bool MelaReweighterWW::recast(){
if (_candModified)
delete _candModified;
MELACandidate* melaCand = _mela->getCurrentCandidate();
_recaster->copyCandidate(melaCand, _candModified);
_recaster->reduceJJtoQuarks(_candModified);
_mela->setCurrentCandidate(_candModified);
if (std::isnan(_candModified->getSortedDaughter(0)->t()))
return false;
return true;
}
float MelaReweighterWW::weightStoH(){
//setupDaughters(_isVBF, id_l1, id_l2, id_n1, id_n2, l1, l2, n1, n2, associated, idsAssociated);
float meSpow;
_mela->setProcess(TVar::HSMHiggs, TVar::MCFM, _isVBF ? TVar::JJVBF_S : TVar::ZZGG);
// Added here -- U. Sarica
_mela->setMelaHiggsMassWidth(_mpole, _width, 0);
//
if (!_isVBF)
_mela->computeP(meSpow, false);
else
_mela->computeProdDecP(meSpow, false);
float meH;
_mela->setProcess(TVar::HSMHiggs, TVar::MCFM, _isVBF ? TVar::JJVBF : TVar::ZZGG);
//Added here -- U. Sarica
_mela->setMelaHiggsMassWidth(125., 4.07e-3, 0);
//
if (!_isVBF)
_mela->computeP(meH, false);
else
_mela->computeProdDecP(meH, false);
//_mela->resetInputEvent();
//std::cout << "### meS = " << meS << " meSpow = " << meSpow << " meB = " << meB << " meSBI = " << meSBI << std::endl;
//std::cout << "### weight = " << (meSBI-meS-meB)/meSpow << std::endl;
return (meH)/meSpow;
}
float getSuperMELA(Mela& myMela, int lepId[4], float mZZ, TVar::SuperMelaSyst syst){
float myprob=1.0;
TVar::LeptonFlavor myflavor=TVar::Flavor_Dummy;
if(abs(lepId[0])==abs(lepId[1]) &&
abs(lepId[0])==abs(lepId[2]) &&
abs(lepId[0])==abs(lepId[3])){
if(abs(lepId[0])==11) myflavor=TVar::Flavor_4e;
else myflavor=TVar::Flavor_4mu;
}
else myflavor=TVar::Flavor_2e2mu;
if(myflavor!=TVar::Flavor_Dummy) myMela.computePM4l(mZZ,
myflavor,
syst,
myprob
);
return myprob;
};
float getJHUGenMELAWeight(Mela& myMela, int lepId[4], float angularOrdered[8], double selfDHvvcoupl[SIZE_HVV][2]){
float myprob=1.0;
int myflavor=-1;
if(abs(lepId[0])==abs(lepId[1]) &&
abs(lepId[0])==abs(lepId[2]) &&
abs(lepId[0])==abs(lepId[3])){
if(abs(lepId[0])==11) myflavor=1;
else myflavor=2;
}
else myflavor=3;
if(myflavor>=0) myMela.computeP(angularOrdered[0],angularOrdered[1],angularOrdered[2],angularOrdered[3],
angularOrdered[4],angularOrdered[5],angularOrdered[6],angularOrdered[7],
myflavor,
selfDHvvcoupl,
myprob
);
return myprob;
};
float getMCFMMELAWeight(Mela& myMela, int lepId[4], float angularOrdered[8], double ggcoupl[2],int useConstant=0){
float myprob=1.0;
int myflavor=-1;
if(abs(lepId[0])==abs(lepId[1]) &&
abs(lepId[0])==abs(lepId[2]) &&
abs(lepId[0])==abs(lepId[3])){
if(abs(lepId[0])==11) myflavor=1;
else myflavor=2;
}
else myflavor=3;
if(myflavor>=0) myMela.computeP(angularOrdered[0],angularOrdered[1],angularOrdered[2],angularOrdered[3],
angularOrdered[4],angularOrdered[5],angularOrdered[6],angularOrdered[7],
myflavor,
myprob,
useConstant
);
return myprob;
};
float MelaReweighterWW::weightStoB(){
//setupDaughters(_isVBF, id_l1, id_l2, id_n1, id_n2, l1, l2, n1, n2, associated, idsAssociated);
float meS;
_mela->setProcess(TVar::HSMHiggs, TVar::MCFM, _isVBF ? TVar::JJVBF_S : TVar::ZZGG);
// Added here -- U. Sarica
_mela->setMelaHiggsMassWidth(_mpole, _width, 0);
_mela->setMelaHiggsMassWidth(125., 4.07e-3, 1);
//
if (!_isVBF)
_mela->computeP(meS, false);
else
_mela->computeProdDecP(meS, false);
float meB;
_mela->setProcess(TVar::bkgWW, TVar::MCFM, _isVBF ? TVar::JJEW : TVar::ZZGG);
if (!_isVBF)
_mela->computeP(meB, false);
else
_mela->computeProdDecP(meB, false);
//_mela->resetInputEvent();
return meB/meS;
}
void MelaReweighterWW::setupDaughters(bool isVBF, const int& id_l1, const int& id_l2, const int& id_n1, const int& id_n2,
const TLorentzVector& l1, const TLorentzVector& l2, const TLorentzVector& n1, const TLorentzVector& n2,
const std::vector<TLorentzVector>& associated, const std::vector<int>& idsAssociated,
const std::vector<TLorentzVector>& mothers, const std::vector<int>& idsMothers){
_isVBF=isVBF;
_daughters->clear();
_daughters->push_back(SimpleParticle_t(id_l1, l1));
_daughters->push_back(SimpleParticle_t(id_l2, l2));
_daughters->push_back(SimpleParticle_t(id_n1, n1));
_daughters->push_back(SimpleParticle_t(id_n2, n2));
_associated->clear();
for (unsigned int i = 0; i < associated.size(); ++i){
_associated->push_back(SimpleParticle_t(idsAssociated[i], associated[i]));
}
_mothers->clear();
bool hasOneGluon = false;
for (unsigned int i = 0; i < mothers.size(); ++i){
_mothers->push_back(SimpleParticle_t(idsMothers[i], mothers[i]));
if (idsMothers[i] == 22)
hasOneGluon = true;
}
if (_candModified != 0){
delete _candModified;
_candModified = 0;
}
_mela->resetInputEvent();
//check charge
double chargeIn = 0;
for (unsigned int i = 0; i < _mothers->size(); ++i){
MELAParticle p(_mothers->at(i).first, _mothers->at(i).second);
chargeIn+=p.charge();
}
double chargeOut = 0;
for (unsigned int i = 0; i < _associated->size(); ++i){
MELAParticle p(_associated->at(i).first, _associated->at(i).second);
chargeOut+=p.charge();
}
bool toRecast=true;
if (chargeIn != chargeOut){
toRecast = false;
//just kill the unwanted particle
for (unsigned int i = 0; i < _associated->size(); ++i){
int id=_associated->at(i).first;
bool antiParticleInInitialState=false;
for (unsigned int j = 0; j < _mothers->size(); ++j){
if (id==-_mothers->at(j).first){
//cout << "Skipping " << id << endl;
antiParticleInInitialState=true;
}
}
if (antiParticleInInitialState)
_associated->erase(_associated->begin()+i);
}
}
_mela->setInputEvent(_daughters, _associated, _mothers, true);
if (isVBF){
bool recasted = recast();
if (!recasted) {
//just remove the gluon
for (unsigned int i = 0; i < _associated->size(); ++i){
int id=_associated->at(i).first;
if (id == 21)
_associated->erase(_associated->begin()+i);
}
_mela->setInputEvent(_daughters, _associated, _mothers, true);
}
}
}
void MelaReweighterWW::resetMCFM_EWKParameters(double Gf, double alphaEW, double mW, double mZ, double sin2thetaW){
_mela->resetMCFM_EWKParameters(Gf, alphaEW, mW, mZ, sin2thetaW);
}