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#include <vector>
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#include "MathUtils.h"
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#include "FSR.h"
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#include "CommonDefs.h"
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#include "TLorentzVector.h"
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using namespace std;
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extern vector<bool> PFnoPUflag;
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//--------------------------------------------------------------------------------------------------
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double betaCorrectedIso(ControlFlags & ctrl,
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const mithep::PFCandidate * photon,
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const mithep::Array<mithep::PFCandidate> * fPFCandidates )
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//--------------------------------------------------------------------------------------------------
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{
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//
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// final iso
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//
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Double_t fChargedIso = 0.0;
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Double_t fGammaIso = 0.0;
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Double_t fNeutralHadronIso = 0.0;
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//
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// Loop over PF Candidates
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//
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for(int k=0; k<fPFCandidates->GetEntries(); ++k) {
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if( !(PFnoPUflag[k]) ) continue; // my PF no PU hack
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const mithep::PFCandidate *pf = (mithep::PFCandidate*)((*fPFCandidates)[k]);
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Double_t deta = (photon->Eta() - pf->Eta());
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Double_t dphi = mithep::MathUtils::DeltaPhi(Double_t(photon->Phi()),Double_t(pf->Phi()));
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Double_t dr = mithep::MathUtils::DeltaR(photon->Phi(),photon->Eta(), pf->Phi(), pf->Eta());
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if (dr > 0.4) continue;
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// skip this photon
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if( abs(pf->PFType()) == mithep::PFCandidate::eGamma &&
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pf->Et() == photon->Et() ) continue;
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if (dr < 1.0) {
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//
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// Charged Iso
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//
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if (pf->Charge() != 0 && (pf->HasTrackerTrk()||pf->HasGsfTrk()) ) {
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if( dr < 0.01 ) continue;
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// if (abs(pf->PFType()) == mithep::PFCandidate::eElectron ||
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// abs(pf->PFType()) == mithep::PFCandidate::eMuon) continue;
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fChargedIso += pf->Pt();
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}
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//
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// Gamma Iso
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//
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else if (abs(pf->PFType()) == mithep::PFCandidate::eGamma) {
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if( pf->Pt() > 0.5 && dr > 0.08) // need the inner veto?
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fGammaIso += pf->Pt();
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}
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//
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// Other Neutrals
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//
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else {
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// KH, add to sync
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if( pf->Pt() > 0.5 )
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fNeutralHadronIso += pf->Pt();
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}
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}
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}
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double pfIso = fChargedIso + fGammaIso + fNeutralHadronIso;
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return pfIso;
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}
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//--------------------------------------------------------------------------------------------------
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// typeI = PF IDed photons. NB : repurpose PFnoPUflag, flip for recovered photons
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// so that they are skipped in the isolation calculation
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//--------------------------------------------------------------------------------------------------
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bool recover_typeI_Photon( ControlFlags & ctrl,
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mithep::Muon * mu,
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const mithep::Array<mithep::PFCandidate> * pfArr )
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//--------------------------------------------------------------------------------------------------
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{
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vector<int> photonIndices;
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for( int i=0; i<pfArr->GetEntries(); i++ ) {
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if( !(PFnoPUflag[i])) continue; // my PF no PU hack
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const mithep::PFCandidate *pf = (mithep::PFCandidate*)((*pfArr)[i]);
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if( abs(pf->PFType()) == mithep::PFCandidate::eGamma &&
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pf->Pt() > 2.0 && fabs(pf->Eta()) < 2.4 ) {
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float dR = mithep::MathUtils::DeltaR(pf->Phi(),pf->Eta(), mu->Phi(), mu->Eta());
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// "keep all photons close to one of the 4L muons ..."
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if( dR < 0.07 ) photonIndices.push_back(i);
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// "need tighter cuts for other photons ..."
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if( dR < 0.5 && pf->Pt() > 4. && betaCorrectedIso(ctrl, pf, pfArr)/pf->Pt() < 1.0)
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photonIndices.push_back(i);
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}
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int index=-1;
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float highest_pt = -1;
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const mithep::PFCandidate * thepf;
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for( int i=0; i<photonIndices.size(); i++ ) {
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const mithep::PFCandidate *pf = (mithep::PFCandidate*)(pfArr->At(photonIndices[i]));
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if( pf->Pt() > highest_pt ) {
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thepf = pf;
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highest_pt = pf->Pt();
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index = photonIndices[i];
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}
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}
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if( thepf != NULL ) {
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// "... remove it from lepton isolation ..."
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PFnoPUflag[index] = 1;
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// add to the muon
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TLorentzVector muvec,phvec,newmuvec;
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muvec.SetPtEtaPhiM( mu->Pt(), mu->Eta(), mu->Phi(), MUON_MASS);
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phvec.SetPtEtaPhiM( thepf->Pt(), thepf->Eta(), thepf->Phi(), 0.);
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newmuvec = muvec+phvec;
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mu->SetPtEtaPhi (newmuvec.Pt(),
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newmuvec.Eta(),
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newmuvec.Phi());
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return true;
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}
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}
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return false;
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}
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//--------------------------------------------------------------------------------------------------
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// typeII = "PFClusters linked to muons"
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//--------------------------------------------------------------------------------------------------
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bool recover_typeII_Photon( ControlFlags & ctrl,
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mithep::Muon * mu,
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const mithep::Array<mithep::PFCandidate> * pfArr )
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//--------------------------------------------------------------------------------------------------
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{
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bool foundPF=false;
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const mithep::PFCandidate * thepf;
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for( int i=0; i<pfArr->GetEntries(); i++ ) {
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if( !(PFnoPUflag[i]) ) continue; // my PF no PU hack
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const mithep::PFCandidate *pf = (mithep::PFCandidate*)((*pfArr)[i]);
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if( (pf->TrackerTrk() == mu->TrackerTrk()) && abs(pf->PFType()) == mithep::PFCandidate::eMuon ) {
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foundPF = true;
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thepf = pf;
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break;
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}
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}
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if( foundPF ) {
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double sintet = thepf->Pt()/thepf->E();
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double phpt = thepf->EECal() * sintet;
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if ( thepf->EECal() >= 2.0 && phpt >= 2.0 ) {
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mu->SetPtEtaPhi (mu->Pt()+phpt,
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mu->Eta(),
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mu->Phi());
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return true;
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}
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}
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return false;
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}
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