Inheritance diagram for CaloRecoTauDiscriminationByFlightPathSignificance:

Public Member Functions
void	beginEvent (const edm::Event &, const edm::EventSetup &)
	CaloRecoTauDiscriminationByFlightPathSignificance (const edm::ParameterSet &iConfig)
double	discriminate (const reco::CaloTauRef &)
	~CaloRecoTauDiscriminationByFlightPathSignificance ()
Private Member Functions
double	threeProngFlightPathSig (const CaloTauRef &)
double	vertexSignificance (reco::Vertex &, reco::Vertex &, GlobalVector &)
Private Attributes
bool	booleanOutput
double	flightPathSig
reco::Vertex	primaryVertex
edm::InputTag	PVProducer
const TransientTrackBuilder *	transientTrackBuilder
bool	withPVError

Detailed Description

Definition at line 22 of file CaloRecoTauDiscriminationByFlightPathSignificance.cc.

Constructor & Destructor Documentation

CaloRecoTauDiscriminationByFlightPathSignificance::CaloRecoTauDiscriminationByFlightPathSignificance ( const edm::ParameterSet & iConfig ) [inline, explicit]

Definition at line 24 of file CaloRecoTauDiscriminationByFlightPathSignificance.cc.

References edm::ParameterSet::getParameter(), and PFRecoTauDiscriminationByECALIsolation_cfi::PVProducer.

        :CaloTauDiscriminationProducerBase(iConfig) {
      flightPathSig             = iConfig.getParameter<double>("flightPathSig");
      withPVError               = iConfig.getParameter<bool>("UsePVerror");

      PVProducer                = iConfig.getParameter<edm::InputTag>("PVProducer");

      booleanOutput             = iConfig.getParameter<bool>("BooleanOutput");
    }

CaloRecoTauDiscriminationByFlightPathSignificance::~CaloRecoTauDiscriminationByFlightPathSignificance ( ) [inline]

Definition at line 34 of file CaloRecoTauDiscriminationByFlightPathSignificance.cc.

{}

Member Function Documentation

void CaloRecoTauDiscriminationByFlightPathSignificance::beginEvent	(	const edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)		`[virtual]`

Reimplemented from TauDiscriminationProducerBase< TauType, TauDiscriminator >.

Definition at line 52 of file CaloRecoTauDiscriminationByFlightPathSignificance.cc.

References edm::View< T >::begin(), edm::EventSetup::get(), edm::Event::getByLabel(), edm::ESHandle< T >::product(), PFRecoTauDiscriminationByECALIsolation_cfi::PVProducer, and GoodVertex_cfg::vertexCollection.

                                                        {
  //Primary vertex
  edm::Handle<edm::View<reco::Vertex> > vertexHandle;
  iEvent.getByLabel(PVProducer, vertexHandle);
  const edm::View<reco::Vertex>& vertexCollection(*vertexHandle);
  primaryVertex = *(vertexCollection.begin());
  // Transient Tracks
  edm::ESHandle<TransientTrackBuilder> builder;
  iSetup.get<TransientTrackRecord>().get("TransientTrackBuilder",builder);
  transientTrackBuilder = builder.product();
}

double CaloRecoTauDiscriminationByFlightPathSignificance::discriminate ( const reco::CaloTauRef & tau ) [virtual]

Implements TauDiscriminationProducerBase< TauType, TauDiscriminator >.

Definition at line 66 of file CaloRecoTauDiscriminationByFlightPathSignificance.cc.

                          {
  if(booleanOutput)
    return ( threeProngFlightPathSig(tau) > flightPathSig ? 1. : 0. );
  return threeProngFlightPathSig(tau);
}

double CaloRecoTauDiscriminationByFlightPathSignificance::threeProngFlightPathSig ( const CaloTauRef & tau ) [private]

Definition at line 74 of file CaloRecoTauDiscriminationByFlightPathSignificance.cc.

References i, TransientVertex::isValid(), edm::RefVector< C, T, F >::size(), and KalmanVertexFitter::vertex().

                          {
  double flightPathSignificance = 0;
  //Secondary vertex
  reco::TrackRefVector signalTracks = tau->signalTracks();
  vector<TransientTrack> transientTracks;
  for(size_t i = 0; i < signalTracks.size(); ++i){
    const TransientTrack transientTrack =
        transientTrackBuilder->build(signalTracks[i]);
    transientTracks.push_back(transientTrack);
  }
  if(transientTracks.size() > 1) {
    KalmanVertexFitter kvf(true);
    TransientVertex tv = kvf.vertex(transientTracks);
    if(tv.isValid()){
      GlobalVector tauDir(tau->px(), tau->py(), tau->pz());
      Vertex secVer = tv;
      flightPathSignificance = vertexSignificance(primaryVertex,secVer,tauDir);
    }
  }
  return flightPathSignificance;
}

double CaloRecoTauDiscriminationByFlightPathSignificance::vertexSignificance	(	reco::Vertex &	pv,
		reco::Vertex &	sv,
		GlobalVector &	direction
	)		`[private]`

Definition at line 98 of file CaloRecoTauDiscriminationByFlightPathSignificance.cc.

References reco::SecondaryVertex::computeDist3d(), and Measurement1D::significance().

                                                       {
  return SecondaryVertex::computeDist3d(
      pv,sv,direction,withPVError).significance();
}