LinearizedTrackState< N > Class Template Reference

#include <LinearizedTrackState.h>

Inheritance diagram for LinearizedTrackState< N >:

Public Types
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
virtual TrackCharge	charge () const =0
virtual void	checkParameters (AlgebraicVectorN &parameters) const
virtual std::vector < ReferenceCountingPointer < LinearizedTrackState< N > > >	components () const =0
virtual const AlgebraicVectorN &	constantTerm () const =0
virtual RefCountedRefittedTrackState	createRefittedTrackState (const GlobalPoint &vertexPosition, const AlgebraicVectorM &vectorParameters, const AlgebraicSymMatrixOO &covarianceMatrix) const =0
virtual bool	hasError () const =0
virtual bool	isValid () const
virtual const GlobalPoint &	linearizationPoint () const =0
virtual const AlgebraicMatrixNM &	momentumJacobian () const =0
virtual bool	operator== (LinearizedTrackState< N > &other) const =0
virtual const AlgebraicVectorN &	parametersFromExpansion () const =0
virtual const AlgebraicMatrixN3 &	positionJacobian () const =0
virtual AlgebraicSymMatrixNN	predictedStateError () const =0
virtual AlgebraicSymMatrixMM	predictedStateMomentumError () const =0
virtual AlgebraicVectorM	predictedStateMomentumParameters () const =0
virtual AlgebraicVectorN	predictedStateParameters () const =0
virtual AlgebraicSymMatrixNN	predictedStateWeight (int &error) const =0
virtual AlgebraicVectorN	refittedParamFromEquation (const RefCountedRefittedTrackState &theRefittedState) const =0
virtual ReferenceCountingPointer < LinearizedTrackState< N > >	stateWithNewLinearizationPoint (const GlobalPoint &newLP) const =0
virtual reco::TransientTrack	track () const =0
virtual double	weightInMixture () const =0
virtual	~LinearizedTrackState ()

Detailed Description

template<unsigned int N>
class LinearizedTrackState< N >

Abstract base class for all kind of linearizedtrack like objects. 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 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).

Definition at line 38 of file LinearizedTrackState.h.

Member Typedef Documentation

template<unsigned int N>

typedef ROOT::Math::SMatrix<double,N-2,3,ROOT::Math::MatRepStd<double,N-2,3> > LinearizedTrackState< N >::AlgebraicMatrixM3

Definition at line 46 of file LinearizedTrackState.h.

template<unsigned int N>

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

Definition at line 44 of file LinearizedTrackState.h.

template<unsigned int N>

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

Definition at line 45 of file LinearizedTrackState.h.

template<unsigned int N>

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

Definition at line 48 of file LinearizedTrackState.h.

template<unsigned int N>

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

Definition at line 47 of file LinearizedTrackState.h.

template<unsigned int N>

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

Definition at line 49 of file LinearizedTrackState.h.

template<unsigned int N>

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

Definition at line 43 of file LinearizedTrackState.h.

template<unsigned int N>

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

Definition at line 42 of file LinearizedTrackState.h.

template<unsigned int N>

typedef ReferenceCountingPointer<RefittedTrackState<N> > LinearizedTrackState< N >::RefCountedRefittedTrackState

Definition at line 51 of file LinearizedTrackState.h.

Constructor & Destructor Documentation

template<unsigned int N>

virtual LinearizedTrackState< N >::~LinearizedTrackState ( )

inlinevirtual

Definition at line 53 of file LinearizedTrackState.h.

{}

Member Function Documentation

template<unsigned int N>

virtual TrackCharge LinearizedTrackState< N >::charge ( ) const

pure virtual

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual void LinearizedTrackState< N >::checkParameters ( AlgebraicVectorN &  parameters ) const

inlinevirtual

Reimplemented in ParticleKinematicLinearizedTrackState.

Definition at line 135 of file LinearizedTrackState.h.

    {}

template<unsigned int N>

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

pure virtual

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual const AlgebraicVectorN& LinearizedTrackState< N >::constantTerm ( ) const

pure virtual

Method returning the constant term of the Taylor expansion of the measurement equation

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual RefCountedRefittedTrackState LinearizedTrackState< N >::createRefittedTrackState ( const GlobalPoint &  vertexPosition, const AlgebraicVectorM &  vectorParameters, const AlgebraicSymMatrixOO &  covarianceMatrix  ) const

pure virtual

Creates the correct refitted state according to the results of the track refit.

Implemented in PerigeeMultiLTS.

template<unsigned int N>

virtual bool LinearizedTrackState< N >::hasError ( ) const

pure virtual

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual bool LinearizedTrackState< N >::isValid ( void  ) const

inlinevirtual

Reimplemented in PerigeeLinearizedTrackState.

Definition at line 145 of file LinearizedTrackState.h.

{ return true; }

template<unsigned int N>

virtual const GlobalPoint& LinearizedTrackState< N >::linearizationPoint ( ) const

pure virtual

Access methods

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual const AlgebraicMatrixNM& LinearizedTrackState< N >::momentumJacobian ( ) const

pure virtual

Method returning the Momentum Jacobian from the Taylor expansion (Matrix B)

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

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

pure virtual

Method returning the impact point measurement

template<unsigned int N>

virtual const AlgebraicVectorN& LinearizedTrackState< N >::parametersFromExpansion ( ) const

pure virtual

Method returning the parameters of the Taylor expansion

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual const AlgebraicMatrixN3& LinearizedTrackState< N >::positionJacobian ( ) const

pure virtual

Method returning the Position Jacobian from the Taylor expansion (Matrix A)

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual AlgebraicSymMatrixNN LinearizedTrackState< N >::predictedStateError ( ) const

pure virtual

Method returning the covariance matrix of the track state at the linearization point.

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual AlgebraicSymMatrixMM LinearizedTrackState< N >::predictedStateMomentumError ( ) const

pure virtual

Method returning the momentum covariance matrix of the track state at the transverse impact point.

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual AlgebraicVectorM LinearizedTrackState< N >::predictedStateMomentumParameters ( ) const

pure virtual

Method returning the momentum part of the parameters of the track state at the linearization point.

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual AlgebraicVectorN LinearizedTrackState< N >::predictedStateParameters ( ) const

pure virtual

Method returning the parameters of the track state at the linearization point.

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual AlgebraicSymMatrixNN LinearizedTrackState< N >::predictedStateWeight ( int &  error ) const

pure virtual

Method returning the weight matrix of the track state at the linearization point. The error variable is 0 in case of success.

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual AlgebraicVectorN LinearizedTrackState< N >::refittedParamFromEquation ( const RefCountedRefittedTrackState &  theRefittedState ) const

pure virtual

Method returning the parameters of the Taylor expansion evaluated with the refitted state.

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual ReferenceCountingPointer<LinearizedTrackState<N> > LinearizedTrackState< N >::stateWithNewLinearizationPoint ( const GlobalPoint &  newLP ) const

pure virtual

Returns a new linearized state with respect to a new linearization point. A new object of the same type is returned, without change to the existing one.

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.

template<unsigned int N>

virtual reco::TransientTrack LinearizedTrackState< N >::track ( ) const

pure virtual

Implemented in ParticleKinematicLinearizedTrackState, PerigeeLinearizedTrackState, and PerigeeMultiLTS.

template<unsigned int N>

virtual double LinearizedTrackState< N >::weightInMixture ( ) const

pure virtual

Implemented in PerigeeLinearizedTrackState, PerigeeMultiLTS, and ParticleKinematicLinearizedTrackState.