diff --git a/Decay/ScalarMeson/Makefile.am b/Decay/ScalarMeson/Makefile.am
--- a/Decay/ScalarMeson/Makefile.am
+++ b/Decay/ScalarMeson/Makefile.am
@@ -1,44 +1,46 @@
BUILT_SOURCES = SMDecayer__all.cc
CLEANFILES = SMDecayer__all.cc
SMDecayer__all.cc : $(DIR_H_FILES) $(DIR_CC_FILES) Makefile
@echo "Concatenating .cc files into $@"
@$(top_srcdir)/cat_with_cpplines $(DIR_CC_FILES) > $@
EXTRA_DIST = $(ALL_H_FILES) $(ALL_CC_FILES)
DIR_H_FILES = $(addprefix $(srcdir)/,$(ALL_H_FILES))
ALL_H_FILES = \
EtaPiGammaGammaDecayer.h\
EtaPiPiGammaDecayer.h \
EtaPiPiFermionsDecayer.h \
EtaPiPiPiDecayer.h \
PScalar4FermionsDecayer.h\
PScalarLeptonNeutrinoDecayer.h\
PScalarPScalarVectorDecayer.h \
PScalarVectorFermionsDecayer.h\
PScalarVectorVectorDecayer.h\
ScalarMesonTensorScalarDecayer.h\
ScalarScalarScalarDecayer.h \
SemiLeptonicScalarDecayer.h \
ScalarMesonFactorizedDecayer.h \
ScalarVectorVectorDecayer.h \
+Scalar2FermionsDecayer.h \
PseudoScalar2FermionsDecayer.h
DIR_CC_FILES = $(addprefix $(srcdir)/,$(ALL_CC_FILES))
ALL_CC_FILES = \
EtaPiGammaGammaDecayer.cc \
EtaPiPiGammaDecayer.cc \
EtaPiPiFermionsDecayer.cc \
EtaPiPiPiDecayer.cc \
PScalar4FermionsDecayer.cc \
PScalarLeptonNeutrinoDecayer.cc \
PScalarPScalarVectorDecayer.cc \
PScalarVectorFermionsDecayer.cc \
PScalarVectorVectorDecayer.cc \
ScalarMesonTensorScalarDecayer.cc \
ScalarScalarScalarDecayer.cc \
SemiLeptonicScalarDecayer.cc \
ScalarMesonFactorizedDecayer.cc \
ScalarVectorVectorDecayer.cc \
+Scalar2FermionsDecayer.cc \
PseudoScalar2FermionsDecayer.cc
diff --git a/Decay/ScalarMeson/PseudoScalar2FermionsDecayer.cc b/Decay/ScalarMeson/PseudoScalar2FermionsDecayer.cc
--- a/Decay/ScalarMeson/PseudoScalar2FermionsDecayer.cc
+++ b/Decay/ScalarMeson/PseudoScalar2FermionsDecayer.cc
@@ -1,278 +1,278 @@
// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
// functions of the PseudoScalar2FermionsDecayer class.
//
#include "PseudoScalar2FermionsDecayer.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Interface/Command.h"
#include "ThePEG/EventRecord/Particle.h"
#include "ThePEG/Repository/UseRandom.h"
#include "ThePEG/Repository/EventGenerator.h"
#include "ThePEG/Utilities/DescribeClass.h"
#include "ThePEG/Helicity/WaveFunction/SpinorWaveFunction.h"
#include "ThePEG/Helicity/WaveFunction/SpinorBarWaveFunction.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
using namespace Herwig;
using namespace ThePEG::Helicity;
void PseudoScalar2FermionsDecayer::doinitrun() {
DecayIntegrator::doinitrun();
if(initialize()) {
for(unsigned int ix=0;ix<incoming_.size();++ix) {
if(mode(ix)) maxweight_[ix] = mode(ix)->maxWeight();
}
}
}
void PseudoScalar2FermionsDecayer::doinit() {
DecayIntegrator::doinit();
// check the parameters arew consistent
unsigned int isize=coupling_.size();
if(isize!=incoming_.size() || isize!=outgoing_.size() ||
isize!=maxweight_.size())
throw InitException() << "Inconsistent parameters in VectorMeson2"
<< "FermionDecayer::doiin() " << Exception::runerror;
// set up the integration channels
PhaseSpaceModePtr mode;
for(unsigned int ix=0;ix<incoming_.size();++ix) {
tPDPtr in = getParticleData(incoming_[ix]);
tPDVector out = {getParticleData(outgoing_[ix].first),
getParticleData(outgoing_[ix].second)};
if(in&&out[0]&&out[1])
mode = new_ptr(PhaseSpaceMode(in,out,maxweight_[ix]));
else
mode=PhaseSpaceModePtr();
addMode(mode);
}
}
PseudoScalar2FermionsDecayer::PseudoScalar2FermionsDecayer() {
// don't include intermediates
generateIntermediates(false);
}
int PseudoScalar2FermionsDecayer::modeNumber(bool & cc,tcPDPtr parent,
const tPDVector & children) const {
if(children.size()!=2) return -1;
int id(parent->id());
int idbar = parent->CC() ? parent->CC()->id() : id;
int id1(children[0]->id());
int id1bar = children[0]->CC() ? children[0]->CC()->id() : id1;
int id2(children[1]->id());
int id2bar = children[1]->CC() ? children[1]->CC()->id() : id2;
int imode(-1);
unsigned int ix(0);
cc=false;
do {
if(incoming_[ix]==id ) {
if((id1 ==outgoing_[ix].first&&id2 ==outgoing_[ix].second)||
(id2 ==outgoing_[ix].first&&id1 ==outgoing_[ix].second)) imode=ix;
}
if(incoming_[ix]==idbar) {
if((id1bar==outgoing_[ix].first&&id2bar==outgoing_[ix].second)||
(id2bar==outgoing_[ix].first&&id1bar==outgoing_[ix].second)) {
imode=ix;
cc=true;
}
}
++ix;
}
while(imode<0&&ix<incoming_.size());
return imode;
}
IBPtr PseudoScalar2FermionsDecayer::clone() const {
return new_ptr(*this);
}
IBPtr PseudoScalar2FermionsDecayer::fullclone() const {
return new_ptr(*this);
}
void PseudoScalar2FermionsDecayer::persistentOutput(PersistentOStream & os) const {
os << coupling_ << incoming_ << outgoing_ << maxweight_;
}
void PseudoScalar2FermionsDecayer::persistentInput(PersistentIStream & is, int) {
is >> coupling_ >> incoming_ >> outgoing_ >> maxweight_;
}
// The following static variable is needed for the type
// description system in ThePEG.
DescribeClass<PseudoScalar2FermionsDecayer,DecayIntegrator>
describeHerwigPseudoScalar2FermionsDecayer("Herwig::PseudoScalar2FermionsDecayer", "HwSMDecay.so");
void PseudoScalar2FermionsDecayer::Init() {
static ClassDocumentation<PseudoScalar2FermionsDecayer> documentation
("The PseudoScalar2FermionsDecayer class implements the decay of a pseudoscalar meson "
"to a fermion and antifermion.");
static Command<PseudoScalar2FermionsDecayer> interfaceSetUpDecayMode
("SetUpDecayMode",
"Set up the particles (incoming, fermion, antifermion), coupling and max weight for a decay",
&PseudoScalar2FermionsDecayer::setUpDecayMode, false);
}
void PseudoScalar2FermionsDecayer::
constructSpinInfo(const Particle & part, ParticleVector decay) const {
unsigned int iferm(0),ianti(1);
// set up the spin information for the decay products
if(outgoing_[imode()].first!=decay[iferm]->id()) swap(iferm,ianti);
ScalarWaveFunction::constructSpinInfo(const_ptr_cast<tPPtr>(&part),
incoming,true);
SpinorBarWaveFunction::
constructSpinInfo(wavebar_,decay[iferm],outgoing,true);
SpinorWaveFunction::
constructSpinInfo(wave_ ,decay[ianti],outgoing,true);
}
double PseudoScalar2FermionsDecayer::me2(const int,const Particle & part,
const tPDVector & outgoing,
const vector<Lorentz5Momentum> & momenta,
MEOption meopt) const {
if(!ME())
ME(new_ptr(TwoBodyDecayMatrixElement(PDT::Spin0,PDT::Spin1Half,PDT::Spin1Half)));
// fermion and antifermion
unsigned int iferm(0),ianti(1);
if(outgoing_[imode()].first!=outgoing[iferm]->id()) swap(iferm,ianti);
// initialization
if(meopt==Initialize) {
ScalarWaveFunction::calculateWaveFunctions(rho_,const_ptr_cast<tPPtr>(&part),incoming);
}
wave_.resize(2);
wavebar_.resize(2);
for(unsigned int ix=0;ix<2;++ix) {
wavebar_[ix] = HelicityFunctions::dimensionedSpinorBar(-momenta[iferm],ix,Helicity::outgoing);
wave_ [ix] = HelicityFunctions::dimensionedSpinor (-momenta[ianti],ix,Helicity::outgoing);
}
// prefactor
InvEnergy pre(coupling_[imode()]/part.mass());
// now compute the ME
for(unsigned ix=0;ix<2;++ix) {
for(unsigned iy=0;iy<2;++iy) {
Complex temp = pre*wave_[ix].pseudoScalar(wavebar_[iy]);
if(iferm>ianti) (*ME())(0,ix,iy)=temp;
else (*ME())(0,iy,ix)=temp;
}
}
double me = ME()->contract(rho_).real();
// test of the matrix element
// double test = 2*sqr(coupling_[imode()])*(1.-sqr((momenta[0].mass()-momenta[1].mass())/part.mass()));
// cerr << "testing matrix element for " << part.PDGName() << " -> "
// << outgoing[0]->PDGName() << " " << outgoing[1]->PDGName() << " "
// << me << " " << test << " " << (me-test)/(me+test) << "\n";
// return the answer
return me;
}
bool PseudoScalar2FermionsDecayer::twoBodyMEcode(const DecayMode & dm,int & mecode,
double & coupling) const {
int imode(-1);
int id(dm.parent()->id()),idbar(id);
if(dm.parent()->CC()){idbar=dm.parent()->CC()->id();}
ParticleMSet::const_iterator pit(dm.products().begin());
int id1((**pit).id()),id1bar(id1);
if((**pit).CC()){id1bar=(**pit).CC()->id();}
++pit;
int id2((**pit).id()),id2bar(id2);
if((**pit).CC()){id2bar=(**pit).CC()->id();}
unsigned int ix(0); bool order(false);
do {
if(id ==incoming_[ix]) {
if(id1==outgoing_[ix].first&&id2==outgoing_[ix].second) {
imode=ix;
order=true;
}
if(id2==outgoing_[ix].first&&id1==outgoing_[ix].second) {
imode=ix;
order=false;
}
}
if(idbar==incoming_[ix]&&imode<0) {
if(id1bar==outgoing_[ix].first&&id2bar==outgoing_[ix].second) {
imode=ix;
order=true;
}
if(id2bar==outgoing_[ix].first&&id1bar==outgoing_[ix].second) {
imode=ix;
order=false;
}
}
++ix;
}
while(ix<incoming_.size()&&imode<0);
coupling=coupling_[imode];
- mecode=2;
+ mecode=24;
return order;
}
// output the setup information for the particle database
void PseudoScalar2FermionsDecayer::dataBaseOutput(ofstream & output,
bool header) const {
if(header) output << "update decayers set parameters=\"";
// parameters for the DecayIntegrator base class
DecayIntegrator::dataBaseOutput(output,false);
// the rest of the parameters
for(unsigned int ix=0;ix<incoming_.size();++ix) {
output << "do " << name() << ":SetUpDecayMode " << incoming_[ix] << " "
<< outgoing_[ix].first << " " << outgoing_[ix].second << " "
<< coupling_[ix] << " " << maxweight_[ix] << "\n";
}
if(header) output << "\n\" where BINARY ThePEGName=\""
<< fullName() << "\";" << endl;
}
string PseudoScalar2FermionsDecayer::setUpDecayMode(string arg) {
// parse first bit of the string
string stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
// extract PDG code for the incoming particle
long in = stoi(stype);
tcPDPtr pData = getParticleData(in);
if(!pData)
return "Incoming particle with id " + std::to_string(in) + "does not exist";
if(pData->iSpin()!=PDT::Spin0)
return "Incoming particle with id " + std::to_string(in) + "does not have spin 1";
// and outgoing particles
stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
pair<long,long> out;
out.first = stoi(stype);
pData = getParticleData(out.first);
if(!pData)
return "First outgoing particle with id " + std::to_string(out.first) + "does not exist";
if(pData->iSpin()!=PDT::Spin1Half)
return "First outgoing particle with id " + std::to_string(out.first) + "does not have spin 1/2";
stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
out.second = stoi(stype);
pData = getParticleData(out.second);
if(!pData)
return "Second outgoing particle with id " + std::to_string(out.second) + "does not exist";
if(pData->iSpin()!=PDT::Spin1Half)
return "Second outgoing particle with id " + std::to_string(out.second) + "does not have spin 1/2";
// get the coupling
stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
double g = stof(stype);
// and the maximum weight
stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
double wgt = stof(stype);
// store the information
incoming_.push_back(in);
outgoing_.push_back(out);
coupling_.push_back(g);
maxweight_.push_back(wgt);
// success
return "";
}
diff --git a/Decay/ScalarMeson/PseudoScalar2FermionsDecayer.cc b/Decay/ScalarMeson/Scalar2FermionsDecayer.cc
copy from Decay/ScalarMeson/PseudoScalar2FermionsDecayer.cc
copy to Decay/ScalarMeson/Scalar2FermionsDecayer.cc
--- a/Decay/ScalarMeson/PseudoScalar2FermionsDecayer.cc
+++ b/Decay/ScalarMeson/Scalar2FermionsDecayer.cc
@@ -1,278 +1,278 @@
// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
-// functions of the PseudoScalar2FermionsDecayer class.
+// functions of the Scalar2FermionsDecayer class.
//
-#include "PseudoScalar2FermionsDecayer.h"
+#include "Scalar2FermionsDecayer.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Interface/Command.h"
#include "ThePEG/EventRecord/Particle.h"
#include "ThePEG/Repository/UseRandom.h"
#include "ThePEG/Repository/EventGenerator.h"
#include "ThePEG/Utilities/DescribeClass.h"
#include "ThePEG/Helicity/WaveFunction/SpinorWaveFunction.h"
#include "ThePEG/Helicity/WaveFunction/SpinorBarWaveFunction.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
using namespace Herwig;
using namespace ThePEG::Helicity;
-void PseudoScalar2FermionsDecayer::doinitrun() {
+void Scalar2FermionsDecayer::doinitrun() {
DecayIntegrator::doinitrun();
if(initialize()) {
for(unsigned int ix=0;ix<incoming_.size();++ix) {
if(mode(ix)) maxweight_[ix] = mode(ix)->maxWeight();
}
}
}
-void PseudoScalar2FermionsDecayer::doinit() {
+void Scalar2FermionsDecayer::doinit() {
DecayIntegrator::doinit();
// check the parameters arew consistent
unsigned int isize=coupling_.size();
if(isize!=incoming_.size() || isize!=outgoing_.size() ||
isize!=maxweight_.size())
throw InitException() << "Inconsistent parameters in VectorMeson2"
<< "FermionDecayer::doiin() " << Exception::runerror;
// set up the integration channels
PhaseSpaceModePtr mode;
for(unsigned int ix=0;ix<incoming_.size();++ix) {
tPDPtr in = getParticleData(incoming_[ix]);
tPDVector out = {getParticleData(outgoing_[ix].first),
getParticleData(outgoing_[ix].second)};
if(in&&out[0]&&out[1])
mode = new_ptr(PhaseSpaceMode(in,out,maxweight_[ix]));
else
mode=PhaseSpaceModePtr();
addMode(mode);
}
}
-PseudoScalar2FermionsDecayer::PseudoScalar2FermionsDecayer() {
+Scalar2FermionsDecayer::Scalar2FermionsDecayer() {
// don't include intermediates
generateIntermediates(false);
}
-int PseudoScalar2FermionsDecayer::modeNumber(bool & cc,tcPDPtr parent,
+int Scalar2FermionsDecayer::modeNumber(bool & cc,tcPDPtr parent,
const tPDVector & children) const {
if(children.size()!=2) return -1;
int id(parent->id());
int idbar = parent->CC() ? parent->CC()->id() : id;
int id1(children[0]->id());
int id1bar = children[0]->CC() ? children[0]->CC()->id() : id1;
int id2(children[1]->id());
int id2bar = children[1]->CC() ? children[1]->CC()->id() : id2;
int imode(-1);
unsigned int ix(0);
cc=false;
do {
if(incoming_[ix]==id ) {
if((id1 ==outgoing_[ix].first&&id2 ==outgoing_[ix].second)||
(id2 ==outgoing_[ix].first&&id1 ==outgoing_[ix].second)) imode=ix;
}
if(incoming_[ix]==idbar) {
if((id1bar==outgoing_[ix].first&&id2bar==outgoing_[ix].second)||
(id2bar==outgoing_[ix].first&&id1bar==outgoing_[ix].second)) {
imode=ix;
cc=true;
}
}
++ix;
}
while(imode<0&&ix<incoming_.size());
return imode;
}
-IBPtr PseudoScalar2FermionsDecayer::clone() const {
+IBPtr Scalar2FermionsDecayer::clone() const {
return new_ptr(*this);
}
-IBPtr PseudoScalar2FermionsDecayer::fullclone() const {
+IBPtr Scalar2FermionsDecayer::fullclone() const {
return new_ptr(*this);
}
-void PseudoScalar2FermionsDecayer::persistentOutput(PersistentOStream & os) const {
+void Scalar2FermionsDecayer::persistentOutput(PersistentOStream & os) const {
os << coupling_ << incoming_ << outgoing_ << maxweight_;
}
-void PseudoScalar2FermionsDecayer::persistentInput(PersistentIStream & is, int) {
+void Scalar2FermionsDecayer::persistentInput(PersistentIStream & is, int) {
is >> coupling_ >> incoming_ >> outgoing_ >> maxweight_;
}
// The following static variable is needed for the type
// description system in ThePEG.
-DescribeClass<PseudoScalar2FermionsDecayer,DecayIntegrator>
-describeHerwigPseudoScalar2FermionsDecayer("Herwig::PseudoScalar2FermionsDecayer", "HwSMDecay.so");
+DescribeClass<Scalar2FermionsDecayer,DecayIntegrator>
+describeHerwigScalar2FermionsDecayer("Herwig::Scalar2FermionsDecayer", "HwSMDecay.so");
-void PseudoScalar2FermionsDecayer::Init() {
+void Scalar2FermionsDecayer::Init() {
- static ClassDocumentation<PseudoScalar2FermionsDecayer> documentation
- ("The PseudoScalar2FermionsDecayer class implements the decay of a pseudoscalar meson "
+ static ClassDocumentation<Scalar2FermionsDecayer> documentation
+ ("The Scalar2FermionsDecayer class implements the decay of a scalar meson "
"to a fermion and antifermion.");
- static Command<PseudoScalar2FermionsDecayer> interfaceSetUpDecayMode
+ static Command<Scalar2FermionsDecayer> interfaceSetUpDecayMode
("SetUpDecayMode",
"Set up the particles (incoming, fermion, antifermion), coupling and max weight for a decay",
- &PseudoScalar2FermionsDecayer::setUpDecayMode, false);
+ &Scalar2FermionsDecayer::setUpDecayMode, false);
}
-void PseudoScalar2FermionsDecayer::
+void Scalar2FermionsDecayer::
constructSpinInfo(const Particle & part, ParticleVector decay) const {
unsigned int iferm(0),ianti(1);
// set up the spin information for the decay products
if(outgoing_[imode()].first!=decay[iferm]->id()) swap(iferm,ianti);
ScalarWaveFunction::constructSpinInfo(const_ptr_cast<tPPtr>(&part),
incoming,true);
SpinorBarWaveFunction::
constructSpinInfo(wavebar_,decay[iferm],outgoing,true);
SpinorWaveFunction::
constructSpinInfo(wave_ ,decay[ianti],outgoing,true);
}
-double PseudoScalar2FermionsDecayer::me2(const int,const Particle & part,
+double Scalar2FermionsDecayer::me2(const int,const Particle & part,
const tPDVector & outgoing,
const vector<Lorentz5Momentum> & momenta,
MEOption meopt) const {
if(!ME())
ME(new_ptr(TwoBodyDecayMatrixElement(PDT::Spin0,PDT::Spin1Half,PDT::Spin1Half)));
// fermion and antifermion
unsigned int iferm(0),ianti(1);
if(outgoing_[imode()].first!=outgoing[iferm]->id()) swap(iferm,ianti);
// initialization
if(meopt==Initialize) {
ScalarWaveFunction::calculateWaveFunctions(rho_,const_ptr_cast<tPPtr>(&part),incoming);
}
wave_.resize(2);
wavebar_.resize(2);
for(unsigned int ix=0;ix<2;++ix) {
wavebar_[ix] = HelicityFunctions::dimensionedSpinorBar(-momenta[iferm],ix,Helicity::outgoing);
wave_ [ix] = HelicityFunctions::dimensionedSpinor (-momenta[ianti],ix,Helicity::outgoing);
}
// prefactor
InvEnergy pre(coupling_[imode()]/part.mass());
// now compute the ME
for(unsigned ix=0;ix<2;++ix) {
for(unsigned iy=0;iy<2;++iy) {
- Complex temp = pre*wave_[ix].pseudoScalar(wavebar_[iy]);
+ Complex temp = pre*wave_[ix].scalar(wavebar_[iy]);
if(iferm>ianti) (*ME())(0,ix,iy)=temp;
else (*ME())(0,iy,ix)=temp;
}
}
double me = ME()->contract(rho_).real();
// test of the matrix element
- // double test = 2*sqr(coupling_[imode()])*(1.-sqr((momenta[0].mass()-momenta[1].mass())/part.mass()));
+ // double test = 2*sqr(coupling_[imode()])*(1.-sqr((momenta[0].mass()+momenta[1].mass())/part.mass()));
// cerr << "testing matrix element for " << part.PDGName() << " -> "
// << outgoing[0]->PDGName() << " " << outgoing[1]->PDGName() << " "
// << me << " " << test << " " << (me-test)/(me+test) << "\n";
// return the answer
return me;
}
-bool PseudoScalar2FermionsDecayer::twoBodyMEcode(const DecayMode & dm,int & mecode,
- double & coupling) const {
+bool Scalar2FermionsDecayer::twoBodyMEcode(const DecayMode & dm,int & mecode,
+ double & coupling) const {
int imode(-1);
int id(dm.parent()->id()),idbar(id);
if(dm.parent()->CC()){idbar=dm.parent()->CC()->id();}
ParticleMSet::const_iterator pit(dm.products().begin());
int id1((**pit).id()),id1bar(id1);
if((**pit).CC()){id1bar=(**pit).CC()->id();}
++pit;
int id2((**pit).id()),id2bar(id2);
if((**pit).CC()){id2bar=(**pit).CC()->id();}
unsigned int ix(0); bool order(false);
do {
if(id ==incoming_[ix]) {
if(id1==outgoing_[ix].first&&id2==outgoing_[ix].second) {
imode=ix;
order=true;
}
if(id2==outgoing_[ix].first&&id1==outgoing_[ix].second) {
imode=ix;
order=false;
}
}
if(idbar==incoming_[ix]&&imode<0) {
if(id1bar==outgoing_[ix].first&&id2bar==outgoing_[ix].second) {
imode=ix;
order=true;
}
if(id2bar==outgoing_[ix].first&&id1bar==outgoing_[ix].second) {
imode=ix;
order=false;
}
}
++ix;
}
while(ix<incoming_.size()&&imode<0);
coupling=coupling_[imode];
- mecode=2;
+ mecode=25;
return order;
}
// output the setup information for the particle database
-void PseudoScalar2FermionsDecayer::dataBaseOutput(ofstream & output,
- bool header) const {
+void Scalar2FermionsDecayer::dataBaseOutput(ofstream & output,
+ bool header) const {
if(header) output << "update decayers set parameters=\"";
// parameters for the DecayIntegrator base class
DecayIntegrator::dataBaseOutput(output,false);
// the rest of the parameters
for(unsigned int ix=0;ix<incoming_.size();++ix) {
output << "do " << name() << ":SetUpDecayMode " << incoming_[ix] << " "
<< outgoing_[ix].first << " " << outgoing_[ix].second << " "
<< coupling_[ix] << " " << maxweight_[ix] << "\n";
}
if(header) output << "\n\" where BINARY ThePEGName=\""
<< fullName() << "\";" << endl;
}
-string PseudoScalar2FermionsDecayer::setUpDecayMode(string arg) {
+string Scalar2FermionsDecayer::setUpDecayMode(string arg) {
// parse first bit of the string
string stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
// extract PDG code for the incoming particle
long in = stoi(stype);
tcPDPtr pData = getParticleData(in);
if(!pData)
return "Incoming particle with id " + std::to_string(in) + "does not exist";
if(pData->iSpin()!=PDT::Spin0)
return "Incoming particle with id " + std::to_string(in) + "does not have spin 1";
// and outgoing particles
stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
pair<long,long> out;
out.first = stoi(stype);
pData = getParticleData(out.first);
if(!pData)
return "First outgoing particle with id " + std::to_string(out.first) + "does not exist";
if(pData->iSpin()!=PDT::Spin1Half)
return "First outgoing particle with id " + std::to_string(out.first) + "does not have spin 1/2";
stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
out.second = stoi(stype);
pData = getParticleData(out.second);
if(!pData)
return "Second outgoing particle with id " + std::to_string(out.second) + "does not exist";
if(pData->iSpin()!=PDT::Spin1Half)
return "Second outgoing particle with id " + std::to_string(out.second) + "does not have spin 1/2";
// get the coupling
stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
double g = stof(stype);
// and the maximum weight
stype = StringUtils::car(arg);
arg = StringUtils::cdr(arg);
double wgt = stof(stype);
// store the information
incoming_.push_back(in);
outgoing_.push_back(out);
coupling_.push_back(g);
maxweight_.push_back(wgt);
// success
return "";
}
diff --git a/Decay/ScalarMeson/PseudoScalar2FermionsDecayer.h b/Decay/ScalarMeson/Scalar2FermionsDecayer.h
copy from Decay/ScalarMeson/PseudoScalar2FermionsDecayer.h
copy to Decay/ScalarMeson/Scalar2FermionsDecayer.h
--- a/Decay/ScalarMeson/PseudoScalar2FermionsDecayer.h
+++ b/Decay/ScalarMeson/Scalar2FermionsDecayer.h
@@ -1,195 +1,195 @@
// -*- C++ -*-
-#ifndef Herwig_PseudoScalar2FermionsDecayer_H
-#define Herwig_PseudoScalar2FermionsDecayer_H
+#ifndef Herwig_Scalar2FermionsDecayer_H
+#define Herwig_Scalar2FermionsDecayer_H
//
-// This is the declaration of the PseudoScalar2FermionsDecayer class.
+// This is the declaration of the Scalar2FermionsDecayer class.
//
#include "Herwig/Decay/DecayIntegrator.h"
#include "Herwig/Decay/PhaseSpaceMode.h"
#include "ThePEG/Helicity/LorentzSpinorBar.h"
namespace Herwig {
using namespace ThePEG;
/**
- * The PseudoScalar2FermionsDecayer class is designed for the decay of a pseudoscalar meson to
- * two fermions, in reality this is always the decay of the \f$\eta_c\f$ to a baryon
+ * The Scalar2FermionsDecayer class is designed for the decay of ascalar meson to
+ * two fermions, in reality this is always the decay of the \f$\chi_{c0}\f$ to a baryon
* antibaryon pair.
*
- * @see \ref PseudoScalar2FermionsDecayerInterfaces "The interfaces"
- * defined for PseudoScalar2FermionsDecayer.
+ * @see \ref Scalar2FermionsDecayerInterfaces "The interfaces"
+ * defined for Scalar2FermionsDecayer.
*/
-class PseudoScalar2FermionsDecayer: public DecayIntegrator {
+class Scalar2FermionsDecayer: public DecayIntegrator {
public:
/**
* The default constructor.
*/
- PseudoScalar2FermionsDecayer();
+ Scalar2FermionsDecayer();
/**
* Which of the possible decays is required
* @param cc Is this mode the charge conjugate
* @param parent The decaying particle
* @param children The decay products
*/
virtual int modeNumber(bool & cc, tcPDPtr parent,
const tPDVector & children) const;
/**
* Return the matrix element squared for a given mode and phase-space channel.
* @param ichan The channel we are calculating the matrix element for.
* @param part The decaying Particle.
* @param outgoing The particles produced in the decay
* @param momenta The momenta of the particles produced in the decay
* @param meopt Option for the calculation of the matrix element
* @return The matrix element squared for the phase-space configuration.
*/
double me2(const int ichan,const Particle & part,
const tPDVector & outgoing,
const vector<Lorentz5Momentum> & momenta,
MEOption meopt) const;
/**
* Construct the SpinInfos for the particles produced in the decay
*/
virtual void constructSpinInfo(const Particle & part,
ParticleVector outgoing) const;
/**
* Specify the \f$1\to2\f$ matrix element to be used in the running width calculation.
* @param dm The DecayMode
* @param mecode The code for the matrix element as described
* in the GenericWidthGenerator class, in this case 2.
* @param coupling The coupling for the matrix element.
* @return True or False if this mode can be handled.
*/
bool twoBodyMEcode(const DecayMode & dm, int & mecode, double & coupling) const;
/**
* Output the setup information for the particle database
* @param os The stream to output the information to
* @param header Whether or not to output the information for MySQL
*/
virtual void dataBaseOutput(ofstream & os,bool header) const;
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:
/** @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;
//@}
protected:
/** @name Standard Interfaced functions. */
//@{
/**
* Initialize this object after the setup phase before saving and
* EventGenerator to disk.
* @throws InitException if object could not be initialized properly.
*/
virtual void doinit();
/**
* Initialize this object to the begining of the run phase.
*/
virtual void doinitrun();
//@}
private:
/**
* The assignment operator is private and must never be called.
* In fact, it should not even be implemented.
*/
- PseudoScalar2FermionsDecayer & operator=(const PseudoScalar2FermionsDecayer &) = delete;
+ Scalar2FermionsDecayer & operator=(const Scalar2FermionsDecayer &) = delete;
public:
/**
* Set the parameters for a decay mode
*/
string setUpDecayMode(string arg);
private:
/**
* coupling for a decay
*/
vector<double> coupling_;
/**
* the PDG codes for the incoming particles
*/
vector<long> incoming_;
/**
* the PDG codes for the outgoing fermion-antifermion
*/
vector<pair<long,long>> outgoing_;
/**
* maximum weight for a decay
*/
vector<double> maxweight_;
/**
* Spin density matrix
*/
mutable RhoDMatrix rho_;
/**
* Spinors for the decay products
*/
mutable vector<Helicity::LorentzSpinor <SqrtEnergy> > wave_;
/**
* barred spinors for the decay products
*/
mutable vector<Helicity::LorentzSpinorBar<SqrtEnergy> > wavebar_;
};
}
-#endif /* Herwig_PseudoScalar2FermionsDecayer_H */
+#endif /* Herwig_Scalar2FermionsDecayer_H */