PhotonTkIsolation Class Reference

#include <PhotonTkIsolation.h>

Public Member Functions
std::pair< int, float >	getIso (const reco::Candidate *) const
	PhotonTkIsolation (float extRadius, float intRadius, float etLow, float lip, float drb, const reco::TrackCollection *trackCollection, reco::TrackBase::Point beamPoint)
	PhotonTkIsolation (float extRadius, float intRadius, float strip, float etLow, float lip, float drb, const reco::TrackCollection *trackCollection, reco::TrackBase::Point beamPoint)
	PhotonTkIsolation (float extRadius, float intRadiusBarrel, float intRadiusEndcap, float stripBarrel, float stripEndcap, float etLow, float lip, float drb, const reco::TrackCollection *trackCollection, reco::TrackBase::Point beamPoint)
	PhotonTkIsolation (float extRadius, float intRadiusBarrel, float intRadiusEndcap, float stripBarrel, float stripEndcap, float etLow, float lip, float drb, const reco::TrackCollection *, reco::TrackBase::Point beamPoint, const std::string &)
void	setDzOption (const std::string &s)
	~PhotonTkIsolation ()

Private Attributes
reco::TrackBase::Point	beamPoint_
float	drb_
int	dzOption_
float	etLow_
float	extRadius2_
float	intRadiusBarrel2_
float	intRadiusEndcap2_
float	lip_
float	stripBarrel_
float	stripEndcap_
const reco::TrackCollection *	trackCollection_

Detailed Description

Definition at line 20 of file PhotonTkIsolation.h.

Constructor & Destructor Documentation

PhotonTkIsolation::PhotonTkIsolation ( float  extRadius, float  intRadius, float  etLow, float  lip, float  drb, const reco::TrackCollection *  trackCollection, reco::TrackBase::Point  beamPoint  )

inline

Definition at line 23 of file PhotonTkIsolation.h.

References setDzOption().

      : extRadius2_(extRadius * extRadius),
        intRadiusBarrel2_(intRadius * intRadius),
        intRadiusEndcap2_(intRadius * intRadius),
        stripBarrel_(0.0),
        stripEndcap_(0.0),
        etLow_(etLow),
        lip_(lip),
        drb_(drb),
        trackCollection_(trackCollection),
        beamPoint_(beamPoint) {
    setDzOption("vz");
  }

PhotonTkIsolation::PhotonTkIsolation ( float  extRadius, float  intRadius, float  strip, float  etLow, float  lip, float  drb, const reco::TrackCollection *  trackCollection, reco::TrackBase::Point  beamPoint  )

inline

Definition at line 43 of file PhotonTkIsolation.h.

References setDzOption().

      : extRadius2_(extRadius * extRadius),
        intRadiusBarrel2_(intRadius * intRadius),
        intRadiusEndcap2_(intRadius * intRadius),
        stripBarrel_(strip),
        stripEndcap_(strip),
        etLow_(etLow),
        lip_(lip),
        drb_(drb),
        trackCollection_(trackCollection),
        beamPoint_(beamPoint) {
    setDzOption("vz");
  }

PhotonTkIsolation::PhotonTkIsolation ( float  extRadius, float  intRadiusBarrel, float  intRadiusEndcap, float  stripBarrel, float  stripEndcap, float  etLow, float  lip, float  drb, const reco::TrackCollection *  trackCollection, reco::TrackBase::Point  beamPoint  )

inline

Definition at line 64 of file PhotonTkIsolation.h.

References setDzOption().

      : extRadius2_(extRadius * extRadius),
        intRadiusBarrel2_(intRadiusBarrel * intRadiusBarrel),
        intRadiusEndcap2_(intRadiusEndcap * intRadiusEndcap),
        stripBarrel_(stripBarrel),
        stripEndcap_(stripEndcap),
        etLow_(etLow),
        lip_(lip),
        drb_(drb),
        trackCollection_(trackCollection),
        beamPoint_(beamPoint) {
    setDzOption("vz");
  }

PhotonTkIsolation::PhotonTkIsolation	(	float	extRadius,
		float	intRadiusBarrel,
		float	intRadiusEndcap,
		float	stripBarrel,
		float	stripEndcap,
		float	etLow,
		float	lip,
		float	drb,
		const reco::TrackCollection *	trackCollection,
		reco::TrackBase::Point	beamPoint,
		const std::string &	dzOptionString
	)

Definition at line 12 of file PhotonTkIsolation.cc.

References setDzOption().

    : extRadius2_(extRadius * extRadius),
      intRadiusBarrel2_(intRadiusBarrel * intRadiusBarrel),
      intRadiusEndcap2_(intRadiusEndcap * intRadiusEndcap),
      stripBarrel_(stripBarrel),
      stripEndcap_(stripEndcap),
      etLow_(etLow),
      lip_(lip),
      drb_(drb),
      trackCollection_(trackCollection),
      beamPoint_(beamPoint) {
  setDzOption(dzOptionString);
}

PhotonTkIsolation::~PhotonTkIsolation

(

)

Definition at line 49 of file PhotonTkIsolation.cc.

{}

Member Function Documentation

std::pair< int, float > PhotonTkIsolation::getIso

(

const reco::Candidate *

photon

)

const

Definition at line 52 of file PhotonTkIsolation.cc.

References beamPoint_, egammaisolation::EgammaTrackSelector::bs, counter, reco::deltaR2(), drb_, egammaisolation::EgammaTrackSelector::dz, dzOption_, reco::Candidate::eta(), etLow_, intRadiusBarrel2_, intRadiusEndcap2_, lip_, stripBarrel_, stripEndcap_, trackCollection_, reco::Candidate::vertex(), egammaisolation::EgammaTrackSelector::vtx, and egammaisolation::EgammaTrackSelector::vz.

Referenced by PhotonIsolationCalculator::calculateTrackIso(), EgammaPhotonTkNumIsolationProducer::produce(), and EgammaPhotonTkIsolationProducer::produce().

                                                                               {
  int counter = 0;
  float ptSum = 0.;

  //Take the photon position
  float photonEta = photon->eta();

  //loop over tracks
  for (reco::TrackCollection::const_iterator trItr = trackCollection_->begin(); trItr != trackCollection_->end();
       ++trItr) {
    //check z-distance of vertex
    float dzCut = 0;
    switch (dzOption_) {
      case egammaisolation::EgammaTrackSelector::dz:
        dzCut = fabs((*trItr).dz() - photon->vertex().z());
        break;
      case egammaisolation::EgammaTrackSelector::vz:
        dzCut = fabs((*trItr).vz() - photon->vertex().z());
        break;
      case egammaisolation::EgammaTrackSelector::bs:
        dzCut = fabs((*trItr).dz(beamPoint_) - photon->vertex().z());
        break;
      case egammaisolation::EgammaTrackSelector::vtx:
        dzCut = fabs((*trItr).dz(photon->vertex()));
        break;
      default:
        dzCut = fabs((*trItr).vz() - photon->vertex().z());
        break;
    }
    if (dzCut > lip_)
      continue;

    float this_pt = (*trItr).pt();
    if (this_pt < etLow_)
      continue;
    if (fabs((*trItr).dxy(beamPoint_)) > drb_)
      continue;  // only consider tracks from the main vertex
    float dr2 = reco::deltaR2(*trItr, *photon);
    float deta = (*trItr).eta() - photonEta;
    if (fabs(photonEta) < 1.479) {
      if (dr2 < extRadius2_ && dr2 >= intRadiusBarrel2_ && fabs(deta) >= stripBarrel_) {
        ++counter;
        ptSum += this_pt;
      }
    } else {
      if (dr2 < extRadius2_ && dr2 >= intRadiusEndcap2_ && fabs(deta) >= stripEndcap_) {
        ++counter;
        ptSum += this_pt;
      }
    }

  }  //end loop over tracks

  std::pair<int, float> retval;
  retval.first = counter;
  retval.second = ptSum;
  return retval;
}

void PhotonTkIsolation::setDzOption

(

const std::string &

s

)

Definition at line 36 of file PhotonTkIsolation.cc.

References egammaisolation::EgammaTrackSelector::bs, egammaisolation::EgammaTrackSelector::dz, dzOption_, egammaisolation::EgammaTrackSelector::vtx, and egammaisolation::EgammaTrackSelector::vz.

Referenced by PhotonTkIsolation().

                                                      {
  if (!s.compare("dz"))
    dzOption_ = egammaisolation::EgammaTrackSelector::dz;
  else if (!s.compare("vz"))
    dzOption_ = egammaisolation::EgammaTrackSelector::vz;
  else if (!s.compare("bs"))
    dzOption_ = egammaisolation::EgammaTrackSelector::bs;
  else if (!s.compare("vtx"))
    dzOption_ = egammaisolation::EgammaTrackSelector::vtx;
  else
    dzOption_ = egammaisolation::EgammaTrackSelector::dz;
}

Member Data Documentation

reco::TrackBase::Point PhotonTkIsolation::beamPoint_

private

Definition at line 118 of file PhotonTkIsolation.h.

Referenced by getIso().

float PhotonTkIsolation::drb_

private

Definition at line 115 of file PhotonTkIsolation.h.

Referenced by getIso().

int PhotonTkIsolation::dzOption_

private

Definition at line 120 of file PhotonTkIsolation.h.

Referenced by getIso(), and setDzOption().

float PhotonTkIsolation::etLow_

private

Definition at line 113 of file PhotonTkIsolation.h.

Referenced by getIso().

float PhotonTkIsolation::extRadius2_

private

Definition at line 108 of file PhotonTkIsolation.h.

float PhotonTkIsolation::intRadiusBarrel2_

private

Definition at line 109 of file PhotonTkIsolation.h.

Referenced by getIso().

float PhotonTkIsolation::intRadiusEndcap2_

private

Definition at line 110 of file PhotonTkIsolation.h.

Referenced by getIso().

float PhotonTkIsolation::lip_

private

Definition at line 114 of file PhotonTkIsolation.h.

Referenced by getIso().

float PhotonTkIsolation::stripBarrel_

private

Definition at line 111 of file PhotonTkIsolation.h.

Referenced by getIso().

float PhotonTkIsolation::stripEndcap_

private

Definition at line 112 of file PhotonTkIsolation.h.

Referenced by getIso().

const reco::TrackCollection* PhotonTkIsolation::trackCollection_

private

Definition at line 117 of file PhotonTkIsolation.h.

Referenced by getIso().