JetTracksAssociationDRCalo Class Reference

#include <JetTracksAssociationDRCalo.h>

Public Member Functions
	JetTracksAssociationDRCalo (double fDr)
void	produce (reco::JetTracksAssociation::Container *fAssociation, const std::vector< edm::RefToBase< reco::Jet > > &fJets, const std::vector< reco::TrackRef > &fTracks, const MagneticField &fField, const Propagator &fPropagator) const
	~JetTracksAssociationDRCalo ()

Static Public Member Functions
static math::XYZPoint	propagateTrackToCalorimeter (const reco::Track &fTrack, const MagneticField &fField, const Propagator &fPropagator)
	propagating the track to the Calorimeter More...

Private Attributes
double	mDeltaR2Threshold
	fidutial dR between track in the vertex and jet's reference direction More...

Detailed Description

Definition at line 14 of file JetTracksAssociationDRCalo.h.

Constructor & Destructor Documentation

JetTracksAssociationDRCalo::JetTracksAssociationDRCalo

(

double

fDr

)

Definition at line 105 of file JetTracksAssociationDRCalo.cc.

: mDeltaR2Threshold (fDr*fDr)
{}

JetTracksAssociationDRCalo::~JetTracksAssociationDRCalo ( )

inline

Definition at line 17 of file JetTracksAssociationDRCalo.h.

References produce(), and propagateTrackToCalorimeter().

{}

Member Function Documentation

void JetTracksAssociationDRCalo::produce	(	reco::JetTracksAssociation::Container *	fAssociation,
		const std::vector< edm::RefToBase< reco::Jet > > &	fJets,
		const std::vector< reco::TrackRef > &	fTracks,
		const MagneticField &	fField,
		const Propagator &	fPropagator
	)		const

Definition at line 109 of file JetTracksAssociationDRCalo.cc.

References PV3DBase< T, PVType, FrameType >::barePhi(), reco::deltaR2(), PVValHelper::eta, PV3DBase< T, PVType, FrameType >::eta(), reco::LeafCandidate::eta(), spr::goodTrack(), metsig::jet, reco::btau::jetEta, reco::btau::jetPhi, PV3DBase< T, PVType, FrameType >::mag(), mDeltaR2Threshold, phi, reco::LeafCandidate::phi(), edm::RefVector< C, T, F >::push_back(), reco::JetTracksAssociation::setValue(), and protons_cff::t.

Referenced by ~JetTracksAssociationDRCalo().

{
  // cache track parameters
  std::vector<ImpactPoint> impacts;
  for (unsigned t = 0; t < fTracks.size(); ++t) {
    GlobalPoint impact = propagateTrackToCalo (*(fTracks[t]), fField, fPropagator);
    if (impact.mag () > 0) { // successful extrapolation
      ImpactPoint goodTrack;
      goodTrack.index = t;
      goodTrack.eta = impact.eta ();
      goodTrack.phi = impact.barePhi();
      impacts.push_back (goodTrack);
    }
  }
  
  for (unsigned j = 0; j < fJets.size(); ++j) {
    reco::TrackRefVector assoTracks;
    const reco::Jet* jet = &*(fJets[j]); 
    double jetEta = jet->eta();
    double jetPhi = jet->phi();
    for (unsigned t = 0; t < impacts.size(); ++t) {
      double dR2 = deltaR2 (jetEta, jetPhi, impacts[t].eta, impacts[t].phi);
      if (dR2 < mDeltaR2Threshold)  assoTracks.push_back (fTracks[impacts[t].index]);
    }
    reco::JetTracksAssociation::setValue (fAssociation, fJets[j], assoTracks);
  }
}

math::XYZPoint JetTracksAssociationDRCalo::propagateTrackToCalorimeter ( const reco::Track &  fTrack, const MagneticField &  fField, const Propagator &  fPropagator  )

static

propagating the track to the Calorimeter

Definition at line 141 of file JetTracksAssociationDRCalo.cc.

References mps_fire::result, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by ~JetTracksAssociationDRCalo().

{
  GlobalPoint result (propagateTrackToCalo (fTrack, fField, fPropagator));
  return math::XYZPoint (result.x(), result.y(), result.z()); 
}

Member Data Documentation

double JetTracksAssociationDRCalo::mDeltaR2Threshold

private

fidutial dR between track in the vertex and jet's reference direction

Definition at line 31 of file JetTracksAssociationDRCalo.h.

Referenced by produce().