#include <IsolatedPixelTrackCandidateProducer.h>

Inheritance diagram for IsolatedPixelTrackCandidateProducer:

Classes
struct	seedAtEC

Public Member Functions
void	beginRun (const edm::Run &, const edm::EventSetup &) override

double	getDistInCM (double eta1, double phi1, double eta2, double phi2)

std::pair< double, double >	GetEtaPhiAtEcal (double etaIP, double phiIP, double pT, int charge, double vtxZ)

	IsolatedPixelTrackCandidateProducer (const edm::ParameterSet &ps)

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

	~IsolatedPixelTrackCandidateProducer () override

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

bool	hasAbilityToProduceInBeginLumis () const final

bool	hasAbilityToProduceInBeginProcessBlocks () const final

bool	hasAbilityToProduceInBeginRuns () const final

bool	hasAbilityToProduceInEndLumis () const final

bool	hasAbilityToProduceInEndProcessBlocks () const final

bool	hasAbilityToProduceInEndRuns () const final

Static Public Member Functions
static void	fillDescriptions (edm::ConfigurationDescriptions &descriptions)

Private Attributes
const std::string	bfield_

double	bfVal_

const double	ebEtaBoundary_

const double	maxPForIsolationValue_

const double	minPTrackValue_

const double	pixelIsolationConeSizeAtEC_

const double	prelimCone_

double	rEB_

const double	tauAssocCone_

const double	tauUnbiasCone_

const edm::ESGetToken< MagneticField, IdealMagneticFieldRecord >	tok_bFieldH_

const edm::ESGetToken< CaloGeometry, CaloGeometryRecord >	tok_geom_

const edm::EDGetTokenT< trigger::TriggerFilterObjectWithRefs >	tok_hlt_

const edm::EDGetTokenT< l1extra::L1JetParticleCollection >	tok_l1_

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

const std::vector< edm::EDGetTokenT< reco::TrackCollection > >	toks_pix_

const double	vtxCutIsol_

const double	vtxCutSeed_

double	zEE_

Additional Inherited Members
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

Detailed Description

Definition at line 47 of file IsolatedPixelTrackCandidateProducer.h.

Constructor & Destructor Documentation

◆ IsolatedPixelTrackCandidateProducer()

IsolatedPixelTrackCandidateProducer::IsolatedPixelTrackCandidateProducer ( const edm::ParameterSet & ps )

Definition at line 31 of file IsolatedPixelTrackCandidateProducer.cc.

     : tok_hlt_(consumes<trigger::TriggerFilterObjectWithRefs>(config.getParameter<edm::InputTag>("L1GTSeedLabel"))),
       tok_l1_(consumes<l1extra::L1JetParticleCollection>(config.getParameter<edm::InputTag>("L1eTauJetsSource"))),
       tok_vert_(consumes<reco::VertexCollection>(config.getParameter<edm::InputTag>("VertexLabel"))),
       toks_pix_(
           edm::vector_transform(config.getParameter<std::vector<edm::InputTag> >("PixelTracksSources"),
                                 [this](edm::InputTag const& tag) { return consumes<reco::TrackCollection>(tag); })),
       tok_bFieldH_(esConsumes<MagneticField, IdealMagneticFieldRecord, edm::Transition::BeginRun>()),
       tok_geom_(esConsumes<CaloGeometry, CaloGeometryRecord, edm::Transition::BeginRun>()),
       bfield_(config.getParameter<std::string>("MagFieldRecordName")),
       prelimCone_(config.getParameter<double>("ExtrapolationConeSize")),
       pixelIsolationConeSizeAtEC_(config.getParameter<double>("PixelIsolationConeSizeAtEC")),
       vtxCutSeed_(config.getParameter<double>("MaxVtxDXYSeed")),
       vtxCutIsol_(config.getParameter<double>("MaxVtxDXYIsol")),
       tauAssocCone_(config.getParameter<double>("tauAssociationCone")),
       tauUnbiasCone_(config.getParameter<double>("tauUnbiasCone")),
       minPTrackValue_(config.getParameter<double>("minPTrack")),
       maxPForIsolationValue_(config.getParameter<double>("maxPTrackForIsolation")),
       ebEtaBoundary_(config.getParameter<double>("EBEtaBoundary")),
       rEB_(-1),
       zEE_(-1),
       bfVal_(0) {
   // Register the product
   produces<reco::IsolatedPixelTrackCandidateCollection>();
 }

References GlobalPosition_Frontier_DevDB_cff::tag.

◆ ~IsolatedPixelTrackCandidateProducer()

IsolatedPixelTrackCandidateProducer::~IsolatedPixelTrackCandidateProducer ( )

override

Definition at line 57 of file IsolatedPixelTrackCandidateProducer.cc.

57 {}

Member Function Documentation

◆ beginRun()

void IsolatedPixelTrackCandidateProducer::beginRun	(	const edm::Run &	run,
		const edm::EventSetup &	theEventSetup
	)

override

Definition at line 79 of file IsolatedPixelTrackCandidateProducer.cc.

                                                                                                         {
   const CaloGeometry* pG = &theEventSetup.getData(tok_geom_);
  
   const double rad(dynamic_cast<const EcalBarrelGeometry*>(pG->getSubdetectorGeometry(DetId::Ecal, EcalBarrel))
                        ->avgRadiusXYFrontFaceCenter());
   const double zz(dynamic_cast<const EcalEndcapGeometry*>(pG->getSubdetectorGeometry(DetId::Ecal, EcalEndcap))
                       ->avgAbsZFrontFaceCenter());
  
   rEB_ = rad;
   zEE_ = zz;
  
   const MagneticField* vbfField = &theEventSetup.getData(tok_bFieldH_);
   const VolumeBasedMagneticField* vbfCPtr = dynamic_cast<const VolumeBasedMagneticField*>(&(*vbfField));
   GlobalVector BField = vbfCPtr->inTesla(GlobalPoint(0, 0, 0));
   bfVal_ = BField.mag();
 }

References ProducerES_cfi::BField, bfVal_, DetId::Ecal, EcalBarrel, EcalEndcap, edm::EventSetup::getData(), CaloGeometry::getSubdetectorGeometry(), VolumeBasedMagneticField::inTesla(), rEB_, tok_bFieldH_, tok_geom_, zEE_, and geometryCSVtoXML::zz.

◆ fillDescriptions()

void IsolatedPixelTrackCandidateProducer::fillDescriptions ( edm::ConfigurationDescriptions & descriptions )

static

Definition at line 59 of file IsolatedPixelTrackCandidateProducer.cc.

                                                                                                      {
   edm::ParameterSetDescription desc;
   std::vector<edm::InputTag> tracksrc = {edm::InputTag("hltPixelTracks")};
   desc.add<edm::InputTag>("L1eTauJetsSource", edm::InputTag("hltCaloStage2Digis", "Tau"));
   desc.add<double>("tauAssociationCone", 0.0);
   desc.add<double>("tauUnbiasCone", 1.2);
   desc.add<std::vector<edm::InputTag> >("PixelTracksSources", tracksrc);
   desc.add<double>("ExtrapolationConeSize", 1.0);
   desc.add<double>("PixelIsolationConeSizeAtEC", 40);
   desc.add<edm::InputTag>("L1GTSeedLabel", edm::InputTag("hltL1sIsoTrack"));
   desc.add<double>("MaxVtxDXYSeed", 101.0);
   desc.add<double>("MaxVtxDXYIsol", 101.0);
   desc.add<edm::InputTag>("VertexLabel", edm::InputTag("hltTrimmedPixelVertices"));
   desc.add<std::string>("MagFieldRecordName", "VolumeBasedMagneticField");
   desc.add<double>("minPTrack", 5.0);
   desc.add<double>("maxPTrackForIsolation", 3.0);
   desc.add<double>("EBEtaBoundary", 1.479);
   descriptions.add("isolPixelTrackProd", desc);
 }

References edm::ConfigurationDescriptions::add(), submitPVResolutionJobs::desc, HLT_FULL_cff::InputTag, AlCaHLTBitMon_QueryRunRegistry::string, and SiPixelMonitorTrack_cfi::tracksrc.

◆ getDistInCM()

double IsolatedPixelTrackCandidateProducer::getDistInCM	(	double	eta1,
		double	phi1,
		double	eta2,
		double	phi2
	)

Definition at line 245 of file IsolatedPixelTrackCandidateProducer.cc.

                                                                                                           {
   double Rec;
   double theta1 = 2 * atan(exp(-eta1));
   double theta2 = 2 * atan(exp(-eta2));
   if (std::abs(eta1) < 1.479)
     Rec = rEB_;  //radius of ECAL barrel
   else if (std::abs(eta1) > 1.479 && std::abs(eta1) < 7.0)
     Rec = tan(theta1) * zEE_;  //distance from IP to ECAL endcap
   else
     return 1000;
  
   //|vect| times tg of acos(scalar product)
   double angle =
       acos((sin(theta1) * sin(theta2) * (sin(phi1) * sin(phi2) + cos(phi1) * cos(phi2)) + cos(theta1) * cos(theta2)));
   if (angle < M_PI_2)
     return std::abs((Rec / sin(theta1)) * tan(angle));
   else
     return 1000;
 }

References funct::abs(), angle(), funct::cos(), HLT_FULL_cff::eta1, HLT_FULL_cff::eta2, JetChargeProducer_cfi::exp, M_PI_2, rEB_, funct::sin(), funct::tan(), and zEE_.

Referenced by produce().

◆ GetEtaPhiAtEcal()

std::pair< double, double > IsolatedPixelTrackCandidateProducer::GetEtaPhiAtEcal	(	double	etaIP,
		double	phiIP,
		double	pT,
		int	charge,
		double	vtxZ
	)

Definition at line 265 of file IsolatedPixelTrackCandidateProducer.cc.

                                                                     {
   double deltaPhi = 0;
   double etaEC = 100;
   double phiEC = 100;
  
   double Rcurv = 9999999;
   if (bfVal_ != 0)
     Rcurv = pT * 33.3 * 100 / (bfVal_ * 10);  //r(m)=pT(GeV)*33.3/B(kG)
  
   double ecDist = zEE_;  //distance to ECAL andcap from IP (cm), 317 - ecal (not preshower), preshower -300
   double ecRad = rEB_;   //radius of ECAL barrel (cm)
   double theta = 2 * atan(exp(-etaIP));
   double zNew = 0;
   if (theta > M_PI_2)
     theta = M_PI - theta;
   if (std::abs(etaIP) < ebEtaBoundary_) {
     if ((0.5 * ecRad / Rcurv) > 1) {
       etaEC = 10000;
       deltaPhi = 0;
     } else {
       deltaPhi = -charge * asin(0.5 * ecRad / Rcurv);
       double alpha1 = 2 * asin(0.5 * ecRad / Rcurv);
       double z = ecRad / tan(theta);
       if (etaIP > 0)
         zNew = z * (Rcurv * alpha1) / ecRad + vtxZ;  //new z-coordinate of track
       else
         zNew = -z * (Rcurv * alpha1) / ecRad + vtxZ;  //new z-coordinate of track
       double zAbs = std::abs(zNew);
       if (zAbs < ecDist) {
         etaEC = -log(tan(0.5 * atan(ecRad / zAbs)));
         deltaPhi = -charge * asin(0.5 * ecRad / Rcurv);
       }
       if (zAbs > ecDist) {
         zAbs = (std::abs(etaIP) / etaIP) * ecDist;
         double Zflight = std::abs(zAbs - vtxZ);
         double alpha = (Zflight * ecRad) / (z * Rcurv);
         double Rec = 2 * Rcurv * sin(alpha / 2);
         deltaPhi = -charge * alpha / 2;
         etaEC = -log(tan(0.5 * atan(Rec / ecDist)));
       }
     }
   } else {
     zNew = (std::abs(etaIP) / etaIP) * ecDist;
     double Zflight = std::abs(zNew - vtxZ);
     double Rvirt = std::abs(Zflight * tan(theta));
     double Rec = 2 * Rcurv * sin(Rvirt / (2 * Rcurv));
     deltaPhi = -(charge) * (Rvirt / (2 * Rcurv));
     etaEC = -log(tan(0.5 * atan(Rec / ecDist)));
   }
  
   if (zNew < 0)
     etaEC = -etaEC;
   phiEC = phiIP + deltaPhi;
  
   if (phiEC < -M_PI)
     phiEC += M_2_PI;
   if (phiEC > M_PI)
     phiEC -= M_2_PI;
  
   std::pair<double, double> retVal(etaEC, phiEC);
   return retVal;
 }

References funct::abs(), alpha, bfVal_, ALCARECOTkAlJpsiMuMu_cff::charge, SiPixelRawToDigiRegional_cfi::deltaPhi, ebEtaBoundary_, JetChargeProducer_cfi::exp, dqm-mbProfile::log, M_PI, M_PI_2, PVValHelper::pT, rEB_, funct::sin(), funct::tan(), theta(), z, and zEE_.

Referenced by produce().

◆ produce()

void IsolatedPixelTrackCandidateProducer::produce	(	edm::Event &	evt,
		const edm::EventSetup &	es
	)

override

Definition at line 96 of file IsolatedPixelTrackCandidateProducer.cc.

                                                                                                         {
   auto trackCollection = std::make_unique<reco::IsolatedPixelTrackCandidateCollection>();
  
   //create vector of refs from input collections
   std::vector<reco::TrackRef> pixelTrackRefs;
 #ifdef EDM_ML_DEBUG
   edm::LogVerbatim("HcalIsoTrack") << "IsolatedPixelTrakCandidate: with" << toks_pix_.size()
                                    << " candidates to start with\n";
 #endif
   for (unsigned int iPix = 0; iPix < toks_pix_.size(); iPix++) {
     edm::Handle<reco::TrackCollection> iPixCol;
     theEvent.getByToken(toks_pix_[iPix], iPixCol);
     for (reco::TrackCollection::const_iterator pit = iPixCol->begin(); pit != iPixCol->end(); pit++) {
       pixelTrackRefs.push_back(reco::TrackRef(iPixCol, pit - iPixCol->begin()));
     }
   }
  
   edm::Handle<l1extra::L1JetParticleCollection> l1eTauJets;
   theEvent.getByToken(tok_l1_, l1eTauJets);
  
   edm::Handle<reco::VertexCollection> pVert;
   theEvent.getByToken(tok_vert_, pVert);
  
   double drMaxL1Track_ = tauAssocCone_;
  
   int ntr = 0;
   std::vector<seedAtEC> VecSeedsatEC;
   //loop to select isolated tracks
   for (unsigned iS = 0; iS < pixelTrackRefs.size(); iS++) {
     bool vtxMatch = false;
     //associate to vertex (in Z)
     reco::VertexCollection::const_iterator vitSel;
     double minDZ = 1000;
     bool found(false);
     for (reco::VertexCollection::const_iterator vit = pVert->begin(); vit != pVert->end(); vit++) {
       if (std::abs(pixelTrackRefs[iS]->dz(vit->position())) < minDZ) {
         minDZ = std::abs(pixelTrackRefs[iS]->dz(vit->position()));
         vitSel = vit;
         found = true;
       }
     }
     //cut on dYX:
     if (found) {
       if (std::abs(pixelTrackRefs[iS]->dxy(vitSel->position())) < vtxCutSeed_)
         vtxMatch = true;
     } else {
       vtxMatch = true;
     }
  
     //check taujet matching
     bool tmatch = false;
     l1extra::L1JetParticleCollection::const_iterator selj;
     for (l1extra::L1JetParticleCollection::const_iterator tj = l1eTauJets->begin(); tj != l1eTauJets->end(); tj++) {
       if (reco::deltaR(pixelTrackRefs[iS]->momentum().eta(),
                        pixelTrackRefs[iS]->momentum().phi(),
                        tj->momentum().eta(),
                        tj->momentum().phi()) > drMaxL1Track_)
         continue;
       selj = tj;
       tmatch = true;
     }  //loop over L1 tau
  
     //propagate seed track to ECAL surface:
     std::pair<double, double> seedCooAtEC;
     // in case vertex is found:
     if (found)
       seedCooAtEC = GetEtaPhiAtEcal(pixelTrackRefs[iS]->eta(),
                                     pixelTrackRefs[iS]->phi(),
                                     pixelTrackRefs[iS]->pt(),
                                     pixelTrackRefs[iS]->charge(),
                                     vitSel->z());
     //in case vertex is not found:
     else
       seedCooAtEC = GetEtaPhiAtEcal(pixelTrackRefs[iS]->eta(),
                                     pixelTrackRefs[iS]->phi(),
                                     pixelTrackRefs[iS]->pt(),
                                     pixelTrackRefs[iS]->charge(),
                                     0);
     seedAtEC seed(iS, (tmatch || vtxMatch), seedCooAtEC.first, seedCooAtEC.second);
     VecSeedsatEC.push_back(seed);
   }
 #ifdef EDM_ML_DEBUG
   edm::LogVerbatim("HcalIsoTrack") << "IsolatedPixelTrakCandidate: " << VecSeedsatEC.size()
                                    << " seeds after propagation\n";
 #endif
  
   for (unsigned int i = 0; i < VecSeedsatEC.size(); i++) {
     unsigned int iSeed = VecSeedsatEC[i].index;
     if (!VecSeedsatEC[i].ok)
       continue;
     if (pixelTrackRefs[iSeed]->p() < minPTrackValue_)
       continue;
     l1extra::L1JetParticleCollection::const_iterator selj;
     for (l1extra::L1JetParticleCollection::const_iterator tj = l1eTauJets->begin(); tj != l1eTauJets->end(); tj++) {
       if (reco::deltaR(pixelTrackRefs[iSeed]->momentum().eta(),
                        pixelTrackRefs[iSeed]->momentum().phi(),
                        tj->momentum().eta(),
                        tj->momentum().phi()) > drMaxL1Track_)
         continue;
       selj = tj;
     }  //loop over L1 tau
     double maxP = 0;
     double sumP = 0;
     for (unsigned int j = 0; j < VecSeedsatEC.size(); j++) {
       if (i == j)
         continue;
       unsigned int iSurr = VecSeedsatEC[j].index;
       //define preliminary cone around seed track impact point from which tracks will be extrapolated:
       if (reco::deltaR(pixelTrackRefs[iSeed]->eta(),
                        pixelTrackRefs[iSeed]->phi(),
                        pixelTrackRefs[iSurr]->eta(),
                        pixelTrackRefs[iSurr]->phi()) > prelimCone_)
         continue;
       double minDZ2(1000);
       bool found(false);
       reco::VertexCollection::const_iterator vitSel2;
       for (reco::VertexCollection::const_iterator vit = pVert->begin(); vit != pVert->end(); vit++) {
         if (std::abs(pixelTrackRefs[iSurr]->dz(vit->position())) < minDZ2) {
           minDZ2 = std::abs(pixelTrackRefs[iSurr]->dz(vit->position()));
           vitSel2 = vit;
           found = true;
         }
       }
       //cut ot dXY:
       if (found && std::abs(pixelTrackRefs[iSurr]->dxy(vitSel2->position())) > vtxCutIsol_)
         continue;
       //calculate distance at ECAL surface and update isolation:
       if (getDistInCM(VecSeedsatEC[i].eta, VecSeedsatEC[i].phi, VecSeedsatEC[j].eta, VecSeedsatEC[j].phi) <
           pixelIsolationConeSizeAtEC_) {
         sumP += pixelTrackRefs[iSurr]->p();
         if (pixelTrackRefs[iSurr]->p() > maxP)
           maxP = pixelTrackRefs[iSurr]->p();
       }
     }
     if (maxP < maxPForIsolationValue_) {
       reco::IsolatedPixelTrackCandidate newCandidate(
           pixelTrackRefs[iSeed], l1extra::L1JetParticleRef(l1eTauJets, selj - l1eTauJets->begin()), maxP, sumP);
       newCandidate.setEtaPhiEcal(VecSeedsatEC[i].eta, VecSeedsatEC[i].phi);
       trackCollection->push_back(newCandidate);
       ntr++;
     }
   }
   // put the product in the event
   theEvent.put(std::move(trackCollection));
 #ifdef EDM_ML_DEBUG
   edm::LogVerbatim("HcalIsoTrack") << "IsolatedPixelTrackCandidate: Final # of candiates " << ntr << "\n";
 #endif
 }