GenParticle * Event::GetGenStable( int iGenPar ,int pdgid,float aeta)
{
// status 1, electrons
vector<pair<float,int> > valid; // pt, idx
for(int i = 0 ; i<genparticles_.size() ;++i)
{
GenParticle *gp = genparticles_[i];
if (not gp->IsPromptFinalState() ) continue;
if ( abs(gp->GetPdgId()) != pdgid) continue;
if ( fabs(gp->Eta() ) > aeta) continue;
valid.push_back(pair<float,int>(gp->Pt(),i));
}
if (valid.size() == 0 ) return NULL;
if (valid.size() <= iGenPar ) return NULL;
sort(valid.begin(),valid.end(),[](pair<float,int> &a,pair<float,int> &b) { if (a.first> b.first) return true; if (a.first<b.first) return false; return a.second<b.second;} ) ;
return genparticles_[ valid[iGenPar].second];
}
void ChargedHiggsTauNu::analyzeGen(Event*e, string systname)
{
// no systematics shifts for this
if (systname !="" and systname != "NONE") return;
string label = GetLabel(e);
Weight* w = e->GetWeight();
// make sure we don't book sf or corrections here
double mcWeight=w->GetBareMCWeight() * w->GetBarePUWeight()* w->GetBareMCXsec() * w->GetBareLumi() / w->GetBareNevents();
Fill("ChargedHiggsTauNu/Gen/CutFlow_"+label,systname,0,mcWeight);
// find the H+
int iHpm=-1;
int iTau=-1;
int iLFromTau=-1; // find leptonic taus
int iIsoL = -1; // is there an isolated lepton ?
for(unsigned i = 0 ; ;++i)
{
GenParticle *g = e->GetGenParticle(i);
if (g==NULL) break; //exit condition
int apdg = abs(g->GetPdgId());
if (iHpm <0 and apdg == 37 ) { iHpm = i; }
if (iTau <0 and apdg == 15 ) { iTau = i; }
if (iLFromTau <0 and (apdg == 11 or apdg == 13) and e->GenParticleDecayedFrom(i,15) ) { iLFromTau = i; }
if (iIsoL <0 and (apdg == 11 or apdg == 13) and g->IsPromptFinalState() and g->Pt() >10 and abs(g->Eta())<2.4){
float iso = 0.0;
for(unsigned j = 0 ; ;++j)
{
if (i == j ) continue; // no double counting;
GenParticle *g2 = e->GetGenParticle(j);
if (g2 == NULL) break;
if (not g2->IsPromptFinalState()) continue;
if (g2->IsDressed() ) continue; // no dressed leptons
if (g2->DeltaR(g) >0.1) continue;
iso += g2->Pt();
}
if (iso<10) iIsoL = i;
}
}
bool lepVeto=false;
if (e->Nleps() ==0 ) lepVeto=true;
else if( e->GetMuon(0) == NULL){ // no 10 GeV muon
if (e->GetElectron(0) !=NULL and e->GetElectron(0)->Pt() <15) lepVeto=true; // pt ordered
}
vector<Lepton*> miniIsoLeptons;
bool lepVetoMiniIso=true;
for(unsigned il=0 ; ;++il)
{
Lepton *l = e->GetBareLepton(il);
if (l == NULL) break; // exit strategy
// selection
if (l->Pt() <10 ) continue;
//l->SetIsoRelCut(0.25);
if (abs(l->Eta()) >2.4) continue;
//medium id
if( not l->GetMediumId() ) continue;
//MINI-ISO
if( l->MiniIsolation() >0.4 ) continue;//loose
// for muons require tracker and global
if (l->IsMuonDirty() and not l->GetTrackerMuon()) continue;
if (l->IsMuonDirty() and not l->GetGlobalMuon()) continue;
// selected leptons
miniIsoLeptons.push_back(l);
lepVetoMiniIso=false;
}
// sort miniIsoLeptons by pt
std::sort(miniIsoLeptons.begin(),miniIsoLeptons.end(),[](Lepton const *a, Lepton const *b ){return a->Pt() > b->Pt();});
if (iHpm >=0 ) Fill("ChargedHiggsTauNu/Gen/CutFlow_"+label,systname,1,mcWeight);
if (iHpm >=0 and iTau>=0 ) Fill("ChargedHiggsTauNu/Gen/CutFlow_"+label,systname,2,mcWeight);
if (iHpm >=0 and iTau>=0 and iLFromTau<0){
Fill("ChargedHiggsTauNu/Gen/CutFlow_"+label,systname,3,mcWeight);
if (iIsoL <0) Fill("ChargedHiggsTauNu/Gen/CutFlow_"+label,systname,4,mcWeight);
if (lepVeto) Fill("ChargedHiggsTauNu/Gen/CutFlow_"+label,systname,5,mcWeight);
if (lepVetoMiniIso ) Fill("ChargedHiggsTauNu/Gen/CutFlow_"+label,systname,6,mcWeight);
}
}
