#include <PerigeeLinearizedTrackState.h>

Inheritance diagram for PerigeeLinearizedTrackState:

Public Types
typedef ReferenceCountingPointer < LinearizedTrackState< 5 > >	RefCountedLinearizedTrackState

Public Types inherited from LinearizedTrackState< 5 >
typedef ROOT::Math::SMatrix < double, N-2, 3, ROOT::Math::MatRepStd < double, N-2, 3 > >	AlgebraicMatrixM3

typedef ROOT::Math::SMatrix < double, N, 3, ROOT::Math::MatRepStd < double, N, 3 > >	AlgebraicMatrixN3

typedef ROOT::Math::SMatrix < double, N, N-2, ROOT::Math::MatRepStd< double, N, N-2 > >	AlgebraicMatrixNM

typedef ROOT::Math::SMatrix < double, N-2, N-2, ROOT::Math::MatRepSym< double, N-2 > >	AlgebraicSymMatrixMM

typedef ROOT::Math::SMatrix < double, N, N, ROOT::Math::MatRepSym< double, N > >	AlgebraicSymMatrixNN

typedef ROOT::Math::SMatrix < double, N+1, N+1, ROOT::Math::MatRepSym< double, N+1 > >	AlgebraicSymMatrixOO

typedef ROOT::Math::SVector < double, N-2 >	AlgebraicVectorM

typedef ROOT::Math::SVector < double, N >	AlgebraicVectorN

typedef ReferenceCountingPointer < RefittedTrackState< N > >	RefCountedRefittedTrackState

Public Member Functions
TrackCharge	charge () const

virtual void	checkParameters (AlgebraicVector5 &parameters) const

virtual std::vector < ReferenceCountingPointer < LinearizedTrackState< 5 > > >	components () const

const AlgebraicVector5 &	constantTerm () const

virtual RefCountedRefittedTrackState	createRefittedTrackState (const GlobalPoint &vertexPosition, const AlgebraicVector3 &vectorParameters, const AlgebraicSymMatrix66 &covarianceMatrix) const

bool	hasError () const

virtual bool	isValid () const

const GlobalPoint &	linearizationPoint () const

const AlgebraicMatrix53 &	momentumJacobian () const

bool	operator== (LinearizedTrackState< 5 > &other) const

bool	operator== (ReferenceCountingPointer< LinearizedTrackState< 5 > > &other) const

const AlgebraicVector5 &	parametersFromExpansion () const

const AlgebraicMatrix53 &	positionJacobian () const

const TrajectoryStateClosestToPoint &	predictedState () const

AlgebraicSymMatrix55	predictedStateError () const

AlgebraicSymMatrix33	predictedStateMomentumError () const

virtual AlgebraicVector3	predictedStateMomentumParameters () const

AlgebraicVector5	predictedStateParameters () const

AlgebraicSymMatrix55	predictedStateWeight (int &error) const

virtual AlgebraicVector5	refittedParamFromEquation (const RefCountedRefittedTrackState &theRefittedState) const

const TrajectoryStateOnSurface	state () const

virtual RefCountedLinearizedTrackState	stateWithNewLinearizationPoint (const GlobalPoint &newLP) const

virtual reco::TransientTrack	track () const

virtual double	weightInMixture () const

Public Member Functions inherited from LinearizedTrackState< 5 >
virtual void	checkParameters (AlgebraicVectorN &parameters) const

virtual RefCountedRefittedTrackState	createRefittedTrackState (const GlobalPoint &vertexPosition, const AlgebraicVectorM &vectorParameters, const AlgebraicSymMatrixOO &covarianceMatrix) const =0

virtual bool	operator== (LinearizedTrackState< N > &other) const =0

virtual	~LinearizedTrackState ()

Private Member Functions
void	compute3DImpactPoint () const

void	computeChargedJacobians () const

void	computeJacobians () const

void	computeNeutralJacobians () const

	PerigeeLinearizedTrackState (const GlobalPoint &linP, const reco::TransientTrack &track, const TrajectoryStateOnSurface &tsos)

Friends
class	LinearizedTrackStateFactory

Detailed Description

Calculates and stores the ImpactPointMeasurement of the impact point (point of closest approach in 3D) to the given linearization point. (see V.Karimaki, HIP-1997-77 / EXP)

Computes the parameters of the trajectory state at the transverse point of closest approach (in the global transverse plane) to the linearization point, and the jacobiam matrices. (see R.Fruehwirth et al. Data Analysis Techniques in HEP Experiments Second Edition, Cambridge University Press 2000, or R.Fruehwirth et al. Vertex reconstruction and track bundling at the LEP collider using robust algorithms. Computer Physics Communications 96 (1996) 189-208).

Both are done `on-demand' to improve CPU performance.

This particular implementation works with "perigee" helix parametrization: see Billoir et al. NIM in PR A311(1992) 139-150

Definition at line 35 of file PerigeeLinearizedTrackState.h.

Member Typedef Documentation

typedef ReferenceCountingPointer<LinearizedTrackState<5> > PerigeeLinearizedTrackState::RefCountedLinearizedTrackState

Definition at line 44 of file PerigeeLinearizedTrackState.h.

Constructor & Destructor Documentation

PerigeeLinearizedTrackState::PerigeeLinearizedTrackState	(	const GlobalPoint &	linP,
		const reco::TransientTrack &	track,
		const TrajectoryStateOnSurface &	tsos
	)

inlineprivate

Constructor with the linearization point and the track. Private, can only be used by LinearizedTrackFactory.

Definition at line 151 of file PerigeeLinearizedTrackState.h.

Member Function Documentation

TrackCharge PerigeeLinearizedTrackState::charge ( void ) const

inlinevirtual

Method returning the impact point measurement

Private Attributes
TSCPBuilderNoMaterial	builder

bool	jacobiansAvailable

TrackCharge	theCharge

AlgebraicVector5	theConstantTerm

AlgebraicVector5	theExpandedParams

GlobalPoint	theLinPoint

AlgebraicMatrix53	theMomentumJacobian

AlgebraicMatrix53	thePositionJacobian

TrajectoryStateClosestToPoint	thePredState

reco::TransientTrack	theTrack

const TrajectoryStateOnSurface	theTSOS

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Friends

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation