Inheritance diagram for pat::PATIsolatedTrackProducer:

Public Types
typedef pat::IsolatedTrack::LorentzVector	LorentzVector

Public Types inherited from edm::stream::EDProducer<>
typedef CacheContexts< T... >	CacheTypes

typedef CacheTypes::GlobalCache	GlobalCache

typedef AbilityChecker< T... >	HasAbility

typedef CacheTypes::LuminosityBlockCache	LuminosityBlockCache

typedef LuminosityBlockContextT< LuminosityBlockCache, RunCache, GlobalCache >	LuminosityBlockContext

typedef CacheTypes::LuminosityBlockSummaryCache	LuminosityBlockSummaryCache

typedef CacheTypes::RunCache	RunCache

typedef RunContextT< RunCache, GlobalCache >	RunContext

typedef CacheTypes::RunSummaryCache	RunSummaryCache

Public Member Functions
void	getCaloJetEnergy (const LorentzVector &, const reco::CaloJetCollection *, float &, float &) const

float	getDeDx (const reco::DeDxHitInfo *hitInfo, bool doPixel, bool doStrip) const

void	getIsolation (const LorentzVector &p4, const pat::PackedCandidateCollection *pc, int pc_idx, pat::PFIsolation &iso, pat::PFIsolation &miniiso) const

void	getNearestPCRef (const LorentzVector &p4, const pat::PackedCandidateCollection *pc, int pc_idx, int &pc_ref_idx) const

bool	getPFLeptonOverlap (const LorentzVector &p4, const pat::PackedCandidateCollection *pc) const

float	getPFNeutralSum (const LorentzVector &p4, const pat::PackedCandidateCollection *pc, int pc_idx) const

TrackDetMatchInfo	getTrackDetMatchInfo (const edm::Event &, const edm::EventSetup &, const reco::Track &)

	PATIsolatedTrackProducer (const edm::ParameterSet &)

void	produce (edm::Event &, const edm::EventSetup &) override

	~PATIsolatedTrackProducer () override

Public Member Functions inherited from edm::stream::EDProducer<>
	EDProducer ()=default

bool	hasAbilityToProduceInLumis () const final

bool	hasAbilityToProduceInRuns () const final

Private Attributes
const float	absIso_cut_

const bool	addPrescaledDeDxTracks_

const float	caloJet_DR_

const edm::EDGetTokenT< reco::CaloJetCollection >	caloJets_

const edm::EDGetTokenT< reco::DeDxHitInfoAss >	gt2dedxHitInfo_

const edm::EDGetTokenT< edm::ValueMap< int > >	gt2dedxHitInfoPrescale_

const edm::EDGetTokenT< edm::ValueMap< reco::DeDxData > >	gt2dedxPixel_

const edm::EDGetTokenT< edm::ValueMap< reco::DeDxData > >	gt2dedxStrip_

const edm::EDGetTokenT< edm::Association< pat::PackedCandidateCollection > >	gt2lt_

const edm::EDGetTokenT< edm::Association< pat::PackedCandidateCollection > >	gt2pc_

const edm::EDGetTokenT< reco::TrackCollection >	gt_

const edm::EDGetTokenT< pat::PackedCandidateCollection >	lt_

std::vector< double >	miniIsoParams_

const float	miniRelIso_cut_

const edm::EDGetTokenT< edm::Association< reco::PFCandidateCollection > >	pc2pf_

const edm::EDGetTokenT< pat::PackedCandidateCollection >	pc_

const float	pcRefNearest_DR_

const float	pcRefNearest_pTmin_

const float	pfIsolation_DR_

const float	pfIsolation_DZ_

const float	pflepoverlap_DR_

const float	pflepoverlap_pTmin_

const float	pfneutralsum_DR_

const float	pT_cut_

const float	pT_cut_noIso_

const edm::EDGetTokenT< reco::VertexCollection >	pv_

const float	relIso_cut_

const bool	saveDeDxHitInfo_

StringCutObjectSelector< pat::IsolatedTrack >	saveDeDxHitInfoCut_

TrackDetectorAssociator	trackAssociator_

TrackAssociatorParameters	trackAssocParameters_

const bool	usePrecomputedDeDxPixel_

const bool	usePrecomputedDeDxStrip_

Detailed Description

Definition at line 44 of file PATIsolatedTrackProducer.cc.

Member Typedef Documentation

typedef pat::IsolatedTrack::LorentzVector pat::PATIsolatedTrackProducer::LorentzVector

Definition at line 46 of file PATIsolatedTrackProducer.cc.

Constructor & Destructor Documentation

pat::PATIsolatedTrackProducer::PATIsolatedTrackProducer ( const edm::ParameterSet & iConfig )

explicit

Definition at line 108 of file PATIsolatedTrackProducer.cc.

References edm::ParameterSet::getParameter(), TrackAssociatorParameters::loadParameters(), miniIsoParams_, saveDeDxHitInfo_, trackAssociator_, trackAssocParameters_, and TrackDetectorAssociator::useDefaultPropagator().

                                                                                     :
   pc_(consumes<pat::PackedCandidateCollection>(iConfig.getParameter<edm::InputTag>("packedPFCandidates"))),
   lt_(consumes<pat::PackedCandidateCollection>(iConfig.getParameter<edm::InputTag>("lostTracks"))),
   gt_(consumes<reco::TrackCollection>(iConfig.getParameter<edm::InputTag>("generalTracks"))),
   pv_(consumes<reco::VertexCollection>(iConfig.getParameter<edm::InputTag>("primaryVertices"))),
   gt2pc_(consumes<edm::Association<pat::PackedCandidateCollection> >(iConfig.getParameter<edm::InputTag>("packedPFCandidates"))),
   gt2lt_(consumes<edm::Association<pat::PackedCandidateCollection> >(iConfig.getParameter<edm::InputTag>("lostTracks"))),
   pc2pf_(consumes<edm::Association<reco::PFCandidateCollection> >(iConfig.getParameter<edm::InputTag>("packedPFCandidates"))),
   caloJets_(consumes<reco::CaloJetCollection>(iConfig.getParameter<edm::InputTag>("caloJets"))),
   gt2dedxStrip_(consumes<edm::ValueMap<reco::DeDxData> >(iConfig.getParameter<edm::InputTag>("dEdxDataStrip"))),
   gt2dedxPixel_(consumes<edm::ValueMap<reco::DeDxData> >(iConfig.getParameter<edm::InputTag>("dEdxDataPixel"))),
   gt2dedxHitInfo_(consumes<reco::DeDxHitInfoAss>(iConfig.getParameter<edm::InputTag>("dEdxHitInfo"))),
   addPrescaledDeDxTracks_(iConfig.getParameter<bool>("addPrescaledDeDxTracks")),
   gt2dedxHitInfoPrescale_(addPrescaledDeDxTracks_ ? consumes<edm::ValueMap<int>>(iConfig.getParameter<edm::InputTag>("dEdxHitInfoPrescale")) : edm::EDGetTokenT<edm::ValueMap<int>>()),
   usePrecomputedDeDxStrip_(iConfig.getParameter<bool>("usePrecomputedDeDxStrip")),
   usePrecomputedDeDxPixel_(iConfig.getParameter<bool>("usePrecomputedDeDxPixel")),
   pT_cut_         (iConfig.getParameter<double>("pT_cut")),
   pT_cut_noIso_   (iConfig.getParameter<double>("pT_cut_noIso")),
   pfIsolation_DR_ (iConfig.getParameter<double>("pfIsolation_DR")),
   pfIsolation_DZ_ (iConfig.getParameter<double>("pfIsolation_DZ")),
   absIso_cut_     (iConfig.getParameter<double>("absIso_cut")),
   relIso_cut_     (iConfig.getParameter<double>("relIso_cut")),
   miniRelIso_cut_ (iConfig.getParameter<double>("miniRelIso_cut")),
   caloJet_DR_     (iConfig.getParameter<double>("caloJet_DR")),
   pflepoverlap_DR_ (iConfig.getParameter<double>("pflepoverlap_DR")),
   pflepoverlap_pTmin_ (iConfig.getParameter<double>("pflepoverlap_pTmin")),
   pcRefNearest_DR_ (iConfig.getParameter<double>("pcRefNearest_DR")),
   pcRefNearest_pTmin_ (iConfig.getParameter<double>("pcRefNearest_pTmin")),
   pfneutralsum_DR_ (iConfig.getParameter<double>("pfneutralsum_DR")),
   saveDeDxHitInfo_(iConfig.getParameter<bool>("saveDeDxHitInfo")),
   saveDeDxHitInfoCut_(iConfig.getParameter<std::string>("saveDeDxHitInfoCut"))
 {
     // TrackAssociator parameters
     edm::ParameterSet parameters = iConfig.getParameter<edm::ParameterSet>("TrackAssociatorParameters");
     edm::ConsumesCollector iC = consumesCollector();
     trackAssocParameters_.loadParameters( parameters, iC );
 
     trackAssociator_.useDefaultPropagator();
 
     miniIsoParams_ = iConfig.getParameter<std::vector<double> >("miniIsoParams");
     if(miniIsoParams_.size() != 3)
         throw cms::Exception("ParameterError") << "miniIsoParams must have exactly 3 elements.\n";
 
     produces< pat::IsolatedTrackCollection > ();
 
     if (saveDeDxHitInfo_) {
        produces<reco::DeDxHitInfoCollection>();
        produces<reco::DeDxHitInfoAss>();
     }
 }

pat::PATIsolatedTrackProducer::~PATIsolatedTrackProducer ( )

override

Definition at line 159 of file PATIsolatedTrackProducer.cc.

159 {}

Member Function Documentation

void pat::PATIsolatedTrackProducer::getCaloJetEnergy	(	const LorentzVector &	p4,
		const reco::CaloJetCollection *	cJets,
		float &	caloJetEm,
		float &	caloJetHad
	)		const

Definition at line 701 of file PATIsolatedTrackProducer.cc.

References caloJet_DR_, DEFINE_FWK_MODULE, deltaR(), PFRecoTauDiscriminationAgainstElectronDeadECAL_cfi::dR, reco::CaloJet::emEnergyInEB(), reco::CaloJet::emEnergyInEE(), reco::CaloJet::emEnergyInHF(), reco::CaloJet::hadEnergyInHB(), reco::CaloJet::hadEnergyInHE(), reco::CaloJet::hadEnergyInHF(), mps_fire::i, and p4.

Referenced by produce().

 {
     float nearestDR = 999;
     int ind = -1;
     for(unsigned int i=0; i<cJets->size(); i++){
         float dR = deltaR(cJets->at(i).p4(), p4);
         if(dR < caloJet_DR_ && dR < nearestDR){
             nearestDR = dR;
             ind = i;
         }
     }
 
     if(ind==-1){
         caloJetEm = 0;
         caloJetHad = 0;
     }else{
         const reco::CaloJet & cJet = cJets->at(ind);
         caloJetEm = cJet.emEnergyInEB() + cJet.emEnergyInEE() + cJet.emEnergyInHF();
         caloJetHad = cJet.hadEnergyInHB() + cJet.hadEnergyInHE() + cJet.hadEnergyInHF();
     }
 
 }

float pat::PATIsolatedTrackProducer::getDeDx	(	const reco::DeDxHitInfo *	hitInfo,
		bool	doPixel,
		bool	doStrip
	)		const

Definition at line 643 of file PATIsolatedTrackProducer.cc.

References reco::DeDxHitInfo::charge(), mps_fire::i, fastTrackerRecHitType::isPixel(), reco::DeDxHitInfo::pathlength(), reco::DeDxHitInfo::pixelCluster(), funct::pow(), mps_fire::result, DeDxTools::shapeSelection(), reco::DeDxHitInfo::size(), findQualityFiles::size, and reco::DeDxHitInfo::stripCluster().

Referenced by produce().

 {
     if(hitInfo == nullptr){
         return -1;
     }
 
     std::vector<float> charge_vec;
     for(unsigned int ih=0; ih<hitInfo->size(); ih++){
 
         bool isPixel = (hitInfo->pixelCluster(ih) != nullptr);
         bool isStrip = (hitInfo->stripCluster(ih) != nullptr);
 
         if(isPixel && !doPixel) continue;
         if(isStrip && !doStrip) continue;
 
         // probably shouldn't happen
         if(!isPixel && !isStrip) continue;
 
         // shape selection for strips
         if(isStrip && !DeDxTools::shapeSelection(*(hitInfo->stripCluster(ih))))
             continue;
         
         float Norm=0;       
         if(isPixel)
             Norm = 3.61e-06; //compute the normalization factor to get the energy in MeV/mm
         if(isStrip)
             Norm = 3.61e-06 * 265;
             
         //save the dE/dx in MeV/mm to a vector.  
         charge_vec.push_back(Norm*hitInfo->charge(ih)/hitInfo->pathlength(ih));           
     }
 
     int size = charge_vec.size();
     float result = 0.0;
 
     //build the harmonic 2 dE/dx estimator
     float expo = -2;
     for(int i=0; i<size; i++){
         result += pow(charge_vec[i], expo);
     }
     result = (size>0) ? pow(result/size, 1./expo) : 0.0;
 
     return result;
 }

void pat::PATIsolatedTrackProducer::getIsolation	(	const LorentzVector &	p4,
		const pat::PackedCandidateCollection *	pc,
		int	pc_idx,
		pat::PFIsolation &	iso,
		pat::PFIsolation &	miniiso
	)		const

Definition at line 495 of file PATIsolatedTrackProducer.cc.

References funct::abs(), deltaR(), runTauDisplay::dr, isotracks_cff::fromPV, SiStripPI::max, min(), miniIsoParams_, muons2muons_cfi::PFIsolation, pfIsolation_DR_, pfIsolation_DZ_, and EnergyCorrector::pt.

Referenced by produce().

 {
         float chiso=0, nhiso=0, phiso=0, puiso=0;   // standard isolation
         float chmiso=0, nhmiso=0, phmiso=0, pumiso=0;  // mini isolation
         float miniDR = std::max(miniIsoParams_[0], std::min(miniIsoParams_[1], miniIsoParams_[2]/p4.pt()));
         for(pat::PackedCandidateCollection::const_iterator pf_it = pc->begin(); pf_it != pc->end(); pf_it++){
             if(int(pf_it - pc->begin()) == pc_idx)  //don't count itself
                 continue;
             int id = std::abs(pf_it->pdgId());
             bool fromPV = (pf_it->fromPV()>1 || fabs(pf_it->dz()) < pfIsolation_DZ_);
             float pt = pf_it->p4().pt();
             float dr = deltaR(p4, pf_it->p4());
 
             if(dr < pfIsolation_DR_){
                 // charged cands from PV get added to trackIso
                 if(id==211 && fromPV)
                     chiso += pt;
                 // charged cands not from PV get added to pileup iso
                 else if(id==211)
                     puiso += pt;
                 // neutral hadron iso
                 if(id==130)
                     nhiso += pt;
                 // photon iso
                 if(id==22)
                     phiso += pt;
             }
             // same for mini isolation
             if(dr < miniDR){
                 if(id == 211 && fromPV)
                     chmiso += pt;
                 else if(id == 211)
                     pumiso += pt;
                 if(id == 130)
                     nhmiso += pt;
                 if(id == 22)
                     phmiso += pt;
             }
         }
 
         iso = pat::PFIsolation(chiso,nhiso,phiso,puiso);
         miniiso = pat::PFIsolation(chmiso,nhmiso,phmiso,pumiso);
 
 }

void pat::PATIsolatedTrackProducer::getNearestPCRef	(	const LorentzVector &	p4,
		const pat::PackedCandidateCollection *	pc,
		int	pc_idx,
		int &	pc_ref_idx
	)		const

Definition at line 578 of file PATIsolatedTrackProducer.cc.

References funct::abs(), ALCARECOTkAlJpsiMuMu_cff::charge, deltaR(), runTauDisplay::dr, isotracks_cff::fromPV, createfilelist::int, pcRefNearest_DR_, pcRefNearest_pTmin_, pfIsolation_DZ_, and EnergyCorrector::pt.

Referenced by produce().

 {
     float dr_min = pcRefNearest_DR_;
     float dr_min_pu = pcRefNearest_DR_;
     int pc_ref_idx_pu=-1;
         for(pat::PackedCandidateCollection::const_iterator pf_it = pc->begin(); pf_it != pc->end(); pf_it++){
             if(int(pf_it - pc->begin()) == pc_idx)  //don't count itself
                 continue;
         int charge = std::abs(pf_it->charge());
             bool fromPV = (pf_it->fromPV()>1 || fabs(pf_it->dz()) < pfIsolation_DZ_);
             float pt = pf_it->p4().pt();
             float dr = deltaR(p4, pf_it->p4());
         if(charge==0) // exclude neutral candidates
           continue;
         if(pt < pcRefNearest_pTmin_) // exclude candidates w/ pT below threshold
           continue;
         if(dr > dr_min && dr > dr_min_pu) // exclude too far candidates
           continue;
 
         if(fromPV){ // Priority to candidates from PV
           if(dr < dr_min){
         dr_min = dr;
         pc_ref_idx = int(pf_it - pc->begin());
           }
         }
         else{ // Otherwise, store candidate from non-PV if no candidate from PV found
           if(dr < dr_min_pu){
         dr_min_pu = dr;
         pc_ref_idx_pu = int(pf_it - pc->begin());
           }
         }
         }
 
     if(pc_ref_idx == -1 && pc_ref_idx_pu != -1) // If no candidate from PV was found, store candidate from non-PV (if found)
       pc_ref_idx = pc_ref_idx_pu;
 }

bool pat::PATIsolatedTrackProducer::getPFLeptonOverlap	(	const LorentzVector &	p4,
		const pat::PackedCandidateCollection *	pc
	)		const

Definition at line 543 of file PATIsolatedTrackProducer.cc.

References funct::abs(), ALCARECOTkAlJpsiMuMu_cff::charge, deltaR(), runTauDisplay::dr, isotracks_cff::fromPV, triggerObjects_cff::id, packedPFCandidateRefMixer_cfi::pf, pfIsolation_DZ_, pflepoverlap_DR_, pflepoverlap_pTmin_, and EnergyCorrector::pt.

Referenced by produce().

 {
         bool isOverlap = false;
     float dr_min = pflepoverlap_DR_;
     int id_drmin = 0;
         for (const auto & pf : *pc) {
             int id = std::abs(pf.pdgId());
         int charge = std::abs(pf.charge());
             bool fromPV = (pf.fromPV()>1 || std::abs(pf.dz()) < pfIsolation_DZ_);
             float pt = pf.pt();
         if(charge==0) // exclude neutral candidates
           continue;
         if(!(fromPV)) // exclude candidates not from PV
           continue;
         if(pt < pflepoverlap_pTmin_) // exclude pf candidates w/ pT below threshold
           continue;
 
             float dr = deltaR(p4, pf.p4());
             if(dr > pflepoverlap_DR_) // exclude pf candidates far from isolated track
           continue;
 
         if(dr < dr_min){
           dr_min = dr;
           id_drmin = id;
         }
         
         }
 
     if(dr_min<pflepoverlap_DR_ && (id_drmin==11 || id_drmin==13))
       isOverlap = true;
     
     return isOverlap;
 }

float pat::PATIsolatedTrackProducer::getPFNeutralSum	(	const LorentzVector &	p4,
		const pat::PackedCandidateCollection *	pc,
		int	pc_idx
	)		const

Definition at line 616 of file PATIsolatedTrackProducer.cc.

References funct::abs(), deltaR(), runTauDisplay::dr, pfneutralsum_DR_, and EnergyCorrector::pt.

Referenced by produce().

 {
         float nsum=0;
         float nhsum=0, phsum=0;
         for(pat::PackedCandidateCollection::const_iterator pf_it = pc->begin(); pf_it != pc->end(); pf_it++){
             if(int(pf_it - pc->begin()) == pc_idx)  //don't count itself
                 continue;
             int id = std::abs(pf_it->pdgId());
             float pt = pf_it->p4().pt();
             float dr = deltaR(p4, pf_it->p4());
 
             if(dr < pfneutralsum_DR_){
           // neutral hadron sum
           if(id==130)
         nhsum += pt;
           // photon iso
           if(id==22)
         phsum += pt;
             }
         }
 
     nsum = nhsum + phsum;
     
     return nsum;
 }

TrackDetMatchInfo pat::PATIsolatedTrackProducer::getTrackDetMatchInfo	(	const edm::Event &	iEvent,
		const edm::EventSetup &	iSetup,
		const reco::Track &	track
	)

Definition at line 688 of file PATIsolatedTrackProducer.cc.

References TrackDetectorAssociator::associate(), ecalTB2006H4_GenSimDigiReco_cfg::bField, edm::EventSetup::get(), trajectoryStateTransform::initialFreeState(), trackAssociator_, and trackAssocParameters_.

Referenced by produce().

 {
     edm::ESHandle<MagneticField> bField;
     iSetup.get<IdealMagneticFieldRecord>().get(bField);
     FreeTrajectoryState initialState = trajectoryStateTransform::initialFreeState(track,&*bField);
 
     // can't use the associate() using reco::Track directly, since 
     // track->extra() is non-null but segfaults when trying to use it
     return trackAssociator_.associate(iEvent, iSetup, trackAssocParameters_, &initialState);
 }

void pat::PATIsolatedTrackProducer::produce	(	edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

override

Definition at line 161 of file PATIsolatedTrackProducer.cc.

References absIso_cut_, addPrescaledDeDxTracks_, isolatedTracks_cfi::caloJets, caloJets_, ALCARECOTkAlJpsiMuMu_cff::charge, reco::TrackBase::charge(), pat::PackedCandidate::charge(), pat::PFIsolation::chargedHadronIso(), edm::Association< C >::contains(), TrackDetMatchInfo::crossedEcalIds, TrackDetMatchInfo::crossedHcalIds, spr::deltaEta, hiPixelPairStep_cff::deltaPhi, PVValHelper::dxy, reco::TrackBase::dxy(), pat::PackedCandidate::dxy(), reco::TrackBase::dxyError(), pat::PackedCandidate::dxyError(), PVValHelper::dz, reco::TrackBase::dz(), pat::PackedCandidate::dz(), reco::TrackBase::dzError(), pat::PackedCandidate::dzError(), reco::TrackBase::eta(), objects.autophobj::filler, EcalCondObjectContainer< T >::find(), isotracks_cff::fromPV, pat::PackedCandidate::fromPV(), isolatedTracks_cfi::generalTracks, edm::EventSetup::get(), edm::Ref< C, T, F >::get(), edm::Event::getByToken(), getCaloJetEnergy(), getDeDx(), getIsolation(), getNearestPCRef(), getPFLeptonOverlap(), getPFNeutralSum(), getTrackDetMatchInfo(), reco::JetExtendedAssociation::getValue(), HcalCondObjectContainer< Item >::getValues(), gt2dedxHitInfo_, gt2dedxHitInfoPrescale_, gt2dedxPixel_, gt2dedxStrip_, gt2lt_, gt2pc_, gt_, pat::PackedCandidate::hasTrackDetails(), reco::TrackBase::hitPattern(), AnalysisDataFormats_SUSYBSMObjects::hp, edm::HandleBase::id(), edm::Ref< C, T, F >::id(), createfilelist::int, edm::Ref< C, T, F >::isNonnull(), edm::HandleBase::isValid(), edm::Ref< C, T, F >::key(), lt_, funct::m, miniRelIso_cut_, eostools::move(), reco::TrackBase::p(), p4, pat::PackedCandidate::p4(), pc2pf_, pc_, common_cff::pdgId, pat::PackedCandidate::pdgId(), reco::TrackBase::phi(), reco::Vertex::position(), edm::Handle< T >::product(), edm::ESHandle< T >::product(), pT_cut_, pT_cut_noIso_, edm::Event::put(), MetAnalyzer::pv(), pv_, reco::TrackBase::px(), reco::TrackBase::py(), reco::TrackBase::pz(), reco::TrackBase::qualityMask(), relIso_cut_, saveDeDxHitInfo_, saveDeDxHitInfoCut_, mathSSE::sqrt(), photonIsolationHIProducer_cfi::trackQuality, TrackDetMatchInfo::trkGlobPosAtEcal, usePrecomputedDeDxPixel_, and usePrecomputedDeDxStrip_.

                                                                                        {
 
     // packedPFCandidate collection
     edm::Handle<pat::PackedCandidateCollection> pc_h;
     iEvent.getByToken( pc_, pc_h );
     const pat::PackedCandidateCollection *pc = pc_h.product();
 
     // lostTracks collection
     edm::Handle<pat::PackedCandidateCollection> lt_h;
     iEvent.getByToken( lt_, lt_h );
     const pat::PackedCandidateCollection *lt = lt_h.product();
 
     // generalTracks collection
     edm::Handle<reco::TrackCollection> gt_h;
     iEvent.getByToken( gt_, gt_h );
     const reco::TrackCollection *generalTracks = gt_h.product();
 
     // get the primary vertex
     edm::Handle<reco::VertexCollection> pvs;
     iEvent.getByToken( pv_, pvs );
     const reco::Vertex & pv = (*pvs)[0];
 
     // generalTracks-->packedPFCandidate association
     edm::Handle<edm::Association<pat::PackedCandidateCollection> > gt2pc;
     iEvent.getByToken(gt2pc_, gt2pc);
 
     // generalTracks-->lostTracks association
     edm::Handle<edm::Association<pat::PackedCandidateCollection> > gt2lt;
     iEvent.getByToken(gt2lt_, gt2lt);
 
     // packedPFCandidates-->particleFlow(reco::PFCandidate) association
     edm::Handle<edm::Association<reco::PFCandidateCollection> > pc2pf;
     iEvent.getByToken(pc2pf_, pc2pf);
 
     edm::Handle<reco::CaloJetCollection> caloJets;
     iEvent.getByToken(caloJets_, caloJets);
 
     // associate generalTracks with their DeDx data (estimator for strip dE/dx)
     edm::Handle<edm::ValueMap<reco::DeDxData> > gt2dedxStrip;
     iEvent.getByToken(gt2dedxStrip_, gt2dedxStrip);
 
     // associate generalTracks with their DeDx data (estimator for pixel dE/dx)
     edm::Handle<edm::ValueMap<reco::DeDxData> > gt2dedxPixel;
     iEvent.getByToken(gt2dedxPixel_, gt2dedxPixel);
 
     // associate generalTracks with their DeDx hit info (used to estimate pixel dE/dx)
     edm::Handle<reco::DeDxHitInfoAss> gt2dedxHitInfo;
     iEvent.getByToken(gt2dedxHitInfo_, gt2dedxHitInfo);
     edm::Handle<edm::ValueMap<int>> gt2dedxHitInfoPrescale;
     if (addPrescaledDeDxTracks_) {
         iEvent.getByToken(gt2dedxHitInfoPrescale_, gt2dedxHitInfoPrescale);
     }
 
     edm::ESHandle<HcalChannelQuality> hcalQ_h;
     iSetup.get<HcalChannelQualityRcd>().get("withTopo", hcalQ_h);
     const HcalChannelQuality *hcalQ = hcalQ_h.product();
     
     edm::ESHandle<EcalChannelStatus> ecalS_h;
     iSetup.get<EcalChannelStatusRcd>().get(ecalS_h);
     const EcalChannelStatus *ecalS = ecalS_h.product();
 
     auto outDeDxC = std::make_unique<reco::DeDxHitInfoCollection>();
     std::vector<int> dEdXass;
 
     auto outPtrP = std::make_unique<std::vector<pat::IsolatedTrack>>();
 
     //add general tracks
     for(unsigned int igt=0; igt<generalTracks->size(); igt++){
         const reco::Track &gentk = (*gt_h)[igt];
         reco::TrackRef tkref = reco::TrackRef(gt_h, igt);
         pat::PackedCandidateRef pcref = (*gt2pc)[tkref];
         pat::PackedCandidateRef ltref = (*gt2lt)[tkref];
         const pat::PackedCandidate & pfCand = *(pcref.get());
         const pat::PackedCandidate & lostTrack = *(ltref.get());
 
         // Determine if this general track is associated with anything in packedPFCandidates or lostTracks
         // Sometimes, a track gets associated w/ a neutral pfCand.
         // In this case, ignore the pfCand and take from lostTracks
         bool isInPackedCands = (pcref.isNonnull() && pcref.id()==pc_h.id() && pfCand.charge()!=0);
         bool isInLostTracks  = (ltref.isNonnull() && ltref.id()==lt_h.id());
 
         LorentzVector p4;
         pat::PackedCandidateRef refToCand;
         int pdgId, charge, fromPV;
         float dz, dxy, dzError, dxyError;
         int pfCandInd; //to avoid counting packedPFCands in their own isolation
     int ltCandInd; //to avoid pointing lost track to itself when looking for closest
 
         // get the four-momentum and charge
         if(isInPackedCands){
             p4        = pfCand.p4();
             charge    = pfCand.charge();
             pfCandInd = pcref.key();
         ltCandInd = -1;
         }else if(isInLostTracks){
             p4        = lostTrack.p4();
             charge    = lostTrack.charge();
             pfCandInd = -1;
         ltCandInd = ltref.key();
         }else{
             double m = 0.13957018; //assume pion mass
             double E = sqrt(m*m + gentk.p()*gentk.p());
             p4.SetPxPyPzE(gentk.px(), gentk.py(), gentk.pz(), E);
             charge = gentk.charge();
             pfCandInd = -1;
         ltCandInd = -1;
         }
 
         int prescaled = 0;
         if (addPrescaledDeDxTracks_) {
             const auto &dedxRef = (*gt2dedxHitInfo)[tkref];
             if (dedxRef.isNonnull()) {
                 prescaled = (*gt2dedxHitInfoPrescale)[dedxRef];
             }
         }
 
         if(p4.pt() < pT_cut_ && prescaled <= 1) 
             continue;
         if(charge == 0)
             continue;
 
         // get the isolation of the track
         pat::PFIsolation isolationDR03;
         pat::PFIsolation miniIso;
         getIsolation(p4, pc, pfCandInd, isolationDR03, miniIso);
         
         // isolation cut
         if( p4.pt() < pT_cut_noIso_ && prescaled <= 1 && 
             !(isolationDR03.chargedHadronIso() < absIso_cut_ ||
               isolationDR03.chargedHadronIso()/p4.pt() < relIso_cut_ ||
               miniIso.chargedHadronIso()/p4.pt() < miniRelIso_cut_))
             continue;
 
         // get the rest after the pt/iso cuts. Saves some runtime
         if(isInPackedCands){
             pdgId     = pfCand.pdgId();
             dz        = pfCand.dz();
             dxy       = pfCand.dxy();
             dzError   = pfCand.hasTrackDetails() ? pfCand.dzError()  : gentk.dzError();
             dxyError  = pfCand.hasTrackDetails() ? pfCand.dxyError() : gentk.dxyError();
             fromPV    = pfCand.fromPV();
             refToCand = pcref;
         }else if(isInLostTracks){
             pdgId     = lostTrack.pdgId();
             dz        = lostTrack.dz();
             dxy       = lostTrack.dxy();
             dzError   = lostTrack.hasTrackDetails() ? lostTrack.dzError()  : gentk.dzError();
             dxyError  = lostTrack.hasTrackDetails() ? lostTrack.dxyError() : gentk.dxyError();
             fromPV    = lostTrack.fromPV();
             refToCand = ltref;
         }else{
             pdgId     = 0;
             dz        = gentk.dz(pv.position());
             dxy       = gentk.dxy(pv.position());
             dzError   = gentk.dzError();
             dxyError  = gentk.dxyError();
             fromPV    = -1;
             refToCand = pat::PackedCandidateRef();  //NULL reference
         }
 
         float caloJetEm, caloJetHad;
         getCaloJetEnergy(p4, caloJets.product(), caloJetEm, caloJetHad);
 
     bool pfLepOverlap = getPFLeptonOverlap(p4, pc);
     float pfNeutralSum = getPFNeutralSum(p4, pc, pfCandInd);
     
     pat::PackedCandidateRef refToNearestPF = pat::PackedCandidateRef();
     int refToNearestPF_idx=-1;
     getNearestPCRef(p4, pc, pfCandInd, refToNearestPF_idx);
     if(refToNearestPF_idx!=-1)
       refToNearestPF = pat::PackedCandidateRef(pc_h, refToNearestPF_idx);
     
     pat::PackedCandidateRef refToNearestLostTrack = pat::PackedCandidateRef();
     int refToNearestLostTrack_idx=-1;
     getNearestPCRef(p4, lt, ltCandInd, refToNearestLostTrack_idx);
     if(refToNearestLostTrack_idx!=-1)
       refToNearestLostTrack = pat::PackedCandidateRef(lt_h, refToNearestLostTrack_idx);
     
         // if no dEdx info exists, just store -1
         float dEdxPixel=-1, dEdxStrip=-1;        
         if(usePrecomputedDeDxStrip_ && gt2dedxStrip.isValid() && gt2dedxStrip->contains(tkref.id())){
             dEdxStrip = (*gt2dedxStrip)[tkref].dEdx();
         }else if(gt2dedxHitInfo.isValid() && gt2dedxHitInfo->contains(tkref.id())){
             const reco::DeDxHitInfo* hitInfo = (*gt2dedxHitInfo)[tkref].get();
             dEdxStrip = getDeDx(hitInfo, false, true);
         }
         if(usePrecomputedDeDxPixel_ && gt2dedxPixel.isValid() && gt2dedxPixel->contains(tkref.id())){
             dEdxPixel = (*gt2dedxPixel)[tkref].dEdx();
         }else if(gt2dedxHitInfo.isValid() && gt2dedxHitInfo->contains(tkref.id())){
             const reco::DeDxHitInfo* hitInfo = (*gt2dedxHitInfo)[tkref].get();
             dEdxPixel = getDeDx(hitInfo, true, false);
         }
 
         int trackQuality = gentk.qualityMask();
 
         // get the associated ecal/hcal detectors
         TrackDetMatchInfo trackDetInfo = getTrackDetMatchInfo(iEvent, iSetup, gentk);
 
         // fill ecal/hcal status vectors
         std::vector<uint32_t> crossedHcalStatus;
         for(auto const & did : trackDetInfo.crossedHcalIds){
             crossedHcalStatus.push_back(hcalQ->getValues(did.rawId())->getValue());
         }
         std::vector<uint16_t> crossedEcalStatus;
         for(auto const & did : trackDetInfo.crossedEcalIds){
             crossedEcalStatus.push_back(ecalS->find(did.rawId())->getStatusCode());
         }
 
         int deltaEta = int((trackDetInfo.trkGlobPosAtEcal.eta() - gentk.eta())/0.5 * 250);
         int deltaPhi = int((trackDetInfo.trkGlobPosAtEcal.phi() - gentk.phi())/0.5 * 250);
         if(deltaEta < -250) deltaEta = -250;
         if(deltaEta > 250)  deltaEta = 250;
         if(deltaPhi < -250) deltaPhi = -250;
         if(deltaPhi > 250)  deltaPhi = 250;
 
         outPtrP->push_back(pat::IsolatedTrack(isolationDR03, miniIso, caloJetEm, caloJetHad, pfLepOverlap, pfNeutralSum, p4,
                                               charge, pdgId, dz, dxy, dzError, dxyError,
                                               gentk.hitPattern(), dEdxStrip, dEdxPixel, fromPV, trackQuality,
                                               crossedEcalStatus, crossedHcalStatus,
                                               deltaEta, deltaPhi, refToCand,
                           refToNearestPF, refToNearestLostTrack));
         outPtrP->back().setStatus(prescaled);
 
         if (saveDeDxHitInfo_) {
             const auto &dedxRef = (*gt2dedxHitInfo)[tkref];
             if (saveDeDxHitInfoCut_(outPtrP->back()) && dedxRef.isNonnull()) {
                 outDeDxC->push_back( *dedxRef );
                 dEdXass.push_back(outDeDxC->size()-1);
             } else {
                 dEdXass.push_back(-1);
             }
         }
 
     }
 
     // there are some number of pfcandidates with no associated track
     // (mostly electrons, with a handful of muons)
     // here we find these and store. Track-specific variables get some default values
     for(unsigned int ipc=0; ipc<pc->size(); ipc++){
         const pat::PackedCandidate& pfCand = pc->at(ipc);
         pat::PackedCandidateRef pcref = pat::PackedCandidateRef(pc_h, ipc);
         reco::PFCandidateRef pfref = (*pc2pf)[pcref];
 
         // already counted if it has a track reference in the generalTracks collection
         if(pfref.get()->trackRef().isNonnull() && pfref.get()->trackRef().id() == gt_h.id())
             continue;
 
         LorentzVector p4;
         pat::PackedCandidateRef refToCand;
         int pdgId, charge, fromPV;
         float dz, dxy, dzError, dxyError;
 
         p4 = pfCand.p4();
         charge = pfCand.charge();
 
         if(p4.pt() < pT_cut_)
             continue;
         if(charge == 0)
             continue;
 
         // get the isolation of the track
         pat::PFIsolation isolationDR03;
         pat::PFIsolation miniIso;
         getIsolation(p4, pc, ipc, isolationDR03, miniIso);
         
         // isolation cut
         if( p4.pt() < pT_cut_noIso_ && 
             !(isolationDR03.chargedHadronIso() < absIso_cut_ ||
               isolationDR03.chargedHadronIso()/p4.pt() < relIso_cut_ ||
               miniIso.chargedHadronIso()/p4.pt() < miniRelIso_cut_))
             continue;
 
         pdgId     = pfCand.pdgId();
         dz        = pfCand.dz();
         dxy       = pfCand.dxy();
         if (pfCand.hasTrackDetails()){
             dzError   = pfCand.dzError();
             dxyError  = pfCand.dxyError();
         } else {
             dzError = 0;
             dxyError = 0;
         }
         fromPV    = pfCand.fromPV();
         refToCand = pcref;
 
         float caloJetEm, caloJetHad;
         getCaloJetEnergy(p4, caloJets.product(), caloJetEm, caloJetHad);
 
     bool pfLepOverlap = getPFLeptonOverlap(p4, pc);
     float pfNeutralSum = getPFNeutralSum(p4, pc, ipc);
 
     pat::PackedCandidateRef refToNearestPF = pat::PackedCandidateRef();
     int refToNearestPF_idx=-1;
     getNearestPCRef(p4, pc, ipc, refToNearestPF_idx);
     if(refToNearestPF_idx!=-1)
       refToNearestPF = pat::PackedCandidateRef(pc_h, refToNearestPF_idx);
     
     pat::PackedCandidateRef refToNearestLostTrack = pat::PackedCandidateRef();
     int refToNearestLostTrack_idx=-1;
     getNearestPCRef(p4, lt, -1, refToNearestLostTrack_idx);
     if(refToNearestLostTrack_idx!=-1)
       refToNearestLostTrack = pat::PackedCandidateRef(lt_h, refToNearestLostTrack_idx);
 
         // fill with default values
         reco::HitPattern hp;
         float dEdxPixel=-1, dEdxStrip=-1;
         int trackQuality=0;
         std::vector<uint16_t> ecalStatus;
         std::vector<uint32_t> hcalStatus;
         int deltaEta=0;
         int deltaPhi=0;
 
         outPtrP->push_back(pat::IsolatedTrack(isolationDR03, miniIso, caloJetEm, caloJetHad, pfLepOverlap, pfNeutralSum, p4,
                                               charge, pdgId, dz, dxy, dzError, dxyError,
                                               hp, dEdxStrip, dEdxPixel, fromPV, trackQuality,
                                               ecalStatus, hcalStatus, deltaEta, deltaPhi, refToCand,
                           refToNearestPF, refToNearestLostTrack));
 
         dEdXass.push_back(-1); // these never have dE/dx hit info, as there's no track
     }
     
     auto orphHandle = iEvent.put(std::move(outPtrP));
     if (saveDeDxHitInfo_) {
         auto dedxOH = iEvent.put(std::move(outDeDxC));
         auto dedxMatch = std::make_unique<reco::DeDxHitInfoAss>(dedxOH);
         reco::DeDxHitInfoAss::Filler filler(*dedxMatch);  
         filler.insert(orphHandle, dEdXass.begin(), dEdXass.end()); 
         filler.fill();
         iEvent.put(std::move(dedxMatch));
     }
     
 }