Get track history and classify it in function of their . More...

#include <TrackClassifier.h>

Inheritance diagram for TrackClassifier:

Classes
struct	G4

struct	GeneratedPrimaryVertex
	Auxiliary class holding simulated primary vertices. More...

Public Types
typedef TrackCategories	Categories
	Type to the associate category. More...

Public Types inherited from TrackCategories
enum	Category { Fake = 0, Reconstructed = Fake, Bad, BadInnerHits, SharedInnerHits, SignalEvent, Bottom, Charm, Light, Muon, TrackerSimHits, BWeakDecay, CWeakDecay, ChargePionDecay, ChargeKaonDecay, TauDecay, KsDecay, LambdaDecay, JpsiDecay, XiDecay, OmegaDecay, SigmaPlusDecay, SigmaMinusDecay, LongLivedDecay, KnownProcess, UndefinedProcess, UnknownProcess, PrimaryProcess, HadronicProcess, DecayProcess, ComptonProcess, AnnihilationProcess, EIoniProcess, HIoniProcess, MuIoniProcess, PhotonProcess, MuPairProdProcess, ConversionsProcess, EBremProcess, SynchrotronRadiationProcess, MuBremProcess, MuNuclProcess, FromBWeakDecayMuon, FromCWeakDecayMuon, DecayOnFlightMuon, FromChargePionMuon, FromChargeKaonMuon, PrimaryVertex, SecondaryVertex, TertiaryVertex, TierciaryVertex = TertiaryVertex, Unknown }
	Categories available to vertex. More...

typedef std::vector< bool >	Flags
	Main types associated to the class. More...

Public Member Functions
TrackClassifier const &	evaluate (reco::TrackBaseRef const &)
	Classify the RecoTrack in categories. More...

TrackClassifier const &	evaluate (TrackingParticleRef const &)
	Classify the TrackingParticle in categories. More...

TrackClassifier const &	evaluate (reco::TrackRef const &track)
	Classify the RecoTrack in categories. More...

TrackHistory const &	history () const
	Returns a reference to the track history used in the classification. More...

void	newEvent (edm::Event const &, edm::EventSetup const &)
	Pre-process event information (for accessing reconstraction information) More...

TrackQuality const &	quality () const
	Returns a reference to the track quality used in the classification. More...

	TrackClassifier (edm::ParameterSet const &)
	Constructor by ParameterSet. More...

Public Member Functions inherited from TrackCategories
const Flags &	flags () const
	Returns flags with the category descriptions. More...

bool	is (Category category) const
	Returns track flag for a given category. More...

	TrackCategories ()
	Void constructor. More...

Private Member Functions
void	genPrimaryVertices ()

void	hadronFlavor ()
	Get hadron flavor of the initial hadron. More...

bool	isCharged (const HepMC::GenParticle *)

bool	isFinalstateParticle (const HepMC::GenParticle *)

void	processesAtGenerator ()
	Get all the information related to decay process. More...

void	processesAtSimulation ()
	Get information about conversion and other interactions. More...

void	qualityInformation (reco::TrackBaseRef const &)
	Classify all the tracks by their reconstruction quality. More...

void	reconstructionInformation (reco::TrackBaseRef const &)
	Classify all the tracks by their association and reconstruction information. More...

void	simulationInformation ()
	Get all the information related to the simulation details. More...

void	vertexInformation ()
	Get geometrical information about the vertices. More...

Private Attributes
double	badPull_

edm::Handle< reco::BeamSpot >	beamSpot_

const edm::InputTag	beamSpotLabel_

std::vector < GeneratedPrimaryVertex >	genpvs_

const edm::InputTag	hepMCLabel_

double	longLivedDecayLength_

edm::ESHandle< MagneticField >	magneticField_

edm::Handle< edm::HepMCProduct >	mcInformation_

unsigned int	minTrackerSimHits_

unsigned int	numberOfInnerLayers_

edm::ESHandle< ParticleDataTable >	particleDataTable_

TrackQuality	quality_

TrackHistory	tracer_

edm::ESHandle < TransientTrackBuilder >	transientTrackBuilder_

double	vertexClusteringSqDistance_

Additional Inherited Members
Static Public Attributes inherited from TrackCategories
static const char *	Names []
	Name of the different categories. More...

Protected Member Functions inherited from TrackCategories
void	reset ()
	Reset the categories flags. More...

void	unknownTrack ()

Protected Attributes inherited from TrackCategories
Flags	flags_
	Flag containers. More...

Detailed Description

Get track history and classify it in function of their .

Definition at line 26 of file TrackClassifier.h.

Member Typedef Documentation

typedef TrackCategories TrackClassifier::Categories

Type to the associate category.

Definition at line 32 of file TrackClassifier.h.

Constructor & Destructor Documentation

TrackClassifier::TrackClassifier ( edm::ParameterSet const & config )

Constructor by ParameterSet.

Definition at line 12 of file TrackClassifier.cc.

References badPull_, HistoryBase::depth(), edm::ParameterSet::getUntrackedParameter(), longLivedDecayLength_, minTrackerSimHits_, numberOfInnerLayers_, tracer_, and vertexClusteringSqDistance_.

                                                                : TrackCategories(),
         hepMCLabel_( config.getUntrackedParameter<edm::InputTag>("hepMC") ),
         beamSpotLabel_( config.getUntrackedParameter<edm::InputTag>("beamSpot") ),
         tracer_(config),
         quality_(config)
 {
     // Set the history depth after hadronization
     tracer_.depth(-2);
 
     // Set the maximum d0pull for the bad category
     badPull_ = config.getUntrackedParameter<double>("badPull");
 
     // Set the minimum decay length for detecting long decays
     longLivedDecayLength_ = config.getUntrackedParameter<double>("longLivedDecayLength");
 
     // Set the distance for clustering vertices
     float vertexClusteringDistance = config.getUntrackedParameter<double>("vertexClusteringDistance");
     vertexClusteringSqDistance_ = vertexClusteringDistance * vertexClusteringDistance;
 
     // Set the number of innermost layers to check for bad hits
     numberOfInnerLayers_ = config.getUntrackedParameter<unsigned int>("numberOfInnerLayers");
 
     // Set the minimum number of simhits in the tracker
     minTrackerSimHits_ = config.getUntrackedParameter<unsigned int>("minTrackerSimHits");
 }

Member Function Documentation

TrackClassifier const & TrackClassifier::evaluate ( reco::TrackBaseRef const & track )

Classify the RecoTrack in categories.

Definition at line 67 of file TrackClassifier.cc.

References TrackHistory::evaluate(), TrackCategories::Fake, TrackCategories::flags_, hadronFlavor(), processesAtGenerator(), processesAtSimulation(), qualityInformation(), reconstructionInformation(), TrackCategories::reset(), simulationInformation(), tracer_, TrackCategories::unknownTrack(), and vertexInformation().

Referenced by TrackCategoriesAnalyzer::analyze(), TrackingParticleCategoriesAnalyzer::analyze(), TrackHistoryAnalyzer::analyze(), TrackClassifierByProxy< Collection >::evaluate(), evaluate(), QualityCutsAnalyzer::LoopOverJetTracksAssociation(), and JetVetoedTracksAssociationDRVertex::produce().

 {
     // Initializing the category vector
     reset();
 
     // Associate and evaluate the track history (check for fakes)
     if ( tracer_.evaluate(track) )
     {
         // Classify all the tracks by their association and reconstruction information
         reconstructionInformation(track);
 
         // Get all the information related to the simulation details
         simulationInformation();
 
         // Analyse the track reconstruction quality
         qualityInformation(track);
 
         // Get hadron flavor of the initial hadron
         hadronFlavor();
 
         // Get all the information related to decay process
         processesAtGenerator();
 
         // Get information about conversion and other interactions
         processesAtSimulation();
 
         // Get geometrical information about the vertices
         vertexInformation();
 
         // Check for unkown classification
         unknownTrack();
     }
     else
         flags_[Fake] = true;
 
     return *this;
 }

TrackClassifier const & TrackClassifier::evaluate ( TrackingParticleRef const & track )

Classify the TrackingParticle in categories.

Definition at line 106 of file TrackClassifier.cc.

References TrackHistory::evaluate(), TrackCategories::flags_, hadronFlavor(), edm::RefToBase< T >::isNonnull(), processesAtGenerator(), processesAtSimulation(), qualityInformation(), TrackCategories::Reconstructed, reconstructionInformation(), Reconstruction_cff::recotrack, TrackHistory::recoTrack(), TrackCategories::reset(), simulationInformation(), tracer_, TrackCategories::unknownTrack(), and vertexInformation().

 {
     // Initializing the category vector
     reset();
 
     // Trace the history for the given TP
     tracer_.evaluate(track);
 
     // Collect the associated reco track
     const reco::TrackBaseRef & recotrack = tracer_.recoTrack();
 
     // If there is a reco truck then evaluate the simulated history
     if ( recotrack.isNonnull() )
     {
         flags_[Reconstructed] = true;
         // Classify all the tracks by their association and reconstruction information
         reconstructionInformation(recotrack);
         // Analyse the track reconstruction quality
         qualityInformation(recotrack);
     }
     else
         flags_[Reconstructed] = false;
 
     // Get all the information related to the simulation details
     simulationInformation();
 
     // Get hadron flavor of the initial hadron
     hadronFlavor();
 
     // Get all the information related to decay process
     processesAtGenerator();
 
     // Get information about conversion and other interactions
     processesAtSimulation();
 
     // Get geometrical information about the vertices
     vertexInformation();
 
     // Check for unkown classification
     unknownTrack();
 
     return *this;
 }

TrackClassifier const& TrackClassifier::evaluate ( reco::TrackRef const & track )

inline

Classify the RecoTrack in categories.

Definition at line 47 of file TrackClassifier.h.

References evaluate().

     {
         return evaluate( reco::TrackBaseRef(track) );
     }

void TrackClassifier::genPrimaryVertices ( )

private

Definition at line 564 of file TrackClassifier.cc.

References abs, event(), spr::find(), genpvs_, isCharged(), isFinalstateParticle(), m, mcInformation_, parents, pos, funct::pow(), python.multivaluedict::sort(), and vertexClusteringSqDistance_.

Referenced by newEvent().

 {
     genpvs_.clear();
 
     const HepMC::GenEvent * event = mcInformation_->GetEvent();
 
     if (event)
     {
         int idx = 0;
 
         // Loop over the different GenVertex
         for ( HepMC::GenEvent::vertex_const_iterator ivertex = event->vertices_begin(); ivertex != event->vertices_end(); ++ivertex )
         {
             bool hasParentVertex = false;
 
             // Loop over the parents looking to see if they are coming from a production vertex
             for (
                 HepMC::GenVertex::particle_iterator iparent = (*ivertex)->particles_begin(HepMC::parents);
                 iparent != (*ivertex)->particles_end(HepMC::parents);
                 ++iparent
             )
                 if ( (*iparent)->production_vertex() )
                 {
                     hasParentVertex = true;
                     break;
                 }
 
             // Reject those vertices with parent vertices
             if (hasParentVertex) continue;
 
             // Get the position of the vertex
             HepMC::FourVector pos = (*ivertex)->position();
 
             double const mm = 0.1;
 
             GeneratedPrimaryVertex pv(pos.x()*mm, pos.y()*mm, pos.z()*mm);
 
             std::vector<GeneratedPrimaryVertex>::iterator ientry = genpvs_.begin();
 
             // Search for a VERY close vertex in the list
             for (; ientry != genpvs_.end(); ++ientry)
             {
                 double distance2 = pow(pv.x - ientry->x, 2) + pow(pv.y - ientry->y, 2) + pow(pv.z - ientry->z, 2);
                 if ( distance2 < vertexClusteringSqDistance_ )
                     break;
             }
 
             // Check if there is not a VERY close vertex and added to the list
             if (ientry == genpvs_.end())
                 ientry = genpvs_.insert(ientry,pv);
 
             // Add the vertex barcodes to the new or existent vertices
             ientry->genVertex.push_back((*ivertex)->barcode());
 
             // Collect final state descendants
             for (
                 HepMC::GenVertex::particle_iterator idecendants  = (*ivertex)->particles_begin(HepMC::descendants);
                 idecendants != (*ivertex)->particles_end(HepMC::descendants);
                 ++idecendants
             )
             {
                 if (isFinalstateParticle(*idecendants))
                     if ( find(ientry->finalstateParticles.begin(), ientry->finalstateParticles.end(), (*idecendants)->barcode()) == ientry->finalstateParticles.end() )
                     {
                         ientry->finalstateParticles.push_back((*idecendants)->barcode());
                         HepMC::FourVector m = (*idecendants)->momentum();
 
                         ientry->ptot.setPx(ientry->ptot.px() + m.px());
                         ientry->ptot.setPy(ientry->ptot.py() + m.py());
                         ientry->ptot.setPz(ientry->ptot.pz() + m.pz());
                         ientry->ptot.setE(ientry->ptot.e() + m.e());
                         ientry->ptsq += m.perp() * m.perp();
 
                         if ( m.perp() > 0.8 && std::abs(m.pseudoRapidity()) < 2.5 && isCharged(*idecendants) ) ientry->nGenTrk++;
                     }
             }
             idx++;
         }
     }
 
     std::sort(genpvs_.begin(), genpvs_.end());
 }

void TrackClassifier::hadronFlavor ( )

private

Get hadron flavor of the initial hadron.

Definition at line 254 of file TrackClassifier.cc.

References TrackCategories::Bottom, TrackCategories::Charm, TrackCategories::flags_, configurableAnalysis::GenParticle, HistoryBase::genParticle(), TrackCategories::Light, RecoTau_DiTaus_pt_20-420_cfg::ParticleID, evf::utils::pid, and tracer_.

Referenced by evaluate().

 {
     // Get the initial hadron
     const HepMC::GenParticle * particle = tracer_.genParticle();
 
     // Check for the initial hadron
     if (particle)
     {
         HepPDT::ParticleID pid(particle->pdg_id());
         flags_[Bottom] = pid.hasBottom();
         flags_[Charm] =  pid.hasCharm();
         flags_[Light] = !pid.hasCharm() && !pid.hasBottom();
     }
 }

TrackHistory const& TrackClassifier::history ( ) const

inline

Returns a reference to the track history used in the classification.

Definition at line 53 of file TrackClassifier.h.

References tracer_.

Referenced by TrackHistoryAnalyzer::analyze().

     {
         return tracer_;
     }

bool TrackClassifier::isCharged ( const HepMC::GenParticle * p )

private

Definition at line 551 of file TrackClassifier.cc.

References particleDataTable_.

Referenced by genPrimaryVertices().

 {
     const ParticleData * part = particleDataTable_->particle( p->pdg_id() );
     if (part)
         return part->charge()!=0;
     else
     {
         // the new/improved particle table doesn't know anti-particles
         return  particleDataTable_->particle( -p->pdg_id() ) != 0;
     }
 }

bool TrackClassifier::isFinalstateParticle ( const HepMC::GenParticle * p )

private

Definition at line 545 of file TrackClassifier.cc.

Referenced by genPrimaryVertices().

 {
     return !p->end_vertex() && p->status() == 1;
 }

void TrackClassifier::newEvent	(	edm::Event const &	event,
		edm::EventSetup const &	setup
	)

Pre-process event information (for accessing reconstraction information)

Definition at line 39 of file TrackClassifier.cc.

References beamSpot_, beamSpotLabel_, genPrimaryVertices(), edm::EventSetup::get(), edm::EventSetup::getData(), hepMCLabel_, magneticField_, mcInformation_, TrackHistory::newEvent(), TrackQuality::newEvent(), particleDataTable_, quality_, tracer_, and transientTrackBuilder_.

Referenced by TrackCategoriesAnalyzer::analyze(), TrackingParticleCategoriesAnalyzer::analyze(), TrackHistoryAnalyzer::analyze(), QualityCutsAnalyzer::analyze(), TrackClassifierByProxy< Collection >::newEvent(), and JetVetoedTracksAssociatorAtVertex::produce().

 {
     // Get the new event information for the tracer
     tracer_.newEvent(event, setup);
 
     // Get the new event information for the track quality analyser
     quality_.newEvent(event, setup);
 
     // Get hepmc of the event
     event.getByLabel(hepMCLabel_, mcInformation_);
 
     // Magnetic field
     setup.get<IdealMagneticFieldRecord>().get(magneticField_);
 
     // Get the partivle data table
     setup.getData(particleDataTable_);
 
     // get the beam spot
     event.getByLabel(beamSpotLabel_, beamSpot_);
 
     // Transient track builder
     setup.get<TransientTrackRecord>().get("TransientTrackBuilder", transientTrackBuilder_);
 
     // Create the list of primary vertices associated to the event
     genPrimaryVertices();
 }

void TrackClassifier::processesAtGenerator ( )

private

Get all the information related to decay process.

Definition at line 270 of file TrackClassifier.cc.

Referenced by evaluate().

 {
     // pdgid of the "in" particle to the production vertex
     int pdgid = 0;
 
     // Get the generated particles from track history
     TrackHistory::GenParticleTrail const & genParticleTrail = tracer_.genParticleTrail();
 
     // Loop over the generated particles
     for (TrackHistory::GenParticleTrail::const_iterator iparticle = genParticleTrail.begin(); iparticle != genParticleTrail.end(); ++iparticle)
     {
         // Get the source vertex for the particle
         HepMC::GenVertex * productionVertex = (*iparticle)->production_vertex();
 
         // Get the pointer to the vertex by removing the const-ness (no const methos in HepMC::GenVertex)
         // HepMC::GenVertex * vertex = const_cast<HepMC::GenVertex *>(*ivertex);
 
         // Check for a non-null pointer to the production vertex
         if (productionVertex)
         {
             // Only case track history will navegate (one in or source particle per vertex)
             if ( productionVertex->particles_in_size() == 1 )
             {
                 // Look at the pdgid of the first "in" particle to the vertex
                 pdgid = std::abs((*productionVertex->particles_in_const_begin())->pdg_id());
                 // Get particle type
                 HepPDT::ParticleID particleID(pdgid);
 
                 // Check if the particle type is valid one
                 if (particleID.isValid())
                 {
                     // Get particle data
                     ParticleData const * particleData = particleDataTable_->particle(particleID);
                     // Check if the particle exist in the table
                     if (particleData)
                     {
                         // Check if their life time is bigger than longLivedDecayLength_
                         if ( particleData->lifetime() > longLivedDecayLength_ )
                             update(flags_[LongLivedDecay], true);
                         // Check for B and C weak decays
                         update(flags_[BWeakDecay], particleID.hasBottom());
                         update(flags_[CWeakDecay], particleID.hasCharm());
                         // Check for B and C pure leptonic decay
                         int daughterId = abs((*iparticle)->pdg_id());
                         update(flags_[FromBWeakDecayMuon], particleID.hasBottom() && daughterId == 13);
                         update(flags_[FromCWeakDecayMuon], particleID.hasCharm() && daughterId == 13);
                     }
                     // Check Tau, Ks and Lambda decay
                     update(flags_[ChargePionDecay], pdgid == 211);
                     update(flags_[ChargeKaonDecay], pdgid == 321);
                     update(flags_[TauDecay], pdgid == 15);
                     update(flags_[KsDecay], pdgid == 310);
                     update(flags_[LambdaDecay], pdgid == 3122);
                     update(flags_[JpsiDecay], pdgid == 443);
                     update(flags_[XiDecay], pdgid == 3312);
                     update(flags_[SigmaPlusDecay], pdgid == 3222);
                     update(flags_[SigmaMinusDecay], pdgid == 3112);
                 }
             }
         }
     }
     // Decays in flight
     update(flags_[FromChargePionMuon], flags_[Muon] && flags_[ChargePionDecay]);
     update(flags_[FromChargeKaonMuon], flags_[Muon] && flags_[ChargeKaonDecay]);
     update(flags_[DecayOnFlightMuon], (flags_[FromChargePionMuon] || flags_[FromChargeKaonMuon]));
 }

void TrackClassifier::processesAtSimulation ( )

private

Get information about conversion and other interactions.

Definition at line 338 of file TrackClassifier.cc.

Referenced by evaluate().

 {
     TrackHistory::SimParticleTrail const & simParticleTrail = tracer_.simParticleTrail();
 
     // Loop over the simulated particles
     for (
         TrackHistory::SimParticleTrail::const_iterator iparticle = simParticleTrail.begin();
         iparticle != simParticleTrail.end();
         ++iparticle
     )
     {
         // pdgid of the real source parent vertex
         int pdgid = 0;
 
         // Get a reference to the TP's parent vertex
         TrackingVertexRef const & parentVertex = (*iparticle)->parentVertex();
 
         // Look for the original source track
         if ( parentVertex.isNonnull() )
         {
             // select the original source in case of combined vertices
             bool flag = false;
             TrackingVertex::tp_iterator itd, its;
 
             for (its = parentVertex->sourceTracks_begin(); its != parentVertex->sourceTracks_end(); ++its)
             {
                 for (itd = parentVertex->daughterTracks_begin(); itd != parentVertex->daughterTracks_end(); ++itd)
                     if (itd != its)
                     {
                         flag = true;
                         break;
                     }
                 if (flag)
                     break;
             }
 
             // Collect the pdgid of the original source track
             if ( its != parentVertex->sourceTracks_end() )
                 pdgid = std::abs((*its)->pdgId());
             else
                 pdgid = 0;
         }
 
         // Check for the number of psimhit if different from zero
         if ((*iparticle)->trackPSimHit().empty()) continue;
 
         // Collect the G4 process of the first psimhit (it should be the same for all of them)
         unsigned short process = (*iparticle)->pSimHit_begin()->processType();
 
         // Flagging all the different processes
 
         update(
             flags_[KnownProcess],
             process != G4::Undefined &&
             process != G4::Unknown &&
             process != G4::Primary
         );
 
         update(flags_[UndefinedProcess], process == G4::Undefined);
         update(flags_[UnknownProcess], process == G4::Unknown);
         update(flags_[PrimaryProcess], process == G4::Primary);
         update(flags_[HadronicProcess], process == G4::Hadronic);
         update(flags_[DecayProcess], process == G4::Decay);
         update(flags_[ComptonProcess], process == G4::Compton);
         update(flags_[AnnihilationProcess], process == G4::Annihilation);
         update(flags_[EIoniProcess], process == G4::EIoni);
         update(flags_[HIoniProcess], process == G4::HIoni);
         update(flags_[MuIoniProcess], process == G4::MuIoni);
         update(flags_[PhotonProcess], process == G4::Photon);
         update(flags_[MuPairProdProcess], process == G4::MuPairProd);
         update(flags_[ConversionsProcess], process == G4::Conversions);
         update(flags_[EBremProcess], process == G4::EBrem);
         update(flags_[SynchrotronRadiationProcess], process == G4::SynchrotronRadiation);
         update(flags_[MuBremProcess], process == G4::MuBrem);
         update(flags_[MuNuclProcess], process == G4::MuNucl);
 
         // Get particle type
         HepPDT::ParticleID particleID(pdgid);
 
         // Check if the particle type is valid one
         if (particleID.isValid())
         {
             // Get particle data
             ParticleData const * particleData = particleDataTable_->particle(particleID);
             // Special treatment for decays
             if (process == G4::Decay)
             {
                 // Check if the particle exist in the table
                 if (particleData)
                 {
                     // Check if their life time is bigger than 1e-14
                     if ( particleDataTable_->particle(particleID)->lifetime() > longLivedDecayLength_ )
                         update(flags_[LongLivedDecay], true);
 
                     // Check for B and C weak decays
                     update(flags_[BWeakDecay], particleID.hasBottom());
                     update(flags_[CWeakDecay], particleID.hasCharm());
 
                     // Check for B or C pure leptonic decays
                     int daughtId = abs((*iparticle)->pdgId());
                     update(flags_[FromBWeakDecayMuon], particleID.hasBottom() && daughtId == 13);
                     update(flags_[FromCWeakDecayMuon], particleID.hasCharm() && daughtId == 13);
                 }
                 // Check decays
                 update(flags_[ChargePionDecay], pdgid == 211);
                 update(flags_[ChargeKaonDecay], pdgid == 321);
                 update(flags_[TauDecay], pdgid == 15);
                 update(flags_[KsDecay], pdgid == 310);
                 update(flags_[LambdaDecay], pdgid == 3122);
                 update(flags_[JpsiDecay], pdgid == 443);
                 update(flags_[XiDecay], pdgid == 3312);
                 update(flags_[OmegaDecay], pdgid == 3334);
                 update(flags_[SigmaPlusDecay], pdgid == 3222);
                 update(flags_[SigmaMinusDecay], pdgid == 3112);
             }
         }
     }
     // Decays in flight
     update(flags_[FromChargePionMuon], flags_[Muon] && flags_[ChargePionDecay]);
     update(flags_[FromChargeKaonMuon], flags_[Muon] && flags_[ChargeKaonDecay]);
     update(flags_[DecayOnFlightMuon], flags_[FromChargePionMuon] || flags_[FromChargeKaonMuon]);
 }

TrackQuality const& TrackClassifier::quality ( void ) const

inline

Returns a reference to the track quality used in the classification.

Definition at line 59 of file TrackClassifier.h.

References quality_.

     {
         return quality_;
     }

void TrackClassifier::qualityInformation ( reco::TrackBaseRef const & track )

private

Classify all the tracks by their reconstruction quality.

Definition at line 226 of file TrackClassifier.cc.

References TrackCategories::BadInnerHits, TrackQuality::evaluate(), TrackCategories::flags_, TrackQuality::Layer::hits, i, j, TrackQuality::layer(), min, TrackQuality::Layer::Misassoc, TrackQuality::Layer::Noise, numberOfInnerLayers_, TrackQuality::numberOfLayers(), quality_, TrackQuality::Layer::Shared, TrackCategories::SharedInnerHits, HistoryBase::simParticleTrail(), TrackQuality::Layer::Hit::state, and tracer_.

Referenced by evaluate().

 {
     // run the hit-by-hit reconstruction quality analysis
     quality_.evaluate(tracer_.simParticleTrail(), track);
 
     unsigned int maxLayers = std::min(numberOfInnerLayers_, quality_.numberOfLayers());
 
     // check the innermost layers for bad hits
     for (unsigned int i = 0; i < maxLayers; i++)
     {
         const TrackQuality::Layer &layer = quality_.layer(i);
 
         // check all hits in that layer
         for (unsigned int j = 0; j < layer.hits.size(); j++)
         {
             const TrackQuality::Layer::Hit &hit = layer.hits[j];
 
             // In those cases the bad hit was used by track reconstruction
             if (hit.state == TrackQuality::Layer::Noise ||
                     hit.state == TrackQuality::Layer::Misassoc)
                 flags_[BadInnerHits] = true;
             else if (hit.state == TrackQuality::Layer::Shared)
                 flags_[SharedInnerHits] = true;
         }
     }
 }

void TrackClassifier::reconstructionInformation ( reco::TrackBaseRef const & track )

private

Classify all the tracks by their association and reconstruction information.

Definition at line 151 of file TrackClassifier.cc.

References abs, TrackCategories::Bad, badPull_, beamSpot_, reco::TrackBase::charge(), funct::cos(), reco::TrackBase::dxy(), reco::TrackBase::dxyError(), reco::TrackBase::dz(), reco::TrackBase::dzError(), cppFunctionSkipper::exception, TrackCategories::flags_, magneticField_, CoreSimTrack::momentum(), FreeTrajectoryState::momentum(), AlCaHLTBitMon_ParallelJobs::p, FreeTrajectoryState::position(), edm::ESHandle< class >::product(), HistoryBase::simParticle(), funct::sin(), TrajectoryStateClosestToPoint::theState(), tracer_, v, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by evaluate().

 {
     TrackingParticleRef tpr = tracer_.simParticle();
 
     // Compute tracking particle parameters at point of closest approach to the beamline
 
     const SimTrack * assocTrack = &(*tpr->g4Track_begin());
 
     FreeTrajectoryState ftsAtProduction(
         GlobalPoint(
             tpr->vertex().x(),
             tpr->vertex().y(),
             tpr->vertex().z()
         ),
         GlobalVector(
             assocTrack->momentum().x(),
             assocTrack->momentum().y(),
             assocTrack->momentum().z()
         ),
         TrackCharge(track->charge()),
         magneticField_.product()
     );
 
     try
     {
         TSCPBuilderNoMaterial tscpBuilder;
         TrajectoryStateClosestToPoint tsAtClosestApproach = tscpBuilder(
                     ftsAtProduction,
                     GlobalPoint(beamSpot_->x0(), beamSpot_->y0(), beamSpot_->z0())
                 );
 
         GlobalVector v = tsAtClosestApproach.theState().position()
                          - GlobalPoint(beamSpot_->x0(), beamSpot_->y0(), beamSpot_->z0());
         GlobalVector p = tsAtClosestApproach.theState().momentum();
 
         // Simulated dxy
         double dxySim = -v.x()*sin(p.phi()) + v.y()*cos(p.phi());
 
         // Simulated dz
         double dzSim = v.z() - (v.x()*p.x() + v.y()*p.y())*p.z()/p.perp2();
 
         // Calculate the dxy pull
         double dxyPull = std::abs(
                              track->dxy( reco::TrackBase::Point(beamSpot_->x0(), beamSpot_->y0(), beamSpot_->z0()) ) - dxySim
                          ) / track->dxyError();
 
         // Calculate the dx pull
         double dzPull = std::abs(
                             track->dz( reco::TrackBase::Point(beamSpot_->x0(), beamSpot_->y0(), beamSpot_->z0()) ) - dzSim
                         ) / track->dzError();
 
         // Return true if d0Pull > badD0Pull sigmas
         flags_[Bad] = (dxyPull > badPull_ || dzPull > badPull_);
 
     }
     catch (cms::Exception exception)
     {
         flags_[Bad] = true;
     }
 }

void TrackClassifier::simulationInformation ( )

private

Get all the information related to the simulation details.

Definition at line 213 of file TrackClassifier.cc.

References abs, EncodedEventId::bunchCrossing(), EncodedEventId::event(), TrackCategories::flags_, minTrackerSimHits_, TrackCategories::Muon, TrackCategories::SignalEvent, HistoryBase::simParticle(), tracer_, and TrackCategories::TrackerSimHits.

Referenced by evaluate().

 {
     // Get the event id for the initial TP.
     EncodedEventId eventId = tracer_.simParticle()->eventId();
     // Check for signal events
     flags_[SignalEvent] = !eventId.bunchCrossing() && !eventId.event();
     // Check for muons
     flags_[Muon] = (abs(tracer_.simParticle()->pdgId()) == 13);
     // Check for the number of psimhit in tracker
     flags_[TrackerSimHits] = tracer_.simParticle()->matchedHit() >= (int)minTrackerSimHits_;
 }

void TrackClassifier::vertexInformation ( )

private

Get geometrical information about the vertices.

Definition at line 462 of file TrackClassifier.cc.

References TrackCategories::flags_, HistoryBase::genParticleTrail(), genpvs_, AlCaHLTBitMon_ParallelJobs::p, dbtoconf::parent, funct::pow(), TrackCategories::PrimaryVertex, TrackCategories::SecondaryVertex, HistoryBase::simParticleTrail(), TrackCategories::TertiaryVertex, tracer_, vertexClusteringSqDistance_, TrackClassifier::GeneratedPrimaryVertex::x, TrackClassifier::GeneratedPrimaryVertex::y, and TrackClassifier::GeneratedPrimaryVertex::z.

Referenced by evaluate().

 {
     // Get the main primary vertex from the list
     GeneratedPrimaryVertex const & genpv = genpvs_.back();
 
     // Get the generated history of the tracks
     TrackHistory::GenParticleTrail & genParticleTrail = const_cast<TrackHistory::GenParticleTrail &> (tracer_.genParticleTrail());
 
     // Vertex counter
     int counter = 0;
 
     // Unit transformation from mm to cm
     double const mm = 0.1;
 
     double oldX = genpv.x;
     double oldY = genpv.y;
     double oldZ = genpv.z;
 
     // Loop over the generated particles
     for (
         TrackHistory::GenParticleTrail::reverse_iterator iparticle = genParticleTrail.rbegin();
         iparticle != genParticleTrail.rend();
         ++iparticle
     )
     {
         // Look for those with production vertex
         HepMC::GenVertex * parent = (*iparticle)->production_vertex();
         if (parent)
         {
             HepMC::ThreeVector p = parent->point3d();
 
             double distance2   = pow(p.x() * mm - genpv.x, 2) + pow(p.y() * mm - genpv.y, 2) + pow(p.z() * mm - genpv.z, 2);
             double difference2 = pow(p.x() * mm - oldX, 2)    + pow(p.y() * mm - oldY, 2)    + pow(p.z() * mm - oldZ, 2);
 
             // std::cout << "Distance2 : " << distance2 << " (" << p.x() * mm << "," << p.y() * mm << "," << p.z() * mm << ")" << std::endl;
             // std::cout << "Difference2 : " << difference2 << std::endl;
 
             if ( difference2 > vertexClusteringSqDistance_ )
             {
                 if ( distance2 > vertexClusteringSqDistance_ ) counter++;
                 oldX = p.x() * mm;
                 oldY = p.y() * mm;
                 oldZ = p.z() * mm;
             }
         }
     }
 
     TrackHistory::SimParticleTrail & simParticleTrail = const_cast<TrackHistory::SimParticleTrail &> (tracer_.simParticleTrail());
 
     // Loop over the generated particles
     for (
         TrackHistory::SimParticleTrail::reverse_iterator iparticle = simParticleTrail.rbegin();
         iparticle != simParticleTrail.rend();
         ++iparticle
     )
     {
         // Look for those with production vertex
         TrackingParticle::Point p = (*iparticle)->vertex();
 
         double distance2   = pow(p.x() - genpv.x, 2) + pow(p.y() - genpv.y, 2) + pow(p.z() - genpv.z, 2);
         double difference2 = pow(p.x() - oldX, 2)    + pow(p.y() - oldY, 2)    + pow(p.z() - oldZ, 2);
 
         // std::cout << "Distance2 : " << distance2 << " (" << p.x() << "," << p.y() << "," << p.z() << ")" << std::endl;
         // std::cout << "Difference2 : " << difference2 << std::endl;
 
         if ( difference2 > vertexClusteringSqDistance_ )
         {
             if ( distance2 > vertexClusteringSqDistance_ ) counter++;
             oldX = p.x();
             oldY = p.y();
             oldZ = p.z();
         }
     }
 
     if ( !counter )
         flags_[PrimaryVertex] = true;
     else if ( counter == 1 )
         flags_[SecondaryVertex] = true;
     else
         flags_[TertiaryVertex] = true;
 }