.0
newdef SudakovCommon:CutOffOption pT
newdef SudakovCommon:pTmin 1.67*GeV
cp SudakovCommon QtoQGSudakov
newdef QtoQGSudakov:SplittingFunction QtoQGSplitFn
newdef QtoQGSudakov:PDFmax 1.9
cp SudakovCommon QtoQGammaSudakov
set QtoQGammaSudakov:SplittingFunction QtoQGammaSplitFn
set QtoQGammaSudakov:Alpha AlphaQED
set QtoQGammaSudakov:PDFmax 1.9
cp QtoQGammaSudakov LtoLGammaSudakov
cp SudakovCommon GtoGGSudakov
newdef GtoGGSudakov:SplittingFunction GtoGGSplitFn
newdef GtoGGSudakov:PDFmax 2.0
cp SudakovCommon GtoQQbarSudakov
newdef GtoQQbarSudakov:SplittingFunction GtoQQbarSplitFn
newdef GtoQQbarSudakov:PDFmax 120.0
cp SudakovCommon GammatoQQbarSudakov
newdef GammatoQQbarSudakov:SplittingFunction GammatoQQbarSplitFn
newdef GammatoQQbarSudakov:PDFmax 120.0
cp SudakovCommon GtobbbarSudakov
newdef GtobbbarSudakov:SplittingFunction GtoQQbarSplitFn
newdef GtobbbarSudakov:PDFmax 40000.0
cp SudakovCommon GtoccbarSudakov
newdef GtoccbarSudakov:SplittingFunction GtoQQbarSplitFn
newdef GtoccbarSudakov:PDFmax 2000.0
cp SudakovCommon QtoGQSudakov
newdef QtoGQSudakov:SplittingFunction QtoGQSplitFn
cp SudakovCommon QtoGammaQSudakov
newdef QtoGammaQSudakov:SplittingFunction QtoGammaQSplitFn
cp SudakovCommon utoGuSudakov
newdef utoGuSudakov:SplittingFunction QtoGQSplitFn
newdef utoGuSudakov:PDFFactor OverOneMinusZ
newdef utoGuSudakov:PDFmax 5.0
cp SudakovCommon dtoGdSudakov
newdef dtoGdSudakov:SplittingFunction QtoGQSplitFn
newdef dtoGdSudakov:PDFFactor OverOneMinusZ
#
# Now add the final splittings
#
do SplittingGenerator:AddFinalSplitting u->u,g; QtoQGSudakov
do SplittingGenerator:AddFinalSplitting d->d,g; QtoQGSudakov
do SplittingGenerator:AddFinalSplitting s->s,g; QtoQGSudakov
do SplittingGenerator:AddFinalSplitting c->c,g; QtoQGSudakov
do SplittingGenerator:AddFinalSplitting b->b,g; QtoQGSudakov
do SplittingGenerator:AddFinalSplitting t->t,g; QtoQGSudakov
#
do SplittingGenerator:AddFinalSplitting g->g,g; GtoGGSudakov
#
do SplittingGenerator:AddFinalSplitting g->u,ubar; GtoQQbarSudakov
do SplittingGenerator:AddFinalSplitting g->d,dbar; GtoQQbarSudakov
do SplittingGenerator:AddFinalSplitting g->s,sbar; GtoQQbarSudakov
do SplittingGenerator:AddFinalSplitting g->c,cbar; GtoccbarSudakov
do SplittingGenerator:AddFinalSplitting g->b,bbar; GtobbbarSudakov
do SplittingGenerator:AddFinalSplitting g->t,tbar; GtoQQbarSudakov
#
do SplittingGenerator:AddFinalSplitting gamma->u,ubar; GammatoQQbarSudakov
do SplittingGenerator:AddFinalSplitting gamma->d,dbar; GammatoQQbarSudakov
do SplittingGenerator:AddFinalSplitting gamma->s,sbar; GammatoQQbarSudakov
do SplittingGenerator:AddFinalSplitting gamma->c,cbar; GammatoQQbarSudakov
do SplittingGenerator:AddFinalSplitting gamma->b,bbar; GammatoQQbarSudakov
do SplittingGenerator:AddFinalSplitting gamma->t,tbar; GammatoQQbarSudakov
do SplittingGenerator:AddFinalSplitting gamma->e-,e+; GammatoQQbarSudakov
do SplittingGenerator:AddFinalSplitting gamma->mu-,mu+; GammatoQQbarSudakov
do SplittingGenerator:AddFinalSplitting gamma->tau-,tau+; GammatoQQbarSudakov
#
do SplittingGenerator:AddFinalSplitting u->u,gamma; QtoQGammaSudakov
do SplittingGenerator:AddFinalSplitting d->d,gamma; QtoQGammaSudakov
do SplittingGenerator:AddFinalSplitting s->s,gamma; QtoQGammaSudakov
do SplittingGenerator:AddFinalSplitting c->c,gamma; QtoQGammaSudakov
do SplittingGenerator:AddFinalSplitting b->b,gamma; QtoQGammaSudakov
do SplittingGenerator:AddFinalSplitting t->t,gamma; QtoQGammaSudakov
do SplittingGenerator:AddFinalSplitting e-->e-,gamma; LtoLGammaSudakov
do SplittingGenerator:AddFinalSplitting mu-->mu-,gamma; LtoLGammaSudakov
do SplittingGenerator:AddFinalSplitting tau-->tau-,gamma; LtoLGammaSudakov
#
# Now lets add the initial splittings. Remember the form a->b,c; means
# that particle a is the particle given and we backward branch to
# particle b which is initial state and particle c which is final state
#
do SplittingGenerator:AddInitialSplitting u->u,g; QtoQGSudakov
do SplittingGenerator:AddInitialSplitting d->d,g; QtoQGSudakov
do SplittingGenerator:AddInitialSplitting s->s,g; QtoQGSudakov
do SplittingGenerator:AddInitialSplitting c->c,g; QtoQGSudakov
do SplittingGenerator:AddInitialSplitting b->b,g; QtoQGSudakov
do SplittingGenerator:AddInitialSplitting u->u,gamma; QtoQGammaSudakov
do SplittingGenerator:AddInitialSplitting d->d,gamma; QtoQGammaSudakov
do SplittingGenerator:AddInitialSplitting s->s,gamma; QtoQGammaSudakov
do SplittingGenerator:AddInitialSplitting c->c,gamma; QtoQGammaSudakov
do SplittingGenerator:AddInitialSplitting b->b,gamma; QtoQGammaSudakov
do SplittingGenerator:AddInitialSplitting t->t,gamma; QtoQGammaSudakov
do SplittingGenerator:AddInitialSplitting g->g,g; GtoGGSudakov
#
do SplittingGenerator:AddInitialSplitting g->d,dbar; GtoQQbarSudakov
do SplittingGenerator:AddInitialSplitting g->u,ubar; GtoQQbarSudakov
do SplittingGenerator:AddInitialSplitting g->s,sbar; GtoQQbarSudakov
do SplittingGenerator:AddInitialSplitting g->c,cbar; GtoccbarSudakov
do SplittingGenerator:AddInitialSplitting g->b,bbar; GtobbbarSudakov
#
do SplittingGenerator:AddInitialSplitting gamma->d,dbar; GammatoQQbarSudakov
do SplittingGenerator:AddInitialSplitting gamma->u,ubar; GammatoQQbarSudakov
do SplittingGenerator:AddInitialSplitting gamma->s,sbar; GammatoQQbarSudakov
do SplittingGenerator:AddInitialSplitting gamma->c,cbar; GammatoQQbarSudakov
do SplittingGenerator:AddInitialSplitting gamma->b,bbar; GammatoQQbarSudakov
#
do SplittingGenerator:AddInitialSplitting d->g,d; dtoGdSudakov
do SplittingGenerator:AddInitialSplitting u->g,u; utoGuSudakov
do SplittingGenerator:AddInitialSplitting s->g,s; QtoGQSudakov
do SplittingGenerator:AddInitialSplitting c->g,c; QtoGQSudakov
do SplittingGenerator:AddInitialSplitting b->g,b; QtoGQSudakov
do SplittingGenerator:AddInitialSplitting dbar->g,dbar; dtoGdSudakov
do SplittingGenerator:AddInitialSplitting ubar->g,ubar; utoGuSudakov
do SplittingGenerator:AddInitialSplitting sbar->g,sbar; QtoGQSudakov
do SplittingGenerator:AddInitialSplitting cbar->g,cbar; QtoGQSudakov
do SplittingGenerator:AddInitialSplitting bbar->g,bbar; QtoGQSudakov
#
do SplittingGenerator:AddInitialSplitting d->gamma,d; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting u->gamma,u; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting s->gamma,s; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting c->gamma,c; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting b->gamma,b; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting dbar->gamma,dbar; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting ubar->gamma,ubar; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting sbar->gamma,sbar; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting cbar->gamma,cbar; QtoGammaQSudakov
do SplittingGenerator:AddInitialSplitting bbar->gamma,bbar; QtoGammaQSudakov

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