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diff --git a/MatrixElement/Hadron/MEDiffraction.cc b/MatrixElement/Hadron/MEDiffraction.cc
--- a/MatrixElement/Hadron/MEDiffraction.cc
+++ b/MatrixElement/Hadron/MEDiffraction.cc
@@ -1,869 +1,915 @@
// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
// functions of the MEDiffraction class.
//
#include "MEDiffraction.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Utilities/SimplePhaseSpace.h"
#include "ThePEG/Repository/EventGenerator.h"
#include "ThePEG/Handlers/StandardXComb.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
using namespace Herwig;
#include "ThePEG/PDT/EnumParticles.h"
#include "ThePEG/MatrixElement/Tree2toNDiagram.h"
#include "ThePEG/Interface/Parameter.h"
#include "ThePEG/Interface/Switch.h"
#include "Herwig/Utilities/Kinematics.h"
MEDiffraction::MEDiffraction()
: HwMEBase(),
deltaOnly(false),
//theme2(1.0),
//thesoftPomeronIntercept(1.05),
//thesoftPomeronSlope(0.25),
//theprotonPomeronSlope(10.1),
isInRunPhase(false) {}
void MEDiffraction::getDiagrams() const {
//incoming particles
//PPair incomingHardons = generator()->currentEvent()->primarySubProcess()->incoming();
+ cPDPair incomingHardons = generator()->eventHandler()->incoming();
+ //cout<<incomingHardons.first->id()<<" "<<incomingHardons.second->id()<<endl;
- //TODO: only works for proton-proton collisions. Should be generalized
+ //TODO: only works for proton-proton and proton-antiproton collisions.
tcPDPtr pom = getParticleData(990);
- tcPDPtr prt1 = getParticleData(2212);
+ //tcPDPtr prt1 = getParticleData(2212);
//get incoming particles
- //tcPDPtr prt1 = getParticleData(incomingHardons.first->id());
- //tcPDPtr prt11 = getParticleData(incomingHardons.second->id());
-
- tcPDPtr prt2 = getParticleData(2214);//Delta+
- tcPDPtr q1 = getParticleData(2); //u
- tcPDPtr q2 = getParticleData(1); //d
- tcPDPtr dq1 = getParticleData(2101); //ud_0
- tcPDPtr dq11 = getParticleData(2103); //ud_1
- tcPDPtr dq2 = getParticleData(2203); //uu_1
+ tcPDPtr prt11 = getParticleData(incomingHardons.first->id());
+ tcPDPtr prt12 = getParticleData(incomingHardons.second->id());
+
+ //get sign of id
+ int sign1=0, sign2=0;
+ sign1 = (incomingHardons.first->id() > 0) ? 1 : -1;
+ sign2 = (incomingHardons.second->id() > 0) ? 1 : -1;
+ //cout<<sign1<<" "<<sign2<<endl;
+
+ tcPDPtr prt21 = getParticleData(sign1*2214);//Delta+
+ tcPDPtr prt22 = getParticleData(sign2*2214);//Delta+
+
+ //for the left side
+ tcPDPtr q11 = getParticleData(sign1*2); //u
+ tcPDPtr q21 = getParticleData(sign1*1); //d
+ //for the right side
+ tcPDPtr q12 = getParticleData(sign2*2); //u
+ tcPDPtr q22 = getParticleData(sign2*1); //d
+ //for the left side
+ tcPDPtr dq11 = getParticleData(sign1*2101); //ud_0
+ tcPDPtr dq111 = getParticleData(sign1*2103); //ud_1
+ tcPDPtr dq21 = getParticleData(sign1*2203); //uu_1
+ //for the right side
+ tcPDPtr dq12 = getParticleData(sign2*2101); //ud_0
+ tcPDPtr dq112 = getParticleData(sign2*2103); //ud_1
+ tcPDPtr dq22 = getParticleData(sign2*2203); //uu_1
tcPDPtr gl = getParticleData(21);//gluon
//switch between dissociation decays to different
//number of clusters or dissociation into delta only
//(Maybe can be automated???)
//(Should be generalized to ppbar, for example!!!)
switch(dissociationDecay){
case 0: //one cluster or only delta in the final state
if(deltaOnly) //only delta in the final state
{
switch (diffDirection){
case 0:
- add(new_ptr((Tree2toNDiagram(3), prt1, pom, prt1, 1, prt2, 2, prt1, -1)));
+ add(new_ptr((Tree2toNDiagram(3), prt11, pom, prt12, 1, prt21, 2, prt12, -1)));
break;
case 1:
- add(new_ptr((Tree2toNDiagram(3), prt1, pom, prt1, 1, prt1, 2, prt2, -1)));
+ add(new_ptr((Tree2toNDiagram(3), prt11, pom, prt12, 1, prt11, 2, prt22, -1)));
break;
case 2:
- add(new_ptr((Tree2toNDiagram(3), prt1, pom, prt1, 1, prt2, 2, prt2, -1)));
+ add(new_ptr((Tree2toNDiagram(3), prt11, pom, prt12, 1, prt21, 2, prt22, -1)));
break;
}
}else
{
//switch between direction of dissociated proton for single diffraction or
//double diffraction
/////////////////Cases with ud_1 commented out, because of HadronSelector////////////////
switch (diffDirection){
case 0: //left
//u -- ud_0
- add(new_ptr((Tree2toNDiagram(4), prt1, q1, pom, prt1, 3, prt1, 1, dq1, 2, q1, -1)));
+ add(new_ptr((Tree2toNDiagram(4), prt11, q11, pom, prt12, 3, prt12, 1, dq11, 2, q11, -1)));
//u -- ud_1
//add(new_ptr((Tree2toNDiagram(4), prt1, q1, pom, prt1, 3, prt1, 1, dq11, 2, q1, -2)));
//d -- uu_1
- add(new_ptr((Tree2toNDiagram(4), prt1, q2, pom, prt1, 3, prt1, 1, dq2, 2, q2, -3)));
+ add(new_ptr((Tree2toNDiagram(4), prt11, q21, pom, prt12, 3, prt12, 1, dq21, 2, q21, -3)));
break;
case 1: //right
//u -- ud_0
- add(new_ptr((Tree2toNDiagram(4), prt1, pom, q1, prt1, 1, prt1, 3, dq1, 2, q1, -1)));
+ add(new_ptr((Tree2toNDiagram(4), prt11, pom, q12, prt12, 1, prt11, 3, dq12, 2, q12, -1)));
//u -- ud_1
//add(new_ptr((Tree2toNDiagram(4), prt1, pom, q1, prt1, 1, prt1, 3, dq11, 2, q1, -2)));
//d -- uu_1
- add(new_ptr((Tree2toNDiagram(4), prt1, pom, q2, prt1, 1, prt1, 3, dq2, 2, q2, -3)));
+ add(new_ptr((Tree2toNDiagram(4), prt11, pom, q22, prt12, 1, prt11, 3, dq22, 2, q22, -3)));
break;
case 2: //double
//u -- ud_0 left u -- ud_0 right
- add(new_ptr((Tree2toNDiagram(5), prt1, q1, pom, q1, prt1, 1, dq1, 2, q1, 3, q1, 4, dq1, -1)));
+ add(new_ptr((Tree2toNDiagram(5), prt11, q11, pom, q12, prt12, 1, dq11, 2, q11, 3, q12, 4, dq12, -1)));
//u -- ud_0 left u -- ud_1 right
//add(new_ptr((Tree2toNDiagram(5), prt1, q1, pom, q1, prt1, 1, dq1, 2, q1, 3, q1, 4, dq11, -2)));
//u -- ud_0 left d -- uu_1 right
- add(new_ptr((Tree2toNDiagram(5), prt1, q1, pom, q2, prt1, 1, dq1, 2, q1, 3, q2, 4, dq2, -3)));
+ add(new_ptr((Tree2toNDiagram(5), prt11, q11, pom, q22, prt12, 1, dq11, 2, q11, 3, q22, 4, dq22, -3)));
//u -- ud_1 left u -- ud_0 right
//add(new_ptr((Tree2toNDiagram(5), prt1, q1, pom, q1, prt1, 1, dq11, 2, q1, 3, q1, 4, dq1, -4)));
//u -- ud_1 left u -- ud_1 right
//add(new_ptr((Tree2toNDiagram(5), prt1, q1, pom, q1, prt1, 1, dq11, 2, q1, 3, q1, 4, dq11, -5)));
//u -- ud_1 left d -- uu_1 right
//add(new_ptr((Tree2toNDiagram(5), prt1, q1, pom, q2, prt1, 1, dq11, 2, q1, 3, q2, 4, dq2, -6)));
//d -- uu_1 left u -- ud_0 right
- add(new_ptr((Tree2toNDiagram(5), prt1, q2, pom, q1, prt1, 1, dq2, 2, q2, 3, q1, 4, dq1, -7)));
+ add(new_ptr((Tree2toNDiagram(5), prt11, q21, pom, q12, prt12, 1,dq21, 2, q21, 3, q12, 4, dq12, -7)));
//d -- uu_1 left u -- ud_1 right
//add(new_ptr((Tree2toNDiagram(5), prt1, q2, pom, q1, prt1, 1, dq2, 2, q2, 3, q1, 4, dq11, -8)));
//d -- uu_1 left d -- uu_1 right
- add(new_ptr((Tree2toNDiagram(5), prt1, q2, pom, q2, prt1, 1, dq2, 2, q2, 3, q2, 4, dq2, -9)));
+ add(new_ptr((Tree2toNDiagram(5), prt11, q21, pom, q22, prt12, 1, dq21, 2, q21, 3, q22, 4, dq22, -9)));
break;
}
}
break;
case 1: //two clusters (cases with ud_1 not included)
switch (diffDirection){
case 0: //left
//u -- ud_0
- add(new_ptr((Tree2toNDiagram(5), prt1, q1, gl, pom, prt1, 1, dq1, 2, q1, 3, gl, 4, prt1, -1)));
+ add(new_ptr((Tree2toNDiagram(5), prt11, q11, gl, pom, prt12, 1, dq11, 2, q11, 3, gl, 4, prt12, -1)));
//d -- uu_1
- add(new_ptr((Tree2toNDiagram(5), prt1, q2, gl, pom, prt1, 1, dq2, 2, q2, 3, gl, 4, prt1, -2)));
+ add(new_ptr((Tree2toNDiagram(5), prt11, q21, gl, pom, prt12, 1, dq21, 2, q21, 3, gl, 4, prt12, -2)));
break;
case 1: //right
//u -- ud_0
- add(new_ptr((Tree2toNDiagram(5), prt1, pom, gl, q1, prt1, 1, prt1, 2, gl, 3, q1, 4, dq1, -1)));
+ add(new_ptr((Tree2toNDiagram(5), prt11, pom, gl, q12, prt12, 1, prt11, 2, gl, 3, q12, 4, dq12, -1)));
//d -- ud_1
- add(new_ptr((Tree2toNDiagram(5), prt1, pom, gl, q2, prt1, 1, prt1, 2, gl, 3, q2, 4, dq2, -2)));
+ add(new_ptr((Tree2toNDiagram(5), prt11, pom, gl, q22, prt12, 1, prt11, 2, gl, 3, q22, 4, dq22, -2)));
break;
case 2: //double
//u -- ud_0 left u -- ud_0 right
- add(new_ptr((Tree2toNDiagram(7), prt1, q1, gl, pom, gl, q1, prt1, 1, dq1, 2, q1, 3, gl, 4,
- gl, 5, q1, 6, dq1, -1)));
+ add(new_ptr((Tree2toNDiagram(7), prt11, q11, gl, pom, gl, q12, prt12, 1, dq11, 2, q11, 3, gl, 4,
+ gl, 5, q12, 6, dq12, -1)));
//u -- ud_0 left d -- uu_1 right
- add(new_ptr((Tree2toNDiagram(7), prt1, q1, gl, pom, gl, q2, prt1, 1, dq1, 2, q1, 3, gl, 4,
- gl, 5, q2, 6, dq2, -2)));
+ add(new_ptr((Tree2toNDiagram(7), prt11, q11, gl, pom, gl, q22, prt12, 1, dq11, 2, q11, 3, gl, 4,
+ gl, 5, q22, 6, dq22, -2)));
//d -- uu_1 left u -- ud_0 right
- add(new_ptr((Tree2toNDiagram(7), prt1, q2, gl, pom, gl, q1, prt1, 1, dq2, 2, q2, 3, gl, 4,
- gl, 5, q1, 6, dq1, -3)));
+ add(new_ptr((Tree2toNDiagram(7), prt11, q21, gl, pom, gl, q12, prt12, 1, dq21, 2, q21, 3, gl, 4,
+ gl, 5, q12, 6, dq12, -3)));
//d -- uu_1 left d -- uu_1 right
- add(new_ptr((Tree2toNDiagram(7), prt1, q2, gl, pom, gl, q2, prt1, 1, dq2, 2, q2, 3, gl, 4,
- gl, 5, q2, 6, dq2, -4)));
+ add(new_ptr((Tree2toNDiagram(7), prt11, q21, gl, pom, gl, q22, prt12, 1, dq21, 2, q21, 3, gl, 4,
+ gl, 5, q22, 6, dq22, -4)));
break;
}
break;
}
}
Energy2 MEDiffraction::scale() const {
return sqr(10*GeV);
}
int MEDiffraction::nDim() const {
return 0;
}
void MEDiffraction::setKinematics() {
HwMEBase::setKinematics(); // Always call the base class method first
}
bool MEDiffraction::generateKinematics(const double * ) {
// generate the masses of the particles
for (size_t i = 2; i < meMomenta().size(); ++i)
meMomenta()[i] = Lorentz5Momentum(mePartonData()[i]->generateMass());
/* sample M12, M22 and t, characterizing the diffractive final state */
const pair<pair<Energy2,Energy2>,Energy2> point = diffractiveMassAndMomentumTransfer();
const Energy2 M12 (point.first.first);
const Energy2 M22 (point.first.second);
const Energy2 t(point.second);
/* construct the hadronic momenta in the lab frame */
const double phi = UseRandom::rnd() * Constants::twopi;
const Energy cmEnergy = generator()->maximumCMEnergy();
const Energy2 s = sqr(cmEnergy);
//proton mass
const Energy2 m2 = sqr( getParticleData(2212)->mass() );
const Energy E3 = (s - M22 + M12) / (2.*cmEnergy);
const Energy E4 = (s + M22 - M12) / (2.*cmEnergy);
//Momentum of outgoing proton and dissociated proton
const Energy pprime = sqrt(kallen(s, M12, M22)) / (2.*cmEnergy);
//costheta of scattering angle
double costheta = s*(s + 2*t - 2*m2 - M12 - M22)
/ sqrt( kallen(s, M12, M22)*kallen(s, m2, m2) );
assert(abs(costheta)<=1.);
const Energy pzprime = pprime*costheta;
const Energy pperp = pprime*sqrt(1 - sqr(costheta));
/* momenta in the lab frame */
const Lorentz5Momentum p3 = Lorentz5Momentum(pperp*cos(phi), pperp*sin(phi), pzprime, E3);
const Lorentz5Momentum p4 = Lorentz5Momentum(-pperp*cos(phi), -pperp*sin(phi), -pzprime, E4);
/* decay dissociated proton into quark-diquark */
//squares of constituent masses of quark and diquark
const Energy2 mqq2(sqr(mqq())), mq2(sqr(mq()));
double sintheta = sqrt(1 - sqr(costheta));
Energy pqq;
Energy2 Mx2;
switch(diffDirection){
case 0:
Mx2=M12;
break;
case 1:
Mx2=M22;
break;
}
//total momentum
pqq = ((Mx2-mq2+mqq2)*pprime*costheta+ sqrt((Mx2+sqr(pprime))*(kallen(Mx2,mq2,mqq2)
-4*mqq2*sqr(pprime)*sqr(sintheta))))/(2*Mx2+2*sqr(pprime)*sqr(sintheta));
/* Select between left/right single diffraction and double diffraction */
//check if we want only delta for the excited state
//new boost vectors
const Boost p3boost = p3.findBoostToCM();
const Boost p4boost = p4.findBoostToCM();
Axis norm;
//Axis rotaxis, rotaxis1;
//double angle, angle1;
//pair of momenta for double decay for a two cluster case
pair<Lorentz5Momentum,Lorentz5Momentum> momPair, momPair1;
//fraction of momenta
double frac = UseRandom::rnd();
switch(dissociationDecay){
case 0:
if(!deltaOnly)
{
pair<Lorentz5Momentum,Lorentz5Momentum> decayMomenta;
pair<Lorentz5Momentum,Lorentz5Momentum> decayMomentaTwo;
const double phiprime = UseRandom::rnd() * Constants::twopi;
//aligned with outgoing dissociated proton
const double costhetaprime = costheta;
//along z axis
//const double costhetaprime = 1;
const double sinthetaprime=sqrt(1-sqr(costhetaprime));
//axis along which diquark from associated proton is aligned
Axis dir = Axis(sinthetaprime*cos(phiprime), sinthetaprime*sin(phiprime), costhetaprime);
switch (diffDirection){
case 0://Left single diffraction
meMomenta()[4].setT(sqrt(mq2+sqr(meMomenta()[4].x())+sqr(meMomenta()[4].y())+sqr(meMomenta()[4].z())));
////////////////////////////////////////////////////
do{}
while(!Kinematics::twoBodyDecay(p3,mqq(),mq(),-dir,decayMomenta.first,decayMomenta.second));
///////////
meMomenta()[2].setVect(p4.vect());
meMomenta()[2].setT(p4.t());
meMomenta()[3].setVect(decayMomenta.first.vect());
meMomenta()[3].setT(decayMomenta.first.t());
meMomenta()[4].setVect(decayMomenta.second.vect());
meMomenta()[4].setT(decayMomenta.second.t());
meMomenta()[2].rescaleEnergy();
meMomenta()[3].rescaleEnergy();
meMomenta()[4].rescaleEnergy();
break;
case 1://Right single diffraction
meMomenta()[4].setT(sqrt(mq2+sqr(meMomenta()[4].x())+sqr(meMomenta()[4].y())+sqr(meMomenta()[4].z())));
////////////////////////////////////////////////////
do{}
while(!Kinematics::twoBodyDecay(p4,mqq(),mq(),dir,decayMomenta.first,decayMomenta.second));
meMomenta()[2].setVect(p3.vect());
meMomenta()[2].setT(p3.t());
meMomenta()[3].setVect(decayMomenta.first.vect());
meMomenta()[3].setT(decayMomenta.first.t());
meMomenta()[4].setVect(decayMomenta.second.vect());
meMomenta()[4].setT(decayMomenta.second.t());
meMomenta()[2].rescaleEnergy();
meMomenta()[3].rescaleEnergy();
meMomenta()[4].rescaleEnergy();
break;
case 2://double diffraction
do{}
while(!Kinematics::twoBodyDecay(p3,mqq(),mq(),-dir,decayMomenta.first,decayMomenta.second));
do{}
while(!Kinematics::twoBodyDecay(p4,mqq(),mq(),dir,decayMomentaTwo.first,decayMomentaTwo.second));
meMomenta()[2].setVect(decayMomenta.first.vect());
meMomenta()[2].setT(decayMomenta.first.t());
meMomenta()[3].setVect(decayMomenta.second.vect());
meMomenta()[3].setT(decayMomenta.second.t());
meMomenta()[4].setVect(decayMomentaTwo.second.vect());
meMomenta()[4].setT(decayMomentaTwo.second.t());
meMomenta()[5].setVect(decayMomentaTwo.first.vect());
meMomenta()[5].setT(decayMomentaTwo.first.t());
meMomenta()[2].rescaleEnergy();
meMomenta()[3].rescaleEnergy();
meMomenta()[4].rescaleEnergy();
meMomenta()[5].rescaleEnergy();
break;
}
}else
{
meMomenta()[2+diffDirection].setVect(p3.vect());
meMomenta()[2+diffDirection].setT(p3.t());
meMomenta()[3-diffDirection].setVect(p4.vect());
meMomenta()[3-diffDirection].setT(p4.t());
meMomenta()[2].rescaleEnergy();
meMomenta()[3].rescaleEnergy();
}
break;
case 1:
switch(diffDirection){
case 0:
//quark and diquark masses
meMomenta()[2].setMass(mqq());
meMomenta()[3].setMass(mq());
//gluon constituent mass
meMomenta()[4].setMass(getParticleData(21)->constituentMass());
//outgoing proton
meMomenta()[5].setVect(p4.vect());
meMomenta()[5].setT(p4.t());
//two body decay of the outgoing dissociation proton
do{}
while(!Kinematics::twoBodyDecay(p3,mqq()+mq(),getParticleData(21)->constituentMass(),
p3.vect().unit(),momPair.first,momPair.second));
//put gluon back-to-back with quark-diquark
//set momenta of quark and diquark
frac = mqq()/(mqq()+mq());
meMomenta()[2].setVect(frac*momPair.first.vect());
meMomenta()[2].setT(sqrt(sqr(frac)*momPair.first.vect().mag2()+sqr(mqq())));
meMomenta()[3].setVect((1-frac)*momPair.first.vect());
meMomenta()[3].setT(sqrt(sqr(1-frac)*momPair.first.vect().mag2()+sqr(mq())));
//set momentum of gluon
meMomenta()[4].setVect(momPair.second.vect());
meMomenta()[4].setT(momPair.second.t());
break;
case 1:
//quark and diquark masses
meMomenta()[5].setMass(mqq());
meMomenta()[4].setMass(mq());
//gluon constituent mass
meMomenta()[3].setMass(getParticleData(21)->constituentMass());
//outgoing proton
meMomenta()[2].setVect(p3.vect());
meMomenta()[2].setT(p3.t());
//two body decay of the outgoing dissociation proton
do{}
while(!Kinematics::twoBodyDecay(p4,mqq()+mq(),getParticleData(21)->constituentMass(),
p4.vect().unit(),momPair.first,momPair.second));
//put gluon back-to-back with quark-diquark
//set momenta of quark and diquark
frac = mqq()/(mqq()+mq());
meMomenta()[5].setVect(frac*momPair.first.vect());
meMomenta()[5].setT(sqrt(sqr(frac)*momPair.first.vect().mag2()+sqr(mqq())));
meMomenta()[4].setVect((1-frac)*momPair.first.vect());
meMomenta()[4].setT(sqrt(sqr(1-frac)*momPair.first.vect().mag2()+sqr(mq())));
//set momentum of gluon
meMomenta()[3].setVect(momPair.second.vect());
meMomenta()[3].setT(momPair.second.t());
break;
case 2:
//first dissociated proton constituents
meMomenta()[2].setMass(mqq());
meMomenta()[3].setMass(mq());
meMomenta()[4].setMass(getParticleData(21)->constituentMass());
//second dissociated proton constituents
meMomenta()[5].setMass(getParticleData(21)->constituentMass());
meMomenta()[6].setMass(mq());
meMomenta()[7].setMass(mqq());
//do{}
//while(!Kinematics::threeBodyDecay(p3,meMomenta()[2],meMomenta()[3],meMomenta()[4]));
//do{}
//while(!Kinematics::threeBodyDecay(p4,meMomenta()[5],meMomenta()[6],meMomenta()[7]));
//two body decay of the outgoing dissociation proton
do{}
while(!Kinematics::twoBodyDecay(p3,mqq()+mq(),getParticleData(21)->constituentMass(),
p3.vect().unit(),momPair.first,momPair.second));
do{}
while(!Kinematics::twoBodyDecay(p4,mqq()+mq(),getParticleData(21)->constituentMass(),
p4.vect().unit(),momPair1.first,momPair1.second));
//put gluon back-to-back with quark-diquark
frac = mqq()/(mqq()+mq());
//first dissociated proton
//set momenta of quark and diquark
meMomenta()[2].setVect(frac*momPair.first.vect());
meMomenta()[2].setT(sqrt(sqr(frac)*momPair.first.vect().mag2()+sqr(mqq())));
meMomenta()[3].setVect((1-frac)*momPair.first.vect());
meMomenta()[3].setT(sqrt(sqr(1-frac)*momPair.first.vect().mag2()+sqr(mq())));
//set momentum of gluon
meMomenta()[4].setVect(momPair.second.vect());
meMomenta()[4].setT(momPair.second.t());
//first dissociated proton
//set momenta of quark and diquark
meMomenta()[7].setVect(frac*momPair1.first.vect());
meMomenta()[7].setT(sqrt(sqr(frac)*momPair1.first.vect().mag2()+sqr(mqq())));
meMomenta()[6].setVect((1-frac)*momPair1.first.vect());
meMomenta()[6].setT(sqrt(sqr(1-frac)*momPair1.first.vect().mag2()+sqr(mq())));
//set momentum of gluon
meMomenta()[5].setVect(momPair1.second.vect());
meMomenta()[5].setT(momPair1.second.t());
break;
}
meMomenta()[2].rescaleEnergy();
meMomenta()[3].rescaleEnergy();
meMomenta()[4].rescaleEnergy();
meMomenta()[5].rescaleEnergy();
if(diffDirection==2){
meMomenta()[6].rescaleEnergy();
meMomenta()[7].rescaleEnergy();
}
break;
}
jacobian(sqr(cmEnergy)/GeV2);
return true;
}
//Generate masses of dissociated protons and momentum transfer from probability f(M2,t)
//(for single diffraction). Sample according to f(M2,t)=f(M2)f(t|M2).
pair<pair<Energy2,Energy2>,Energy2> MEDiffraction::diffractiveMassAndMomentumTransfer() const {
Energy2 theM12(ZERO),theM22(ZERO), thet(ZERO);
int count = 0;
//proton mass squared
const Energy2 m2 = sqr(getParticleData(2212)->mass());
//delta mass squared
const Energy2 md2 = sqr(getParticleData(2214)->mass());
Energy2 M2;
bool condition = true;
do {
//check if we want only delta
if(deltaOnly)
{
switch(diffDirection){
case 0:
theM12 = md2;
theM22 = m2;
M2 = md2;
thet = randomt(md2);
break;
case 1:
theM22 = md2;
theM12 = m2;
M2 = md2;
thet = randomt(md2);
break;
case 2:
theM12 = md2;
theM22 = md2;
M2 = md2;
thet = doublediffrandomt(theM12,theM22);
break;
}
//theM12=m2;
//theM22=m2;
}else{
switch (diffDirection){
case 0:
M2=randomM2();
thet = randomt(M2);
theM12=M2;
//theM12=randomM2();
theM22=m2;
break;
case 1:
theM12=m2;
M2=randomM2();
thet = randomt(M2);
//theM22=randomM2();
theM22=M2;
break;
case 2://TODO: choose M2
theM12=randomM2();
theM22=randomM2();
M2=(theM12>theM22) ? theM12: theM22;
//thet = randomt(M2);
thet = doublediffrandomt(theM12,theM22);
break;
}
}
count++;
//} while(count < 100 && UseRandom::rnd() > pow(M2max()/M2, 2*softPomeronSlope()*thet));
const Energy cmEnergy = generator()->maximumCMEnergy();
const Energy2 s = sqr(cmEnergy);
InvEnergy2 slope;
if(diffDirection==2){
slope = 2*softPomeronSlope()*log(.1+(sqr(cmEnergy)/softPomeronSlope())/(theM12*theM22));
}else{
slope = protonPomeronSlope()
+ 2*softPomeronSlope()*log(sqr(cmEnergy)/M2);
}
//const double deltaP = 1-softPomeronIntercept();
const double expmax = exp(slope*tmaxfun(s,m2,M2));
const double expmin = exp(slope*tminfun(s,m2,M2));
//(1-M2/s) added to smear the result for large M2.
//condition = UseRandom::rnd()>(1-M2/s)*(1+(2*sqr(2*GeV))/(sqr(2*GeV)+M2))*(protonPomeronSlope()*GeV2)*(expmax-expmin)/(slope*GeV2);
//condition = (UseRandom::rnd()>(1-M2/s)*(protonPomeronSlope()*GeV2)*(expmax-expmin)/(slope*GeV2))
// ||((theM12/GeV2)*(theM22/GeV2)>=(sqr(cmEnergy)/GeV2)/(softPomeronSlope()*GeV2));
//without (1-M2/s) constraint
condition = (UseRandom::rnd()>(protonPomeronSlope()*GeV2)*(expmax-expmin)/(slope*GeV2))
||((theM12/GeV2)*(theM22/GeV2)>=(sqr(cmEnergy)/GeV2)/(softPomeronSlope()*GeV2));
}while(condition);
return make_pair (make_pair(theM12,theM22),thet);
}
//Decay of the excited proton to quark-diquark
pair<Lorentz5Momentum,Lorentz5Momentum> MEDiffraction::twoBodyDecayMomenta(Lorentz5Momentum pp) const{
//Decay of the excited proton
const Energy2 Mx2(sqr(pp.mass())),mq2(sqr(mq())),mqq2(sqr(mqq()));
//const Energy2 psq = sqr(Mx2+mqq2-mq2)/(4*Mx2) - mqq2;
//cout<<diffDirection<<" "<<pp.mass()/GeV<<endl;
const Energy2 psq = ((Mx2-sqr(mq()+mqq()))*(Mx2-sqr(mq()-mqq())))/(4*Mx2);
assert(psq/GeV2>0);
const Energy p(sqrt(psq));
const double phi = UseRandom::rnd() * Constants::twopi;
const double costheta =1-2*UseRandom::rnd();
const double sintheta = sqrt(1-sqr(costheta));
Lorentz5Momentum k1=Lorentz5Momentum(p*sintheta*cos(phi), p*sintheta*sin(phi), p*costheta, sqrt(mq2+psq));
Lorentz5Momentum k2=Lorentz5Momentum(-p*sintheta*cos(phi), -p*sintheta*sin(phi), -p*costheta,sqrt(mqq2+psq));
//find boost to pp center of mass
const Boost betap3 = (pp).findBoostToCM();
//k1 and k2 calculated at p3 center of mass, so boost back
k1.boost(-betap3);
k2.boost(-betap3);
//first is quark, second diquark
return make_pair(k1,k2);
}
Energy2 MEDiffraction::randomt(Energy2 M2) const {
assert(protonPomeronSlope()*GeV2 > 0);
//proton mass
const Energy2 m2 = sqr( getParticleData(2212)->mass() );
const Energy cmEnergy = generator()->maximumCMEnergy();
const Energy2 ttmin = tminfun(sqr(cmEnergy),m2,M2);
const Energy2 ttmax = tmaxfun(sqr(cmEnergy),m2,M2);
// const InvEnergy2 slope = protonPomeronSlope()
// + 2*softPomeronSlope()*log( pow<2,1>(cmEnergy)/M2max() );
const InvEnergy2 slope = protonPomeronSlope()
+ 2*softPomeronSlope()*log(sqr(cmEnergy)/M2);
// return log( exp(slope*tmin(sqr(cmEnergy),m2,M2)) +
// UseRandom::rnd()*(exp(slope*tmax(sqr(cmEnergy),m2,M2)) - exp(slope*tmin(sqr(cmEnergy),m2,M2))) ) / slope;
return log( exp(slope*ttmin) +
UseRandom::rnd()*(exp(slope*ttmax) - exp(slope*ttmin)) ) / slope;
}
Energy2 MEDiffraction::doublediffrandomt(Energy2 M12, Energy2 M22) const {
const Energy cmEnergy = generator()->maximumCMEnergy();
//const InvEnergy2 slope = 2*softPomeronSlope()*log( (pow<2,1>(cmEnergy)*pow<-1,1>(softPomeronSlope()))/pow<2,1>(M2max()) );
//softPomeronSlope() chosen as the scale s0
const double shift = 0.1;
const InvEnergy2 slope = 2*softPomeronSlope()*log(shift+(sqr(cmEnergy)/softPomeronSlope())/(M12*M22));
//cout<<"slope: "<<slope*GeV2<<endl;
const Energy2 ttmin = tminfun(sqr(cmEnergy),M12,M22);
const Energy2 ttmax = tmaxfun(sqr(cmEnergy),M12,M22);
//return log( exp(slope*ttmin) +
// UseRandom::rnd()*(exp(slope*ttmax) -
// exp(slope*ttmin)) )/ slope;
return log( exp(slope*ttmin) +
UseRandom::rnd()*(exp(slope*ttmax) - exp(slope*ttmin)) ) / slope;
}
Energy2 MEDiffraction::randomM2() const {
const double tmp = 1 - softPomeronIntercept();
//const Energy2 s0 = GeV2;
const Energy cmEnergy = generator()->maximumCMEnergy();
// return s0 * pow( pow(M2min()/s0,tmp) +
// UseRandom::rnd() * (pow(M2max()/s0,tmp) - pow(M2min()/s0,tmp)),
// 1.0/tmp );
return sqr(cmEnergy) * pow( pow(M2min()/sqr(cmEnergy),tmp) +
UseRandom::rnd() * (pow(M2max()/sqr(cmEnergy),tmp) - pow(M2min()/sqr(cmEnergy),tmp)),
1.0/tmp );
}
Energy2 MEDiffraction::tminfun(Energy2 s, Energy2 M12, Energy2 M22) const {
const Energy2 m2 = sqr( getParticleData(2212)->mass() );
//return (1/(2*s))*(-sqrt(kallen(s, M12, M12)*kallen(s, M12, M22))-sqr(s)+3*s*M12+s*M22);
return (1/(2*s))*(-sqrt(kallen(s, m2, m2)*kallen(s, M12, M22))-sqr(s)+2*s*m2+s*M12+s*M22);
}
Energy2 MEDiffraction::tmaxfun(Energy2 s, Energy2 M12, Energy2 M22) const {
const Energy2 m2 = sqr( getParticleData(2212)->mass() );
//return (1/(2*s))*(sqrt(kallen(s, M12, M12)*kallen(s, M12, M22))-sqr(s)+3*s*M12+s*M22);
return (1/(2*s))*(sqrt(kallen(s, m2, m2)*kallen(s, M12, M22))-sqr(s)+2*s*m2+s*M12+s*M22);
}
double MEDiffraction::me2() const{
return theme2;
}
CrossSection MEDiffraction::dSigHatDR() const {
return me2()*jacobian()/sHat()*sqr(hbarc);
}
unsigned int MEDiffraction::orderInAlphaS() const {
return 0;
}
unsigned int MEDiffraction::orderInAlphaEW() const {
return 2;
}
Selector<MEBase::DiagramIndex>
MEDiffraction::diagrams(const DiagramVector & diags) const {
Selector<DiagramIndex> sel;
//for ( DiagramIndex i = 0; i < diags.size(); ++i ) {
//sel.insert(1.0, i);
/////////////////Cases with ud_1 commented out, because of HadronSelector////////////////
if(!deltaOnly){
if(diffDirection<2){
//sel.insert(1/2,0);
//sel.insert(1/6,1);
//sel.insert(1/3,2);
sel.insert(2/3,0);
sel.insert(1/3,1);
}else{
//sel.insert(1/4,0);
//sel.insert(1/12,1);
//sel.insert(1/6,2);
//sel.insert(1/12,3);
//sel.insert(1/36,4);
//sel.insert(1/18,5);
//sel.insert(1/6,6);
//sel.insert(1/18,7);
//sel.insert(1/9,8);
sel.insert(4/9,0);
sel.insert(2/9,1);
sel.insert(2/9,2);
sel.insert(1/9,3);
}
}else{
sel.insert(1.0,0);
}
//}
return sel;
}
Selector<const ColourLines *>
MEDiffraction::colourGeometries(tcDiagPtr ) const {
Selector<const ColourLines *> sel;
+ int sign1=0, sign2=0;
+ sign1 = (generator()->eventHandler()->incoming().first->id() > 0) ? 1 : -1;
+ sign2 = (generator()->eventHandler()->incoming().second->id() > 0) ? 1 : -1;
+
switch(dissociationDecay){
case 0:
if(!deltaOnly)
{
if(diffDirection!=2){
//static ColourLines dqq("-6 7");
- //TODO create the general case
+ //TODO: only works for proton-proton and proton-antiproton collisions.
//ColourLines dqq("");
if (diffDirection == 0){
- static ColourLines dqq0=ColourLines("-6 2 7");
- sel.insert(1.0,&dqq0);
+ if(sign1>0){
+ static ColourLines dqq0=ColourLines("-6 2 7");
+ sel.insert(1.0,&dqq0);
+ }else{
+ static ColourLines dqq0=ColourLines("6 -2 -7");
+ sel.insert(1.0,&dqq0);
+ }
+
+
}
else{
- static ColourLines dqq1=ColourLines("-6 3 7");
- sel.insert(1.0,&dqq1);
+ if(sign2>0){
+ static ColourLines dqq1=ColourLines("-6 3 7");
+ sel.insert(1.0,&dqq1);
+ }else{
+ static ColourLines dqq1=ColourLines("6 -3 -7");
+ sel.insert(1.0,&dqq1);
+ }
}
//sel.insert(1.0, &dqq);
}else{
//static ColourLines dqq("-6 7, -8 9");
//sel.insert(1.0, &dqq);
+ if(sign1>0 && sign2>0){
+ static ColourLines ddqq0=ColourLines("-6 2 7, -9 4 8");
+ sel.insert(1.0,&ddqq0);
+ }else if(sign1<0 && sign2>0){
+ static ColourLines ddqq0=ColourLines("6 -2 -7, -9 4 8");
+ sel.insert(1.0,&ddqq0);
+ }else if(sign1>0&& sign2<0){
+ static ColourLines ddqq0=ColourLines("-6 2 7, 9 -4 -8");
+ sel.insert(1.0,&ddqq0);
+ }else{
+ static ColourLines ddqq0=ColourLines("6 -2 -7, 9 -4 -8");
+ sel.insert(1.0,&ddqq0);
+ }
- static ColourLines ddqq0=ColourLines("-6 2 7, -9 4 8");
- sel.insert(1.0,&ddqq0);
}
}else
{
static ColourLines cl("");
//Selector<const ColourLines *> sel;
sel.insert(1.0, &cl);
}
break;
case 1:
switch(diffDirection){
case 0:
static ColourLines clleft("-6 2 3 8, -8 -3 7");
sel.insert(1.0, &clleft);
break;
case 1:
static ColourLines clright("-9 4 3 7, -7 -3 8");
sel.insert(1.0, &clright);
break;
case 2:
static ColourLines cldouble("-8 2 3 10, -10 -3 9, -13 6 5 11, -11 -5 12");
sel.insert(1.0, &cldouble);
break;
}
break;
}
return sel;
}
void MEDiffraction::doinitrun() {
HwMEBase::doinitrun();
isInRunPhase = true;
}
IBPtr MEDiffraction::clone() const {
return new_ptr(*this);
}
IBPtr MEDiffraction::fullclone() const {
return new_ptr(*this);
}
ClassDescription<MEDiffraction> MEDiffraction::initMEDiffraction;
// Definition of the static class description member.
void MEDiffraction::persistentOutput(PersistentOStream & os) const {
os << theme2 << deltaOnly << diffDirection << theprotonPomeronSlope
<< thesoftPomeronIntercept << thesoftPomeronSlope << dissociationDecay;
}
void MEDiffraction::persistentInput(PersistentIStream & is, int) {
is >> theme2 >> deltaOnly >> diffDirection >> theprotonPomeronSlope
>> thesoftPomeronIntercept >> thesoftPomeronSlope >> dissociationDecay;
}
InvEnergy2 MEDiffraction::protonPomeronSlope() const{
return theprotonPomeronSlope/GeV2;
}
double MEDiffraction::softPomeronIntercept() const {
return thesoftPomeronIntercept;
}
InvEnergy2 MEDiffraction::softPomeronSlope() const {
return thesoftPomeronSlope/GeV2;
}
void MEDiffraction::Init() {
static ClassDocumentation<MEDiffraction> documentation
("There is no documentation for the MEDiffraction class");
static Parameter<MEDiffraction,double> interfaceme2
("DiffractionAmplitude",
"The square of the diffraction amplitude used to determine the "
"cross section.",
&MEDiffraction::theme2, 1.0, 0.00001, 100.0,
false, false, Interface::limited);
static Parameter<MEDiffraction,double> interfaceprotonPomeronSlope
("ProtonPomeronSlope",
"The proton-pomeron slope parameter.",
&MEDiffraction::theprotonPomeronSlope, 10.1, 0.00001, 100.0,
false, false, Interface::limited);
static Parameter<MEDiffraction,double> interfacesoftPomeronIntercept
("SoftPomeronIntercept",
"The soft pomeron intercept.",
&MEDiffraction::thesoftPomeronIntercept, 1.08, 0.00001, 100.0,
false, false, Interface::limited);
static Parameter<MEDiffraction,double> interfacesoftPomeronSlope
("SoftPomeronSlope",
"The soft pomeron slope parameter.",
&MEDiffraction::thesoftPomeronSlope, 0.25, 0.00001, 100.0,
false, false, Interface::limited);
static Switch<MEDiffraction, bool> interfaceDeltaOnly
("DeltaOnly",
"proton-proton to proton-delta only",
&MEDiffraction::deltaOnly, 0, false, false);
static SwitchOption interfaceDeltaOnly0
(interfaceDeltaOnly,"No","Final state with Delta only is OFF", 0);
static SwitchOption interfaceDeltaOnly1
(interfaceDeltaOnly,"Yes","Final state with Delta only is ON", 1);
//Select if the left, right or both protons are excited
static Switch<MEDiffraction, unsigned int> interfaceDiffDirection
("DiffDirection",
"Direction of the excited proton",
&MEDiffraction::diffDirection, 0, false, false);
static SwitchOption left
(interfaceDiffDirection,"Left","Proton moving in the positive z direction", 0);
static SwitchOption right
(interfaceDiffDirection,"Right","Proton moving in the negative z direction", 1);
static SwitchOption both
(interfaceDiffDirection,"Both","Both protons", 2);
//Select if two or three body decay
static Switch<MEDiffraction, unsigned int> interfaceDissociationDecay
("DissociationDecay",
"Number of clusters the dissociated proton decays",
&MEDiffraction::dissociationDecay, 0, false, false);
static SwitchOption one
(interfaceDissociationDecay,"One","Dissociated proton decays into one cluster", 0);
static SwitchOption two
(interfaceDissociationDecay,"Two","Dissociated proton decays into two clusters", 1);
}
diff --git a/MatrixElement/Hadron/MEDiffraction.h b/MatrixElement/Hadron/MEDiffraction.h
--- a/MatrixElement/Hadron/MEDiffraction.h
+++ b/MatrixElement/Hadron/MEDiffraction.h
@@ -1,309 +1,308 @@
// -*- C++ -*-
#ifndef HERWIG_MEDiffraction_H
#define HERWIG_MEDiffraction_H
//
// This is the declaration of the MEDiffraction class.
//
#include "Herwig/MatrixElement/HwMEBase.h"
namespace Herwig {
using namespace ThePEG;
/**
* The MEDiffraction class provides a simple colour singlet exchange matrix element
* to be used in the soft component of the multiple scattering model of the
* underlying event
*
* @see \ref MEDiffractionInterfaces "The interfaces"
* defined for MEDiffraction.
*/
class MEDiffraction: public HwMEBase {
public:
MEDiffraction();
/** @name Virtual functions required by the MEBase class. */
//@{
/**
* Return the order in \f$\alpha_S\f$ in which this matrix
* element is given.
*/
virtual unsigned int orderInAlphaS() const;
/**
* Return the order in \f$\alpha_{EW}\f$ in which this matrix
* element is given.
*/
virtual unsigned int orderInAlphaEW() const;
/**
* The matrix element for the kinematical configuration
* previously provided by the last call to setKinematics(), suitably
* scaled by sHat() to give a dimension-less number.
* @return the matrix element scaled with sHat() to give a
* dimensionless number.
*/
virtual double me2() const;
/**
* Return the scale associated with the last set phase space point.
*/
virtual Energy2 scale() const;
/**
* Set the typed and momenta of the incoming and outgoing partons to
* be used in subsequent calls to me() and colourGeometries()
* according to the associated XComb object. If the function is
* overridden in a sub class the new function must call the base
* class one first.
*/
virtual void setKinematics();
/**
* The number of internal degrees of freedom used in the matrix
* element.
*/
virtual int nDim() const;
/**
* Generate internal degrees of freedom given nDim() uniform
* random numbers in the interval \f$ ]0,1[ \f$. To help the phase space
* generator, the dSigHatDR should be a smooth function of these
* numbers, although this is not strictly necessary.
* @param r a pointer to the first of nDim() consecutive random numbers.
* @return true if the generation succeeded, otherwise false.
*/
virtual bool generateKinematics(const double * r);
/**
* Return the matrix element squared differential in the variables
* given by the last call to generateKinematics().
*/
virtual CrossSection dSigHatDR() const;
/**
* Add all possible diagrams with the add() function.
*/
virtual void getDiagrams() const;
/**
* Get diagram selector. With the information previously supplied with the
* setKinematics method, a derived class may optionally
* override this method to weight the given diagrams with their
* (although certainly not physical) relative probabilities.
* @param dv the diagrams to be weighted.
* @return a Selector relating the given diagrams to their weights.
*/
virtual Selector<DiagramIndex> diagrams(const DiagramVector & dv) const;
/**
* Return a Selector with possible colour geometries for the selected
* diagram weighted by their relative probabilities.
* @param diag the diagram chosen.
* @return the possible colour geometries weighted by their
* relative probabilities.
*/
virtual Selector<const ColourLines *>
colourGeometries(tcDiagPtr diag) const;
//@}
/**
* Expect the incoming partons in the laboratory frame
*/
/* virtual bool wantCMS() const { return false; } */
public:
/** @name Functions used by the persistent I/O system. */
//@{
/**
* Function used to write out object persistently.
* @param os the persistent output stream written to.
*/
void persistentOutput(PersistentOStream & os) const;
/**
* Function used to read in object persistently.
* @param is the persistent input stream read from.
* @param version the version number of the object when written.
*/
void persistentInput(PersistentIStream & is, int version);
//@}
/**
* The standard Init function used to initialize the interfaces.
* Called exactly once for each class by the class description system
* before the main function starts or
* when this class is dynamically loaded.
*/
static void Init();
protected:
/**
* Initialize this object. Called in the run phase just before a run begins.
*/
virtual void doinitrun();
/** @name Clone Methods. */
//@{
/**
* Make a simple clone of this object.
* @return a pointer to the new object.
*/
virtual IBPtr clone() const;
/** Make a clone of this object, possibly modifying the cloned object
* to make it sane.
* @return a pointer to the new object.
*/
virtual IBPtr fullclone() const;
//@}
// If needed, insert declarations of virtual function defined in the
// InterfacedBase class here (using ThePEG-interfaced-decl in Emacs).
private:
/* The matrix element squared */
double theme2;
/* Use only delta as excited state */
bool deltaOnly;
/* Direction of the excited proton */
unsigned int diffDirection;
/* Number of clusters the dissociated proton decays into */
unsigned int dissociationDecay;
/* The mass of the consitutent quark */
Energy mq() const {return Energy(0.325*GeV);}
/* The mass of the constituent diquark */
Energy mqq() const {return Energy(0.650*GeV);}
double theprotonPomeronSlope;
double thesoftPomeronIntercept;
double thesoftPomeronSlope;
-
/**
* Sample the diffractive mass squared M2 and the momentum transfer t
*/
pair<pair<Energy2,Energy2>,Energy2> diffractiveMassAndMomentumTransfer() const;
//pair<pair<Energy2,Energy2>,Energy2> doublediffractiveMassAndMomentumTransfer() const;
/**
* Random value for the diffractive mass squared M2 according to (M2/s0)^(-intercept)
*/
Energy2 randomM2() const;
/**
* Random value for t according to exp(diffSlope*t)
*/
Energy2 randomt(Energy2 M2) const;
/**
* Random value for t according to exp(diffSlope*t) for double diffraction
*/
Energy2 doublediffrandomt(Energy2 M12, Energy2 M22) const;
pair<Lorentz5Momentum,Lorentz5Momentum> twoBodyDecayMomenta(Lorentz5Momentum pp) const;
InvEnergy2 protonPomeronSlope() const; //{return 8.1/GeV2;} // 15.0 GeV2
double softPomeronIntercept() const; //{return 1.01;} // 1.1 as usual
//M12 and M22 are masses squared of
//outgoing particles
Energy2 tminfun(Energy2 s, Energy2 M12, Energy2 M22) const;
Energy2 tmaxfun(Energy2 s , Energy2 M12, Energy2 M22) const;
//Energy2 M2min() const{return sqr(0.938+2*0.2)*GeV2;}
Energy2 M2min() const{return sqr(0.938+0.325+2*0.65)*GeV2;}
Energy2 M2max() const{return sqr(generator()->maximumCMEnergy()-1*GeV);}//TODO:modify to get proper parameters
InvEnergy2 softPomeronSlope() const;// { return 0.2 / GeV2; }
/* Kallen function */
template<int L, int E, int Q, int DL, int DE, int DQ>
Qty<2*L,2*E,2*Q,DL,DE,DQ> kallen(Qty<L,E,Q,DL,DE,DQ> a,
Qty<L,E,Q,DL,DE,DQ> b,
Qty<L,E,Q,DL,DE,DQ> c) const {
return a*a + b*b + c*c - 2.0*(a*b + b*c + c*a);
}
/**
* The static object used to initialize the description of this class.
* Indicates that this is a concrete class with persistent data.
*/
static ClassDescription<MEDiffraction> initMEDiffraction;
/**
* The assignment operator is private and must never be called.
* In fact, it should not even be implemented.
*/
MEDiffraction & operator=(const MEDiffraction &);
bool isInRunPhase;
};
}
#include "ThePEG/Utilities/ClassTraits.h"
namespace ThePEG {
/** @cond TRAITSPECIALIZATIONS */
/** This template specialization informs ThePEG about the
* base classes of MEDiffraction. */
template <>
struct BaseClassTrait<Herwig::MEDiffraction,1> {
/** Typedef of the first base class of MEDiffraction. */
typedef Herwig::HwMEBase NthBase;
};
/** This template specialization informs ThePEG about the name of
* the MEDiffraction class and the shared object where it is defined. */
template <>
struct ClassTraits<Herwig::MEDiffraction>
: public ClassTraitsBase<Herwig::MEDiffraction> {
/** Return a platform-independent class name */
static string className() { return "Herwig::MEDiffraction"; }
/**
* The name of a file containing the dynamic library where the class
* MEDiffraction is implemented. It may also include several, space-separated,
* libraries if the class MEDiffraction depends on other classes (base classes
* excepted). In this case the listed libraries will be dynamically
* linked in the order they are specified.
*/
static string library() {return "HwMEHadron.so";}
};
/** @endcond */
}
#endif /* HERWIG_MEDiffraction_H */

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Storage Format
Raw Data
Storage Handle
4242381
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