TrajectoryStateClosestToPoint Class Reference

#include <TrajectoryStateClosestToPoint.h>

Public Member Functions
void	calculateFTS () const
TrackCharge	charge () const
bool	hasError () const
bool	isValid () const
GlobalVector	momentum () const
const PerigeeTrajectoryError &	perigeeError () const
const PerigeeTrajectoryParameters &	perigeeParameters () const
GlobalPoint	position () const
double	pt () const
const GlobalPoint &	referencePoint () const
const FreeTrajectoryState &	theState () const
	TrajectoryStateClosestToPoint ()
	parameter dimension More...
	TrajectoryStateClosestToPoint (const PerigeeTrajectoryParameters &perigeeParameters, double pt, const GlobalPoint &referencePoint, const MagneticField *field)
	TrajectoryStateClosestToPoint (const PerigeeTrajectoryParameters &perigeeParameters, double pt, const PerigeeTrajectoryError &perigeeError, const GlobalPoint &referencePoint, const MagneticField *field)
	TrajectoryStateClosestToPoint (const FTS &originalFTS, const GlobalPoint &referencePoint)

Private Types
typedef FreeTrajectoryState	FTS
typedef TrajectoryStateOnSurface	TSOS

Private Attributes
bool	errorIsAvailable
const MagneticField *	theField
FTS	theFTS
bool	theFTSavailable
PerigeeTrajectoryParameters	theParameters
PerigeeTrajectoryError	thePerigeeError
double	thePt
GlobalPoint	theRefPoint
bool	valid

Friends
class	TrajectoryStateClosestToPointBuilder

Detailed Description

Trajectory state defined at a given point on the helix, which is the point of closest approach to the reference point. In addition to the FreeTrajectoryState at that point, it also gives the perigee parameters. This state can also be invalid, e.g. in case the propagation was not successful.

Definition at line 18 of file TrajectoryStateClosestToPoint.h.

Member Typedef Documentation

FTS

typedef FreeTrajectoryState TrajectoryStateClosestToPoint::FTS

private

Definition at line 20 of file TrajectoryStateClosestToPoint.h.

TSOS

typedef TrajectoryStateOnSurface TrajectoryStateClosestToPoint::TSOS

private

Definition at line 19 of file TrajectoryStateClosestToPoint.h.

Constructor & Destructor Documentation

TrajectoryStateClosestToPoint() [1/4]

TrajectoryStateClosestToPoint::TrajectoryStateClosestToPoint ( )

inline

parameter dimension

Definition at line 24 of file TrajectoryStateClosestToPoint.h.

: valid(false), theFTSavailable(false), errorIsAvailable(false) {}

TrajectoryStateClosestToPoint() [2/4]

TrajectoryStateClosestToPoint::TrajectoryStateClosestToPoint ( const PerigeeTrajectoryParameters &  perigeeParameters, double  pt, const GlobalPoint &  referencePoint, const MagneticField *  field  )

inline

Public constructor, which is used to convert perigee parameters to a FreeTrajectoryState. For the case where no error is provided.

Definition at line 31 of file TrajectoryStateClosestToPoint.h.

      : theField(field),
        theRefPoint(referencePoint),
        theParameters(perigeeParameters),
        thePt(pt),
        valid(true),
        theFTSavailable(false),
        errorIsAvailable(false) {}

TrajectoryStateClosestToPoint() [3/4]

TrajectoryStateClosestToPoint::TrajectoryStateClosestToPoint ( const PerigeeTrajectoryParameters &  perigeeParameters, double  pt, const PerigeeTrajectoryError &  perigeeError, const GlobalPoint &  referencePoint, const MagneticField *  field  )

inline

Public constructor, which is used to convert perigee parameters to a FreeTrajectoryState. For the case where an error is provided.

Definition at line 48 of file TrajectoryStateClosestToPoint.h.

      : theField(field),
        theRefPoint(referencePoint),
        theParameters(perigeeParameters),
        thePt(pt),
        thePerigeeError(perigeeError),
        valid(true),
        theFTSavailable(false),
        errorIsAvailable(true) {}

TrajectoryStateClosestToPoint() [4/4]

TrajectoryStateClosestToPoint::TrajectoryStateClosestToPoint	(	const FTS &	originalFTS,
		const GlobalPoint &	referencePoint
	)

Use the appropriate TrajectoryStateClosestToPointBuilder to get access to this constructor

Definition at line 6 of file TrajectoryStateClosestToPoint.cc.

References cms::Exception::category(), errorIsAvailable, cms::Exception::explainSelf(), PerigeeConversions::ftsToPerigeeError(), PerigeeConversions::ftsToPerigeeParameters(), FreeTrajectoryState::hasError(), GlobalTrajectoryParameters::magneticField(), FreeTrajectoryState::parameters(), referencePoint(), theField, theFTS, theParameters, thePerigeeError, thePt, and valid.

    : theFTS(originalFTS), theRefPoint(referencePoint), valid(true), theFTSavailable(true) {
  try {
    theParameters = PerigeeConversions::ftsToPerigeeParameters(originalFTS, referencePoint, thePt);
    if (theFTS.hasError()) {
      thePerigeeError = PerigeeConversions::ftsToPerigeeError(originalFTS);
      errorIsAvailable = true;
    } else {
      errorIsAvailable = false;
    }
    theField = &(originalFTS.parameters().magneticField());
  } catch (const cms::Exception& ex) {
    if (ex.category() != "PerigeeConversions")
      throw;
    edm::LogInfo("TrajectoryStateClosestToPoint_PerigeeConversions")
        << "Caught exception " << ex.explainSelf() << ".\n";
    valid = false;
  }
}

Member Function Documentation

calculateFTS()

void TrajectoryStateClosestToPoint::calculateFTS

(

)

const

Definition at line 26 of file TrajectoryStateClosestToPoint.cc.

References PerigeeTrajectoryParameters::charge(), PerigeeConversions::curvilinearError(), errorIsAvailable, isValid(), PerigeeConversions::momentumFromPerigee(), PerigeeConversions::positionFromPerigee(), theField, theFTS, theFTSavailable, theParameters, thePerigeeError, thePt, and theRefPoint.

Referenced by theState().

                                                       {
  if (!isValid())
    throw TrajectoryStateException("TrajectoryStateClosestToPoint is invalid and cannot return any parameters");
  GlobalTrajectoryParameters gtp(PerigeeConversions::positionFromPerigee(theParameters, theRefPoint),
                                 PerigeeConversions::momentumFromPerigee(theParameters, thePt, theRefPoint),
                                 theParameters.charge(),
                                 theField);
  if (errorIsAvailable) {
    theFTS = FTS(gtp, PerigeeConversions::curvilinearError(thePerigeeError, gtp));
  } else {
    theFTS = FTS(gtp);
  }
  theFTSavailable = true;
}

charge()

TrackCharge TrajectoryStateClosestToPoint::charge ( void  ) const

inline

Definition at line 94 of file TrajectoryStateClosestToPoint.h.

References PerigeeTrajectoryParameters::charge(), and theParameters.

Referenced by TestOutliers::analyze().

{ return theParameters.charge(); }

hasError()

bool TrajectoryStateClosestToPoint::hasError ( void  ) const

inline

tells whether the error of the perigee parameters is available.

Definition at line 106 of file TrajectoryStateClosestToPoint.h.

References errorIsAvailable.

Referenced by PerigeeLinearizedTrackState::hasError().

{ return errorIsAvailable; }

isValid()

bool TrajectoryStateClosestToPoint::isValid ( void  ) const

inline

Tells whether the state is valid or not

Definition at line 111 of file TrajectoryStateClosestToPoint.h.

References valid.

Referenced by ntupleDataFormat._Object::_checkIsValid(), BPHMonitor::analyze(), L1MuonRecoTreeProducer::analyze(), HLTMuonDimuonL3Filter::applyDiMuonSelection(), calculateFTS(), PerigeeLinearizedTrackState::computeJacobians(), V0Fitter::fitAll(), HLTDiMuonGlbTrkFilter::hltFilter(), HLTMuonTrackMassFilter::hltFilter(), HLTMuonTrimuonL3Filter::hltFilter(), PerigeeLinearizedTrackState::predictedStateWeight(), Onia2MuMuPAT::produce(), MuonUpdatorAtVertex::propagateToNominalLine(), and core.AutoHandle.AutoHandle::ReallyLoad().

{ return valid; }

momentum()

GlobalVector TrajectoryStateClosestToPoint::momentum ( ) const

inline

Definition at line 92 of file TrajectoryStateClosestToPoint.h.

References PerigeeConversions::momentumFromPerigee(), theParameters, thePt, and theRefPoint.

Referenced by DisappearingMuonsSkimming::filter(), V0Fitter::fitAll(), TwoBodyDecayLinearizationPointFinder::getLinearizationPoint(), and MatcherUsingTracksAlgorithm::matchWithPropagation().

{ return PerigeeConversions::momentumFromPerigee(theParameters, thePt, theRefPoint); }

perigeeError()

const PerigeeTrajectoryError& TrajectoryStateClosestToPoint::perigeeError ( ) const

inline

returns the error of the perigee parameters if it is available

Definition at line 84 of file TrajectoryStateClosestToPoint.h.

References thePerigeeError.

Referenced by PrimaryVertexValidation::analyze(), PerigeeRefittedTrackState::covariance(), VertexFitterResult::fill(), PerigeeLinearizedTrackState::predictedStateError(), PerigeeLinearizedTrackState::predictedStateMomentumError(), and PerigeeLinearizedTrackState::predictedStateWeight().

{ return thePerigeeError; }

perigeeParameters()

const PerigeeTrajectoryParameters& TrajectoryStateClosestToPoint::perigeeParameters ( ) const

inline

returns the perigee parameters at the p.c.a. to the reference point.

Definition at line 73 of file TrajectoryStateClosestToPoint.h.

References theParameters.

Referenced by PrimaryVertexValidation::analyze(), PerigeeLinearizedTrackState::computeChargedJacobians(), DisappearingMuonsSkimming::filter(), PerigeeRefittedTrackState::parameters(), PerigeeLinearizedTrackState::predictedStateMomentumParameters(), and PerigeeLinearizedTrackState::predictedStateParameters().

{ return theParameters; }

position()

GlobalPoint TrajectoryStateClosestToPoint::position ( ) const

inline

returns the state defined at the point of closest approach to the reference point.

Definition at line 90 of file TrajectoryStateClosestToPoint.h.

References PerigeeConversions::positionFromPerigee(), theParameters, and theRefPoint.

Referenced by PrimaryVertexValidation::analyze(), L1MuonRecoTreeProducer::analyze(), DisappearingMuonsSkimming::getECALIsolation(), and MatcherUsingTracksAlgorithm::matchWithPropagation().

{ return PerigeeConversions::positionFromPerigee(theParameters, theRefPoint); }

pt()

double TrajectoryStateClosestToPoint::pt ( ) const

inline

returns the transverse momentum magnitude

Definition at line 78 of file TrajectoryStateClosestToPoint.h.

References thePt.

Referenced by Particle.Particle::__str__(), DiObject.DiMuon::__str__(), Photon.Photon::calScaledIsoValueExp(), Photon.Photon::calScaledIsoValueLin(), Photon.Photon::calScaledIsoValueQuadr(), PerigeeLinearizedTrackState::computeChargedJacobians(), Electron.Electron::mvaIDLoose(), Electron.Electron::mvaIDRun2(), Electron.Electron::mvaIDTight(), datamodel.Object::p4(), Electron.Electron::ptErr(), ntupleDataFormat.Track::ptPull(), Lepton.Lepton::relIso(), Lepton.Lepton::relIsoFromEA(), Lepton.Lepton::relIsoR(), and Jet.Jet::setCorrP4().

{ return thePt; }

referencePoint()

const GlobalPoint& TrajectoryStateClosestToPoint::referencePoint ( ) const

inline

returns the reference point which used to construct the state. It is thus the point with respect to which the impact parameters are defined.

Definition at line 67 of file TrajectoryStateClosestToPoint.h.

References theRefPoint.

Referenced by PerigeeRefittedTrackState::position(), and TrajectoryStateClosestToPoint().

{ return theRefPoint; }

theState()

const FreeTrajectoryState& TrajectoryStateClosestToPoint::theState ( ) const

inline

Definition at line 96 of file TrajectoryStateClosestToPoint.h.

References calculateFTS(), theFTS, and theFTSavailable.

Referenced by ValidationMisalignedTracker::analyze(), BPHMonitor::analyze(), TestOutliers::analyze(), PrimaryVertexValidation::analyze(), HLTMuonDimuonL3Filter::applyDiMuonSelection(), pat::LeptonVertexSignificance::calculate(), BPHPlusMinusVertex::computeApp(), PerigeeLinearizedTrackState::computeChargedJacobians(), PerigeeLinearizedTrackState::computeJacobians(), PerigeeLinearizedTrackState::computeNeutralJacobians(), PerigeeRefittedTrackState::freeTrajectoryState(), HLTDiMuonGlbTrkFilter::hltFilter(), HLTMuonTrackMassFilter::hltFilter(), HLTMuonTrimuonL3Filter::hltFilter(), KinematicParticleFactoryFromTransientTrack::particle(), Onia2MuMuPAT::produce(), MuonUpdatorAtVertex::propagateToNominalLine(), TrackClassifier::reconstructionInformation(), and PerigeeRefittedTrackState::trajectoryStateOnSurface().

                                              {
    if (!theFTSavailable)
      calculateFTS();
    return theFTS;
  }

Friends And Related Function Documentation

TrajectoryStateClosestToPointBuilder

friend class TrajectoryStateClosestToPointBuilder

friend

Definition at line 113 of file TrajectoryStateClosestToPoint.h.

Member Data Documentation

errorIsAvailable

bool TrajectoryStateClosestToPoint::errorIsAvailable

private

Definition at line 135 of file TrajectoryStateClosestToPoint.h.

Referenced by calculateFTS(), hasError(), and TrajectoryStateClosestToPoint().

theField

const MagneticField* TrajectoryStateClosestToPoint::theField

private

Definition at line 125 of file TrajectoryStateClosestToPoint.h.

Referenced by calculateFTS(), and TrajectoryStateClosestToPoint().

theFTS

FTS TrajectoryStateClosestToPoint::theFTS

mutableprivate

Definition at line 127 of file TrajectoryStateClosestToPoint.h.

Referenced by calculateFTS(), theState(), and TrajectoryStateClosestToPoint().

theFTSavailable

bool TrajectoryStateClosestToPoint::theFTSavailable

mutableprivate

Definition at line 134 of file TrajectoryStateClosestToPoint.h.

Referenced by calculateFTS(), and theState().

theParameters

PerigeeTrajectoryParameters TrajectoryStateClosestToPoint::theParameters

private

Definition at line 130 of file TrajectoryStateClosestToPoint.h.

Referenced by calculateFTS(), charge(), momentum(), perigeeParameters(), position(), and TrajectoryStateClosestToPoint().

thePerigeeError

PerigeeTrajectoryError TrajectoryStateClosestToPoint::thePerigeeError

private

Definition at line 132 of file TrajectoryStateClosestToPoint.h.

Referenced by calculateFTS(), perigeeError(), and TrajectoryStateClosestToPoint().

thePt

double TrajectoryStateClosestToPoint::thePt

private

Definition at line 131 of file TrajectoryStateClosestToPoint.h.

Referenced by calculateFTS(), momentum(), pt(), and TrajectoryStateClosestToPoint().

theRefPoint

GlobalPoint TrajectoryStateClosestToPoint::theRefPoint

private

Definition at line 129 of file TrajectoryStateClosestToPoint.h.

Referenced by calculateFTS(), momentum(), position(), and referencePoint().

valid

bool TrajectoryStateClosestToPoint::valid

private

Definition at line 133 of file TrajectoryStateClosestToPoint.h.

Referenced by isValid(), and TrajectoryStateClosestToPoint().