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#include "treeWriter.h"
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using namespace std;
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TreeWriter::TreeWriter( std::string inputName, std::string outputName, int loggingVerbosity_ ) {
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// read the input file
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inputTree = new TChain("susyTree");
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if (loggingVerbosity_ > 0)
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std::cout << "Add files to chain" << std::endl;
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inputTree->Add( inputName.c_str() );
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Init( outputName, loggingVerbosity_ );
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}
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TreeWriter::TreeWriter( TChain* inputTree_, std::string outputName, int loggingVerbosity_ ) {
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inputTree = inputTree_;
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Init( outputName, loggingVerbosity_ );
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}
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void TreeWriter::Init( std::string outputName, int loggingVerbosity_ ) {
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if (loggingVerbosity_ > 0)
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std::cout << "Set Branch Address of susy::Event" << std::endl;
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event = new susy::Event;
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inputTree->SetBranchAddress("susyEvent", &event);
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// Here the number of proceeded events will be stored. For plotting, simply use L*sigma/eventNumber
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eventNumbers = new TH1F("eventNumbers", "Histogram containing number of generated events", 1, 0, 1);
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eventNumbers->GetXaxis()->SetBinLabel(1,"Number of generated events");
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// open the output file
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if (loggingVerbosity_>0)
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std::cout << "Open file " << outputName << " for writing." << std::endl;
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outFile = new TFile( outputName.c_str(), "recreate" );
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tree = new TTree("susyTree","Tree for single photon analysis");
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// set default parameter
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processNEvents = -1;
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reportEvery = 1000;
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loggingVerbosity = loggingVerbosity_;
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skim = true;
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pileupHisto = 0;
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}
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void TreeWriter::PileUpWeightFile( string pileupFileName ) {
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TFile *puFile = new TFile( pileupFileName.c_str() );
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pileupHisto = (TH1F*) puFile->Get("pileup");
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}
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TreeWriter::~TreeWriter() {
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if (pileupHisto != 0 )
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delete pileupHisto;
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inputTree->GetCurrentFile()->Close();
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delete inputTree;
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delete event;
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delete outFile;
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delete tree;
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}
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template<class Type>
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std::vector<Type>* getVectorFromMap( map<TString, vector<Type> > myMap, TString search ){
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// if nothing is found, return a empty vector (which has to be deleted never the less)
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std::vector<Type>* vec;
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typename map<TString, vector<Type> >::iterator mapIt = myMap.find( search );
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if( mapIt == myMap.end() ) {
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cout << "ERROR: Collection \"" << search << "\" not found!" << endl;
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vec = new std::vector<Type>;
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} else
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vec = &mapIt->second;
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cout << vec->size() << endl;
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return vec;
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}
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// useful functions
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float deltaR( const TLorentzVector& v1, const TLorentzVector& v2 ) {
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// deltaR = sqrt ( deltaEta^2 + deltaPhi^2 )
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return sqrt(pow(v1.Eta() - v2.Eta(), 2) + pow(v1.Phi() - v2.Phi(), 2) );
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}
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float effectiveAreaElectron( float eta ) {
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// needed by calculating the isolation for electrons
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// see https://twiki.cern.ch/twiki/bin/view/CMS/EgammaEARhoCorrection
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// only for Delta R = 0.3 on 2012 Data
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eta = fabs( eta );
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float ea;
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if( eta < 1.0 ) ea = 0.13;
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else if( eta < 1.479 ) ea = 0.14;
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else if( eta < 2.0 ) ea = 0.07;
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else if( eta < 2.2 ) ea = 0.09;
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else if( eta < 2.3 ) ea = 0.11;
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else if( eta < 2.4 ) ea = 0.11;
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else ea = 0.14;
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return ea;
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}
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// correct iso, see https://twiki.cern.ch/twiki/bin/view/CMS/CutBasedPhotonID2012
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float chargedHadronIso_corrected(const susy::Photon& gamma, float rho) {
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float eta = fabs(gamma.caloPosition.Eta());
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float ea;
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if(eta < 1.0) ea = 0.012;
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else if(eta < 1.479) ea = 0.010;
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else if(eta < 2.0) ea = 0.014;
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else if(eta < 2.2) ea = 0.012;
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else if(eta < 2.3) ea = 0.016;
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else if(eta < 2.4) ea = 0.020;
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else ea = 0.012;
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float iso = gamma.chargedHadronIso;
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iso = max(iso - rho*ea, (float)0.);
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return iso;
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}
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float neutralHadronIso_corrected(const susy::Photon& gamma, float rho) {
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float eta = fabs(gamma.caloPosition.Eta());
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float ea;
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if(eta < 1.0) ea = 0.030;
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else if(eta < 1.479) ea = 0.057;
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else if(eta < 2.0) ea = 0.039;
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else if(eta < 2.2) ea = 0.015;
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else if(eta < 2.3) ea = 0.024;
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else if(eta < 2.4) ea = 0.039;
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else ea = 0.072;
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float iso = gamma.neutralHadronIso;
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iso = max(iso - rho*ea, (float)0.);
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return iso;
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}
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float photonIso_corrected(const susy::Photon& gamma, float rho) {
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float eta = fabs(gamma.caloPosition.Eta());
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float ea;
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if(eta < 1.0) ea = 0.148;
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else if(eta < 1.479) ea = 0.130;
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else if(eta < 2.0) ea = 0.112;
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else if(eta < 2.2) ea = 0.216;
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else if(eta < 2.3) ea = 0.262;
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else if(eta < 2.4) ea = 0.260;
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else ea = 0.266;
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float iso = gamma.photonIso;
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iso = max(iso - rho*ea, (float)0.);
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return iso;
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}
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float d0correction( const susy::Electron& electron, const susy::Event& event ) {
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// copied from Brian Francis
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TVector3 beamspot = event.vertices[0].position;
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susy::Track track = event.tracks[electron.gsfTrackIndex];
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float d0 = track.d0() - beamspot.X()*sin(track.phi()) + beamspot.Y()*cos(track.phi());
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return d0;
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}
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float dZcorrection( const susy::Electron& electron, const susy::Event& event ) {
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// copied from Brian Francis
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TVector3 beamspot = event.vertices[0].position;
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susy::Track track = event.tracks[electron.gsfTrackIndex];
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if(track.momentum.Pt() == 0.) return 1.e6;
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float dz = (track.vertex.Z() - beamspot.Z()) - ((track.vertex.X() - beamspot.X())*track.momentum.Px() + (track.vertex.Y() - beamspot.Y())*track.momentum.Py()) / track.momentum.Pt() * (track.momentum.Pz() / track.momentum.Pt());
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return dz;
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}
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float getPtFromMatchedJet( const susy::Photon& myPhoton, const susy::PFJetCollection& jetColl, int loggingVerbosity = 0 ) {
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/**
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* \brief Takes jet p_T as photon p_T
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*
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* At first all jets with DeltaR < 0.3 (isolation cone) are searched.
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* If several jets are found, take the one with the minimal pt difference
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* compared to the photon. If no such jets are found, keep the photon_pt
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* TODO: remove photon matched jet from jet-selection?
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*/
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std::vector<susy::PFJet> nearJets;
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nearJets.clear();
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for(std::vector<susy::PFJet>::const_iterator it = jetColl.begin();
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it != jetColl.end(); ++it) {
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float scale = 1.;
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std::map<TString,Float_t>::const_iterator s_it = it->jecScaleFactors.find("L2L3");
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if (s_it == it->jecScaleFactors.end()) {
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std::cout << "JEC is not available for this jet!!!" << std::endl;
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continue;
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} else {
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scale = s_it->second;
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}
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TLorentzVector corrP4 = scale * it->momentum;
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float deltaR_ = deltaR(myPhoton.momentum, corrP4 );
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if (deltaR_ > 0.3) continue;
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if( loggingVerbosity > 2 )
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std::cout << " pT_jet / pT_gamma = " << it->momentum.Et() / myPhoton.momentum.Et() << std::endl;
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nearJets.push_back( *it );
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}// for jet
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if ( nearJets.size() == 0 ) {
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if( loggingVerbosity > 1 )
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std::cout << "No jet with deltaR < .3 found, do not change photon_pt" << std::endl;
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return myPhoton.momentum.Et();
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}
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float pt = 0;
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float minPtDifferenz = 1E20; // should be very high
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for( std::vector<susy::PFJet>::iterator it = nearJets.begin(), jetEnd = nearJets.end();
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it != jetEnd; ++it ) {
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float ptDiff = fabs(myPhoton.momentum.Et() - it->momentum.Et());
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if ( ptDiff < minPtDifferenz ) {
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minPtDifferenz = ptDiff;
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pt = it->momentum.Et();
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}
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}
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// testing
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if( nearJets.size() > 1 && loggingVerbosity > 0 )
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std::cout << "There are several jets matching to this photon. "
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<< "Please check if jet-matching is correct." << std::endl;
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return pt;
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}
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void TreeWriter::Loop() {
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/**
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* \brief Loops over input chain and fills tree
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*
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* This is the major function of treeWriter, which initialize the output, loops
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* over all events and fill the tree. In the end, the tree is saved to the
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* output File
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*/
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// here the event loop is implemented and the tree is filled
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if (inputTree == 0) return;
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// get number of events to be proceeded
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Long64_t nentries = inputTree->GetEntries();
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// store them in histo
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eventNumbers->Fill( "Number of generated events", nentries );
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if(processNEvents <= 0 || processNEvents > nentries) processNEvents = nentries;
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if( loggingVerbosity > 0 )
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std::cout << "Processing " << processNEvents << " ouf of "
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<< nentries << " events. " << std::endl;
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tree->Branch("photon", &photon);
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tree->Branch("jet", &jet);
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tree->Branch("electron", &electron);
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tree->Branch("muon", &muon);
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tree->Branch("met", &met, "met/F");
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tree->Branch("metPhi", &met_phi, "metPhi/F");
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tree->Branch("type1met", &type1met, "type1met/F");
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tree->Branch("type1metPhi", &type1met_phi, "type1metPhi/F");
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tree->Branch("ht", &ht, "ht/F");
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tree->Branch("nVertex", &nVertex, "nVertex/I");
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tree->Branch("pu_weight", &pu_weight, "pu_weight/F");
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tree->Branch("genElectron", &genElectron);
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tree->Branch("genPhoton", &genPhoton);
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for (unsigned long jentry=0; jentry < processNEvents; ++jentry) {
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if ( loggingVerbosity>1 || jentry%reportEvery==0 )
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std::cout << jentry << " / " << processNEvents << std :: endl;
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inputTree->LoadTree( jentry );
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inputTree->GetEntry( jentry );
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photon.clear();
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jet.clear();
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electron.clear();
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muon.clear();
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genElectron.clear();
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genPhoton.clear();
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ht = 0;
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// weights
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if (pileupHisto == 0) {
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pu_weight = 1.;
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} else {
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float trueNumInteractions = -1;
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for( susy::PUSummaryInfoCollection::const_iterator iBX = event->pu.begin();
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iBX != event->pu.end() && trueNumInteractions < 0; ++iBX) {
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if (iBX->BX == 0)
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trueNumInteractions = iBX->trueNumInteractions;
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}
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pu_weight = pileupHisto->GetBinContent( pileupHisto->FindBin( trueNumInteractions ) );
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}
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// get ak5 jets
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std::vector<susy::PFJet> jetVector = event->pfJets["ak5"];
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// photons
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std::vector<susy::Photon> photonVector = event->photons["photons"];
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for(std::vector<susy::Photon>::iterator it = photonVector.begin();
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it != photonVector.end(); ++it ) {
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if( !(it->isEE() || it->isEB()) && it->isEBEtaGap() && it->isEBPhiGap() && it->isEERingGap() && it->isEEDeeGap() && it->isEBEEGap() && skim )
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continue;
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tree::Photon thisphoton;
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thisphoton.pt = getPtFromMatchedJet( *it, jetVector, loggingVerbosity );
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thisphoton.chargedIso = chargedHadronIso_corrected(*it, event->rho25);
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thisphoton.neutralIso = neutralHadronIso_corrected(*it, event->rho25);
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thisphoton.photonIso = photonIso_corrected(*it, event->rho25);
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bool loose_photon_barrel = thisphoton.pt>20
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&& it->isEB()
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&& it->passelectronveto
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&& it->hadTowOverEm<0.05
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&& it->sigmaIetaIeta<0.012
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&& thisphoton.chargedIso<2.6
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&& thisphoton.neutralIso<3.5+0.04*thisphoton.pt
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&& thisphoton.photonIso<1.3+0.005*thisphoton.pt;
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bool loose_photon_endcap = thisphoton.pt > 20
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&& it->isEE()
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&& it->passelectronveto
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&& it->hadTowOverEm<0.05
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&& it->sigmaIetaIeta<0.034
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&& thisphoton.chargedIso<2.3
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&& thisphoton.neutralIso<2.9+0.04*thisphoton.pt;
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if(!(loose_photon_endcap || loose_photon_barrel || thisphoton.pt > 75 ) && skim )
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continue;
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thisphoton.eta = it->momentum.Eta();
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thisphoton.phi = it->momentum.Phi();
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thisphoton.r9 = it->r9;
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thisphoton.sigmaIetaIeta = it->sigmaIetaIeta;
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| 325 |
thisphoton.hadTowOverEm = it->hadTowOverEm;
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| 326 |
thisphoton.pixelseed = it->nPixelSeeds;
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thisphoton.conversionSafeVeto = it->passelectronveto;
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photon.push_back( thisphoton );
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if( loggingVerbosity > 2 )
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std::cout << " p_T, gamma = " << thisphoton.pt << std::endl;
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| 331 |
}
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| 332 |
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| 333 |
if( photon.size() == 0 && skim )
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| 334 |
continue;
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| 335 |
std::sort( photon.begin(), photon.end(), tree::EtGreater);
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| 336 |
if( loggingVerbosity > 1 )
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| 337 |
std::cout << "Found " << photon.size() << " photons" << std::endl;
|
| 338 |
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| 339 |
// jets
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| 340 |
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| 341 |
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| 342 |
for(std::vector<susy::PFJet>::iterator it = jetVector.begin();
|
| 343 |
it != jetVector.end(); ++it) {
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| 344 |
tree::Jet thisjet;
|
| 345 |
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| 346 |
// scale with JEC
|
| 347 |
float scale = 1.;
|
| 348 |
if(it->jecScaleFactors.count("L2L3") == 0)
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| 349 |
std::cout << "ERROR: JEC is not available for this jet" << std::endl;
|
| 350 |
else
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| 351 |
scale = it->jecScaleFactors.find("L2L3")->second;
|
| 352 |
TLorentzVector corrP4 = scale * it->momentum;
|
| 353 |
|
| 354 |
// Calculate HT.
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| 355 |
// The definiton differs from the saved jet, since trigger is described better
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| 356 |
if( std::abs( corrP4.Eta() ) < 3 && corrP4.Pt() > 40 )
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| 357 |
ht += thisjet.pt;
|
| 358 |
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| 359 |
if(std::abs(corrP4.Eta()) > 2.6 && skim ) continue;
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| 360 |
if(corrP4.Pt() < 30 && skim ) continue;
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| 361 |
thisjet.pt = corrP4.Pt();
|
| 362 |
thisjet.eta = corrP4.Eta();
|
| 363 |
thisjet.phi = corrP4.Phi();
|
| 364 |
thisjet.bCSV = it->bTagDiscriminators[susy::kCSV];
|
| 365 |
// jet composition
|
| 366 |
thisjet.chargedHadronEnergy = it->chargedHadronEnergy;
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| 367 |
thisjet.neutralHadronEnergy = it->neutralHadronEnergy;
|
| 368 |
thisjet.photonEnergy = it->photonEnergy;
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| 369 |
thisjet.electronEnergy = it->electronEnergy;
|
| 370 |
thisjet.muonEnergy = it->muonEnergy;
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| 371 |
thisjet.HFHadronEnergy = it->HFHadronEnergy;
|
| 372 |
thisjet.HFEMEnergy = it->HFEMEnergy;
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| 373 |
thisjet.chargedEmEnergy = it->chargedEmEnergy;
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| 374 |
thisjet.chargedMuEnergy = it->chargedMuEnergy;
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| 375 |
thisjet.neutralEmEnergy = it->neutralEmEnergy;
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| 377 |
if( loggingVerbosity > 2 )
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| 378 |
std::cout << " p_T, jet = " << thisjet.pt << std::endl;
|
| 379 |
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| 380 |
jet.push_back( thisjet );
|
| 381 |
}// for jet
|
| 382 |
if( jet.size() < 2 && skim )
|
| 383 |
continue;
|
| 384 |
std::sort( jet.begin(), jet.end(), tree::EtGreater);
|
| 385 |
if( loggingVerbosity > 1 )
|
| 386 |
std::cout << "Found " << jet.size() << " jets" << std::endl;
|
| 387 |
|
| 388 |
if( ht < 450 && skim)
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| 389 |
continue;
|
| 390 |
|
| 391 |
|
| 392 |
|
| 393 |
// met
|
| 394 |
std::map<TString, susy::MET>::iterator met_it = event->metMap.find("pfMet");
|
| 395 |
susy::MET* metobj = &(met_it->second);
|
| 396 |
met = metobj->met();
|
| 397 |
met_phi = metobj->mEt.Phi();
|
| 398 |
if( loggingVerbosity > 2 )
|
| 399 |
std::cout << " met = " << met << std::endl;
|
| 400 |
|
| 401 |
std::map<TString, susy::MET>::iterator type1met_it = event->metMap.find("pfType1CorrectedMet");
|
| 402 |
susy::MET* type1metobj = &(type1met_it->second);
|
| 403 |
type1met = type1metobj->met();
|
| 404 |
type1met_phi = type1metobj->mEt.Phi();
|
| 405 |
if( loggingVerbosity > 2 )
|
| 406 |
std::cout << " type1met = " << type1met << std::endl;
|
| 407 |
|
| 408 |
// electrons
|
| 409 |
std::vector<susy::Electron> eVector = event->electrons["gsfElectrons"];
|
| 410 |
for(std::vector<susy::Electron>::iterator it = eVector.begin(); it < eVector.end(); ++it) {
|
| 411 |
tree::Particle thiselectron;
|
| 412 |
if( loggingVerbosity > 2 )
|
| 413 |
cout << " electron pt = " << it->momentum.Pt() << endl;
|
| 414 |
// for cuts see https://twiki.cern.ch/twiki/bin/viewauth/CMS/EgammaCutBasedIdentification
|
| 415 |
// use veto electrons
|
| 416 |
if( it->momentum.Pt() < 20 || it->momentum.Pt() > 1e6 )
|
| 417 |
continue; // spike rejection
|
| 418 |
float iso = ( it->chargedHadronIso + max(it->neutralHadronIso+it->photonIso - effectiveAreaElectron(it->momentum.Eta())*event->rho25, (float)0. )
|
| 419 |
) / it->momentum.Pt();
|
| 420 |
float d0 = d0correction( *it, *event );
|
| 421 |
float dZ = std::abs( dZcorrection( *it, *event ) );
|
| 422 |
if ( it->isEB() ){
|
| 423 |
if ( fabs(it->deltaEtaSuperClusterTrackAtVtx) > 0.007
|
| 424 |
|| fabs(it->deltaPhiSuperClusterTrackAtVtx) > 0.8
|
| 425 |
|| it->sigmaIetaIeta > 0.01
|
| 426 |
|| it->hcalOverEcalBc > 0.15
|
| 427 |
|| d0 > 0.04
|
| 428 |
|| dZ > 0.2
|
| 429 |
|| iso > 0.15 )
|
| 430 |
continue;
|
| 431 |
}
|
| 432 |
else if( it->isEE() ) {
|
| 433 |
if ( fabs(it->deltaEtaSuperClusterTrackAtVtx) > 0.01
|
| 434 |
|| fabs(it->deltaPhiSuperClusterTrackAtVtx) > 0.7
|
| 435 |
|| it->sigmaIetaIeta > 0.03
|
| 436 |
|| d0 > 0.04
|
| 437 |
|| dZ > 0.2
|
| 438 |
|| iso > 0.15 )
|
| 439 |
continue;
|
| 440 |
}
|
| 441 |
else // not in barrel nor in endcap
|
| 442 |
continue;
|
| 443 |
|
| 444 |
thiselectron.pt = it->momentum.Pt();
|
| 445 |
if( loggingVerbosity > 2 )
|
| 446 |
std::cout << " p_T, electron = " << it->momentum.Et() << std::endl;
|
| 447 |
thiselectron.eta = it->momentum.Eta();
|
| 448 |
thiselectron.phi = it->momentum.Phi();
|
| 449 |
electron.push_back( thiselectron );
|
| 450 |
}
|
| 451 |
if( loggingVerbosity > 1 )
|
| 452 |
std::cout << "Found " << electron.size() << " electrons" << std::endl;
|
| 453 |
|
| 454 |
// muons
|
| 455 |
tree::Particle thismuon;
|
| 456 |
std::vector<susy::Muon> mVector = event->muons["muons"];
|
| 457 |
for( std::vector<susy::Muon>::iterator it = mVector.begin(); it != mVector.end(); ++it) {
|
| 458 |
if( !( it->isPFMuon() && ( it->isGlobalMuon() || it->isTrackerMuon() ) ) )
|
| 459 |
continue; // see https://twiki.cern.ch/twiki/bin/view/CMSPublic/SWGuideMuonId#Loose_Muon
|
| 460 |
thismuon.pt = it->momentum.Et();
|
| 461 |
if( thismuon.pt < 20 )
|
| 462 |
continue;
|
| 463 |
thismuon.eta = it->momentum.Eta();
|
| 464 |
thismuon.phi = it->momentum.Phi();
|
| 465 |
muon.push_back( thismuon );
|
| 466 |
}
|
| 467 |
if( loggingVerbosity > 1 )
|
| 468 |
std::cout << "Found " << muon.size() << " muons" << std::endl;
|
| 469 |
|
| 470 |
// vertices
|
| 471 |
nVertex = event->vertices.size();
|
| 472 |
|
| 473 |
tree::Particle thisGenParticle;
|
| 474 |
for( std::vector<susy::Particle>::iterator it = event->genParticles.begin(); it != event->genParticles.end(); ++it ) {
|
| 475 |
if( it->status == 3 ) { // hard interaction
|
| 476 |
switch( std::abs(it->pdgId) ) {
|
| 477 |
thisGenParticle.pt = it->momentum.Pt();
|
| 478 |
thisGenParticle.eta = it->momentum.Eta();
|
| 479 |
thisGenParticle.phi = it->momentum.Phi();
|
| 480 |
case 22: // photon
|
| 481 |
if( thisGenParticle.pt > 75 )
|
| 482 |
genPhoton.push_back( thisGenParticle );
|
| 483 |
case 11: // electron
|
| 484 |
if( thisGenParticle.pt > 20 ) // pt cut is lower to estimate fake rate in all pt bins
|
| 485 |
genElectron.push_back( thisGenParticle );
|
| 486 |
}
|
| 487 |
}
|
| 488 |
}
|
| 489 |
|
| 490 |
tree->Fill();
|
| 491 |
} // for jentry
|
| 492 |
|
| 493 |
|
| 494 |
outFile->cd();
|
| 495 |
eventNumbers->Write();
|
| 496 |
tree->Write();
|
| 497 |
outFile->Write();
|
| 498 |
outFile->Close();
|
| 499 |
}
|
| 500 |
|
