KinematicState Class Reference

#include <KinematicState.h>

Public Member Functions
FreeTrajectoryState	freeTrajectoryState () const
GlobalVector	globalMomentum () const
GlobalPoint	globalPosition () const
bool	isValid () const
KinematicParameters const &	kinematicParameters () const
KinematicParametersError const &	kinematicParametersError () const
	KinematicState ()
	KinematicState (const KinematicParameters &parameters, const KinematicParametersError &error, const TrackCharge &charge, const MagneticField *field)
	KinematicState (const FreeTrajectoryState &state, const ParticleMass &mass, float m_sigma)
const MagneticField *	magneticField () const
GlobalVector	magneticFieldInInverseGeV (const GlobalPoint &x) const
GlobalVector	magneticFieldInInverseGeV () const
ParticleMass	mass () const
bool	operator== (const KinematicState &other) const
TrackCharge	particleCharge () const
GlobalTrajectoryParameters const &	trajectoryParameters () const

Private Attributes
KinematicParametersError	err
FreeTrajectoryState	fts
KinematicParameters	param
bool	vl

Detailed Description

Class providing a state of particle needed for Kinematic Fit.

Kirill Prokofiev, March 2003

Definition at line 17 of file KinematicState.h.

Constructor & Destructor Documentation

KinematicState() [1/3]

KinematicState::KinematicState ( )

inline

Default constructor for internal KinematicFitPrimitives library needs only

Definition at line 24 of file KinematicState.h.

References vl.

{ vl = false; }

KinematicState() [2/3]

KinematicState::KinematicState	(	const KinematicParameters &	parameters,
		const KinematicParametersError &	error,
		const TrackCharge &	charge,
		const MagneticField *	field
	)

Constructor taking directly KinematicParameters KinematicError and Charge. To be used with proper KinematicStateBuilder.

Definition at line 4 of file KinematicState.cc.

    : fts(GlobalTrajectoryParameters(parameters.position(), parameters.momentum(), charge, field),
          CartesianTrajectoryError(error.matrix().Sub<AlgebraicSymMatrix66>(0, 0))),
      param(parameters),
      err(error),
      vl(true) {}

KinematicState() [3/3]

KinematicState::KinematicState ( const FreeTrajectoryState &  state, const ParticleMass &  mass, float  m_sigma  )

inline

Definition at line 37 of file KinematicState.h.

      : fts(state),
        param(state.position().x(),
              state.position().y(),
              state.position().z(),
              state.momentum().x(),
              state.momentum().y(),
              state.momentum().z(),
              mass),
        err(state.cartesianError(), m_sigma),
        vl(true) {}

Member Function Documentation

freeTrajectoryState()

FreeTrajectoryState KinematicState::freeTrajectoryState ( ) const

inline

KinematicState -> FreeTrajectoryState converter

Definition at line 77 of file KinematicState.h.

References fts.

Referenced by KinematicRefittedTrackState::freeTrajectoryState().

{ return fts; }

globalMomentum()

GlobalVector KinematicState::globalMomentum ( ) const

inline

Definition at line 67 of file KinematicState.h.

References fts, and FreeTrajectoryState::momentum().

Referenced by ParticleKinematicLinearizedTrackState::computeChargedJacobians(), ParticleKinematicLinearizedTrackState::computeNeutralJacobians(), BPHKinematicFit::fitMomentum(), and KinematicRefittedTrackState::kinematicMomentumVector().

{ return fts.momentum(); }

globalPosition()

GlobalPoint KinematicState::globalPosition ( ) const

inline

Definition at line 69 of file KinematicState.h.

References fts, and FreeTrajectoryState::position().

Referenced by ParticleKinematicLinearizedTrackState::computeChargedJacobians(), ParticleKinematicLinearizedTrackState::computeNeutralJacobians(), KinematicRefittedTrackState::parameters(), and KinematicRefittedTrackState::position().

{ return fts.position(); }

isValid()

bool KinematicState::isValid ( void  ) const

inline

Definition at line 79 of file KinematicState.h.

References vl.

Referenced by ntupleDataFormat._Object::_checkIsValid(), BPHKinematicFit::mass(), core.AutoHandle.AutoHandle::ReallyLoad(), and KinematicStatePropagator::willPropagateToTheTransversePCA().

{ return vl; }

kinematicParameters()

KinematicParameters const& KinematicState::kinematicParameters ( ) const

inline

Access methods to parameters and private data

Definition at line 61 of file KinematicState.h.

References param.

Referenced by KinematicRefittedTrackState::kinematicParameters(), operator==(), VirtualKinematicParticle::stateAtPoint(), and BPHWriteSpecificDecay::write().

{ return param; }

kinematicParametersError()

KinematicParametersError const& KinematicState::kinematicParametersError ( ) const

inline

Definition at line 63 of file KinematicState.h.

References err.

Referenced by KinematicRefittedTrackState::kinematicParametersCovariance(), and operator==().

{ return err; }

magneticField()

const MagneticField* KinematicState::magneticField ( ) const

inline

Definition at line 86 of file KinematicState.h.

References GlobalTrajectoryParameters::magneticField(), and trajectoryParameters().

Referenced by KinematicRefittedTrackState::trajectoryStateOnSurface(), TransientTrackKinematicParticle::TransientTrackKinematicParticle(), and VirtualKinematicParticle::VirtualKinematicParticle().

{ return &trajectoryParameters().magneticField(); }

magneticFieldInInverseGeV() [1/2]

GlobalVector KinematicState::magneticFieldInInverseGeV ( const GlobalPoint &  x ) const

inline

Definition at line 81 of file KinematicState.h.

References GlobalTrajectoryParameters::magneticFieldInInverseGeV(), trajectoryParameters(), and x.

                                                                     {
    return trajectoryParameters().magneticFieldInInverseGeV(x);
  }

magneticFieldInInverseGeV() [2/2]

GlobalVector KinematicState::magneticFieldInInverseGeV ( ) const

inline

Definition at line 84 of file KinematicState.h.

References GlobalTrajectoryParameters::magneticFieldInInverseGeV(), and trajectoryParameters().

{ return trajectoryParameters().magneticFieldInInverseGeV(); }

mass()

ParticleMass KinematicState::mass ( ) const

inline

The mass of the particle

Definition at line 54 of file KinematicState.h.

References param, and KinematicParameters::vector().

Referenced by Particle.Particle::__str__(), DiObject.DiMuon::__str__(), BPHKinematicFit::fitMomentum(), KinematicRefittedTrackState::kinematicMomentumVector(), BPHKinematicFit::mass(), datamodel.Object::p4(), and BPHWriteSpecificDecay::write().

{ return param.vector()[6]; }

operator==()

bool KinematicState::operator==

(

const KinematicState &

other

)

const

Definition at line 14 of file KinematicState.cc.

References kinematicParameters(), kinematicParametersError(), KinematicParametersError::matrix(), trackingPlots::other, and trackerHitRTTI::vector.

                                                                 {
  return (kinematicParameters().vector() == other.kinematicParameters().vector()) &&
         (kinematicParametersError().matrix() == other.kinematicParametersError().matrix());
}

particleCharge()

TrackCharge KinematicState::particleCharge ( ) const

inline

Definition at line 71 of file KinematicState.h.

References FreeTrajectoryState::charge(), and fts.

{ return fts.charge(); }

trajectoryParameters()

GlobalTrajectoryParameters const& KinematicState::trajectoryParameters ( ) const

inline

Definition at line 65 of file KinematicState.h.

References fts, and FreeTrajectoryState::parameters().

Referenced by magneticField(), and magneticFieldInInverseGeV().

{ return fts.parameters(); }

Member Data Documentation

err

KinematicParametersError KinematicState::err

private

Definition at line 91 of file KinematicState.h.

Referenced by kinematicParametersError().

fts

FreeTrajectoryState KinematicState::fts

private

Definition at line 89 of file KinematicState.h.

Referenced by freeTrajectoryState(), globalMomentum(), globalPosition(), particleCharge(), and trajectoryParameters().

param

KinematicParameters KinematicState::param

private

Definition at line 90 of file KinematicState.h.

Referenced by kinematicParameters(), and mass().

vl

bool KinematicState::vl

private

Definition at line 93 of file KinematicState.h.

Referenced by isValid(), and KinematicState().