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/data/refman/pasoursint/CMSSW_5_3_1/src/JetMETCorrections/Type1MET/src/TauMETAlgo.cc

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00001 // File: TauMETAlgo.cc
00002 // Description:  see TauMETAlgo.h
00003 // Authors: Alfredo Gurrola, C.N.Nguyen
00004 
00005 #include "JetMETCorrections/Type1MET/interface/TauMETAlgo.h"
00006 #include "DataFormats/Math/interface/deltaR.h"
00007 
00008 using namespace std;
00009 using namespace reco;
00010 
00011 typedef math::XYZTLorentzVector LorentzVector;
00012 typedef math::XYZPoint Point;
00013 
00014   TauMETAlgo::TauMETAlgo() {}
00015   TauMETAlgo::~TauMETAlgo() {}
00016 
00017   void TauMETAlgo::run(edm::Event& iEvent,const edm::EventSetup& iSetup,
00018                        edm::Handle<PFTauCollection> tauHandle,edm::Handle<CaloJetCollection> calojetHandle,
00019                        double jetPTthreshold,double jetEMfracLimit,
00020                        const JetCorrector& correctedjets,const std::vector<CaloMET>& uncorMET,double jetMatchDeltaR,
00021                        double tauMinEt,double tauEtaMax,bool useSeedTrack,double seedTrackPt,bool useTrackIsolation,double trackIsolationMinPt,
00022                        bool useECALIsolation,double gammaIsolationMinPt,bool useProngStructure,std::vector<CaloMET>* corrMET) {
00023 
00024     //    std::cerr << "TauMETAlgo::run -> Test.. " << std::endl;
00025 
00026     double DeltaPx = 0.0;
00027     double DeltaPy = 0.0;
00028     double DeltaSumET = 0.0;
00029     for(PFTauCollection::size_type iPFTau=0;iPFTau<tauHandle->size();iPFTau++) {
00030       PFTauRef thePFTau(tauHandle,iPFTau);
00031       bool matchFlag = false;
00032       bool goodTau = false;
00033       if((fabs(thePFTau->eta()) <= tauEtaMax) && (thePFTau->et() >= tauMinEt)) {
00034         goodTau = true;
00035         if(useSeedTrack) {
00036           if(!(thePFTau->leadPFChargedHadrCand())) {goodTau = false;}
00037           else {
00038             if(thePFTau->leadPFChargedHadrCand()->et() < seedTrackPt) {goodTau = false;}
00039           }
00040         }
00041         if(useTrackIsolation) {
00042           PFCandidateRefVector PFTauProdIsolCHCands = (*thePFTau).isolationPFChargedHadrCands();
00043           for(PFCandidateRefVector::const_iterator iChargedHadrCand=PFTauProdIsolCHCands.begin();
00044               iChargedHadrCand!=PFTauProdIsolCHCands.end();++iChargedHadrCand) {
00045             if((**iChargedHadrCand).pt() > trackIsolationMinPt) {goodTau = false;}
00046           }
00047         }
00048         if(useECALIsolation) {
00049           PFCandidateRefVector PFTauProdIsolGammaCands = (*thePFTau).isolationPFGammaCands();
00050           for(PFCandidateRefVector::const_iterator iGammaCand=PFTauProdIsolGammaCands.begin();
00051               iGammaCand!=PFTauProdIsolGammaCands.end();++iGammaCand) {
00052             if((**iGammaCand).et() > gammaIsolationMinPt) {goodTau = false;}
00053           }
00054         }
00055         if(useProngStructure) {
00056           if((thePFTau->signalPFChargedHadrCands().size() != 1) && (thePFTau->signalPFChargedHadrCands().size() != 3)) {goodTau = false;}
00057         }
00058       }
00059       if(goodTau) {
00060         for(CaloJetCollection::const_iterator calojetIter = calojetHandle->begin();calojetIter != calojetHandle->end();++calojetIter) {
00061           if(deltaR(calojetIter->p4(),thePFTau->p4())<jetMatchDeltaR) {
00062             if( calojetIter->pt() > jetPTthreshold && calojetIter->emEnergyFraction() < jetEMfracLimit ) {
00063               double correct = correctedjets.correction (*calojetIter);
00064               DeltaPx += ((correct * calojetIter->px()) - thePFTau->px());
00065               DeltaPy += ((correct * calojetIter->py()) - thePFTau->py());
00066               DeltaSumET += ((correct * calojetIter->et()) - thePFTau->et());
00067             } else {
00068               DeltaPx += (calojetIter->px() - thePFTau->px());
00069               DeltaPy += (calojetIter->py() - thePFTau->py());
00070               DeltaSumET += (calojetIter->et() - thePFTau->et());
00071             }
00072             if(matchFlag) {std::cerr << "### TauMETAlgo - ERROR:  Multiple jet matches!!!! " << std::endl;}
00073             matchFlag = true;
00074           }
00075         }
00076       }
00077     }
00078     CorrMETData delta;
00079     delta.mex = DeltaPx;
00080     delta.mey = DeltaPy;
00081     delta.sumet = - DeltaSumET;
00082     const CaloMET* u = &(uncorMET.front());
00083     double corrMetPx = u->px() + delta.mex;
00084     double corrMetPy = u->py() + delta.mey;
00085     MET::LorentzVector correctedMET4vector( corrMetPx, corrMetPy, 0., sqrt(corrMetPx*corrMetPx + corrMetPy*corrMetPy));
00086     std::vector<CorrMETData> corrections = u->mEtCorr();
00087     corrections.push_back(delta);
00088     CaloMET result;
00089     result = CaloMET(u->getSpecific(), (u->sumEt() + delta.sumet), corrections, correctedMET4vector, u->vertex());
00090     corrMET->push_back(result);
00091   }
00092 
00093   void TauMETAlgo::run(edm::Event& iEvent,const edm::EventSetup& iSetup,
00094                        edm::Handle<PFTauCollection> tauHandle,edm::Handle<CaloJetCollection> calojetHandle,
00095                        double jetPTthreshold,double jetEMfracLimit,
00096                        const JetCorrector& correctedjets,const std::vector<MET>& uncorMET,double jetMatchDeltaR,
00097                        double tauMinEt,double tauEtaMax,bool useSeedTrack,double seedTrackPt,bool useTrackIsolation,double trackIsolationMinPt,
00098                        bool useECALIsolation,double gammaIsolationMinPt,bool useProngStructure,std::vector<MET>* corrMET) {
00099 
00100     std::cerr << "TauMETAlgo::run -> Test.. " << std::endl;
00101 
00102     double DeltaPx = 0.0;
00103     double DeltaPy = 0.0;
00104     double DeltaSumET = 0.0;
00105     for(PFTauCollection::size_type iPFTau=0;iPFTau<tauHandle->size();iPFTau++) {
00106       PFTauRef thePFTau(tauHandle,iPFTau);
00107       bool matchFlag = false;
00108       bool goodTau = false;
00109       if((fabs(thePFTau->eta()) <= tauEtaMax) && (thePFTau->et() >= tauMinEt)) {
00110         goodTau = true;
00111         if(useSeedTrack) {
00112           if(!(thePFTau->leadPFChargedHadrCand())) {goodTau = false;}
00113           else {
00114             if(thePFTau->leadPFChargedHadrCand()->et() < seedTrackPt) {goodTau = false;}
00115           }
00116         }
00117         if(useTrackIsolation) {
00118           PFCandidateRefVector PFTauProdIsolCHCands = (*thePFTau).isolationPFChargedHadrCands();
00119           for(PFCandidateRefVector::const_iterator iChargedHadrCand=PFTauProdIsolCHCands.begin();
00120               iChargedHadrCand!=PFTauProdIsolCHCands.end();++iChargedHadrCand) {
00121             if((**iChargedHadrCand).pt() > trackIsolationMinPt) {goodTau = false;}
00122           }
00123         }
00124         if(useECALIsolation) {
00125           PFCandidateRefVector PFTauProdIsolGammaCands = (*thePFTau).isolationPFGammaCands();
00126           for(PFCandidateRefVector::const_iterator iGammaCand=PFTauProdIsolGammaCands.begin();
00127               iGammaCand!=PFTauProdIsolGammaCands.end();++iGammaCand) {
00128             if((**iGammaCand).et() > gammaIsolationMinPt) {goodTau = false;}
00129           }
00130         }
00131         if(useProngStructure) {
00132           if((thePFTau->signalPFChargedHadrCands().size() != 1) && (thePFTau->signalPFChargedHadrCands().size() != 3)) {goodTau = false;}
00133         }
00134       }
00135       if(goodTau) {
00136         for(CaloJetCollection::const_iterator calojetIter = calojetHandle->begin();calojetIter != calojetHandle->end();++calojetIter) {
00137           if(deltaR(calojetIter->p4(),thePFTau->p4())<jetMatchDeltaR) {
00138             if( calojetIter->pt() > jetPTthreshold && calojetIter->emEnergyFraction() < jetEMfracLimit ) {
00139               double correct = correctedjets.correction (*calojetIter);
00140               DeltaPx += ((correct * calojetIter->px()) - thePFTau->px());
00141               DeltaPy += ((correct * calojetIter->py()) - thePFTau->py());
00142               DeltaSumET += ((correct * calojetIter->et()) - thePFTau->et());
00143             } else {
00144               DeltaPx += (calojetIter->px() - thePFTau->px());
00145               DeltaPy += (calojetIter->py() - thePFTau->py());
00146               DeltaSumET += (calojetIter->et() - thePFTau->et());
00147             }
00148             if(matchFlag) {std::cerr << "### TauMETAlgo - ERROR:  Multiple jet matches!!!! " << std::endl;}
00149             matchFlag = true;
00150           }
00151         }
00152       }
00153     }
00154     CorrMETData delta;
00155     delta.mex = DeltaPx;
00156     delta.mey = DeltaPy;
00157     delta.sumet = - DeltaSumET;
00158     const MET* u = &(uncorMET.front());
00159     double corrMetPx = u->px() + delta.mex;
00160     double corrMetPy = u->py() + delta.mey;
00161     MET::LorentzVector correctedMET4vector( corrMetPx, corrMetPy, 0., sqrt(corrMetPx*corrMetPx + corrMetPy*corrMetPy));
00162     std::vector<CorrMETData> corrections = u->mEtCorr();
00163     corrections.push_back(delta);
00164     MET result;
00165     result = MET((u->sumEt() + delta.sumet), corrections, correctedMET4vector, u->vertex());
00166     corrMET->push_back(result);
00167   }
00168