KinematicConstrainedVertexFitterT< nTrk, nConstraint > Class Template Reference

#include <KinematicConstrainedVertexFitterT.h>

Public Member Functions
RefCountedKinematicTree	fit (const std::vector< RefCountedKinematicParticle > &part)
RefCountedKinematicTree	fit (const std::vector< RefCountedKinematicParticle > &part, MultiTrackKinematicConstraintT< nTrk, nConstraint > *cs)
RefCountedKinematicTree	fit (const std::vector< RefCountedKinematicParticle > &part, MultiTrackKinematicConstraintT< nTrk, nConstraint > *cs, GlobalPoint *pt)
float	getCSum () const
int	getNit () const
	KinematicConstrainedVertexFitterT (const MagneticField *ifield)
	KinematicConstrainedVertexFitterT (const MagneticField *ifield, const LinearizationPointFinder &fnd)
void	setParameters (const edm::ParameterSet &pSet)
	~KinematicConstrainedVertexFitterT ()

Private Member Functions
void	defaultParameters ()

Private Attributes
float	csum
const MagneticField *	field
LinearizationPointFinder *	finder
int	iterations
ConstrainedTreeBuilderT *	tBuilder
float	theMaxDelta
float	theMaxReducedChiSq
int	theMaxStep
float	theMinChiSqImprovement
KinematicConstrainedVertexUpdatorT < nTrk, nConstraint > *	updator
VertexKinematicConstraintT *	vCons

Detailed Description

template<int nTrk, int nConstraint>
class KinematicConstrainedVertexFitterT< nTrk, nConstraint >

Class fitting the veretx out of set of tracks via usual LMS with Lagrange multipliers. Additional constraints can be applyed to the tracks during the vertex fit (solves non-factorizabele cases). Since the vertex constraint is included by default, do not add a separate VertexKinematicConstraint! Example: Vertex fit with collinear tracks..

Definition at line 24 of file KinematicConstrainedVertexFitterT.h.

Constructor & Destructor Documentation

template<int nTrk, int nConstraint>

KinematicConstrainedVertexFitterT< nTrk, nConstraint >::KinematicConstrainedVertexFitterT ( const MagneticField *  ifield )

explicit

Default constructor using LMSLinearizationPointFinder

Definition at line 104 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

KinematicConstrainedVertexFitterT< nTrk, nConstraint >::KinematicConstrainedVertexFitterT	(	const MagneticField *	ifield,
		const LinearizationPointFinder &	fnd
	)

Constructor with user-provided LinearizationPointFinder

Definition at line 117 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

KinematicConstrainedVertexFitterT< nTrk, nConstraint >::~KinematicConstrainedVertexFitterT

(

)

Definition at line 130 of file KinematicConstrainedVertexFitterT.h.

Member Function Documentation

template<int nTrk, int nConstraint>

void KinematicConstrainedVertexFitterT< nTrk, nConstraint >::defaultParameters ( )

private

Definition at line 148 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

RefCountedKinematicTree KinematicConstrainedVertexFitterT< nTrk, nConstraint >::fit ( const std::vector< RefCountedKinematicParticle > &  part )

inline

Without additional constraint, this will perform a simple vertex fit using LMS with Lagrange multipliers method (by definition valid only if nConstraint=0)

Definition at line 51 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

RefCountedKinematicTree KinematicConstrainedVertexFitterT< nTrk, nConstraint >::fit ( const std::vector< RefCountedKinematicParticle > &  part, MultiTrackKinematicConstraintT< nTrk, nConstraint > *  cs  )

inline

LMS with Lagrange multipliers fit of vertex constraint and user-specified constraint.

Definition at line 58 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

RefCountedKinematicTree KinematicConstrainedVertexFitterT< nTrk, nConstraint >::fit	(	const std::vector< RefCountedKinematicParticle > &	part,
		MultiTrackKinematicConstraintT< nTrk, nConstraint > *	cs,
		GlobalPoint *	pt
	)

LMS with Lagrange multipliers fit of vertex constraint, user-specified constraint and user-specified starting point.

Definition at line 159 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

float KinematicConstrainedVertexFitterT< nTrk, nConstraint >::getCSum

(

)

const

Definition at line 295 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

int KinematicConstrainedVertexFitterT< nTrk, nConstraint >::getNit

(

)

const

Definition at line 290 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

void KinematicConstrainedVertexFitterT< nTrk, nConstraint >::setParameters

(

const edm::ParameterSet &

pSet

)

Configuration through PSet: number of iterations(maxDistance) and stopping condition (maxNbrOfIterations)

Definition at line 139 of file KinematicConstrainedVertexFitterT.h.

Member Data Documentation

template<int nTrk, int nConstraint>

float KinematicConstrainedVertexFitterT< nTrk, nConstraint >::csum

private

Definition at line 92 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

const MagneticField* KinematicConstrainedVertexFitterT< nTrk, nConstraint >::field

private

Definition at line 79 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

LinearizationPointFinder* KinematicConstrainedVertexFitterT< nTrk, nConstraint >::finder

private

Definition at line 80 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

int KinematicConstrainedVertexFitterT< nTrk, nConstraint >::iterations

private

Definition at line 91 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

ConstrainedTreeBuilderT* KinematicConstrainedVertexFitterT< nTrk, nConstraint >::tBuilder

private

Definition at line 83 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

float KinematicConstrainedVertexFitterT< nTrk, nConstraint >::theMaxDelta

private

Definition at line 85 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

float KinematicConstrainedVertexFitterT< nTrk, nConstraint >::theMaxReducedChiSq

private

Definition at line 87 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

int KinematicConstrainedVertexFitterT< nTrk, nConstraint >::theMaxStep

private

Definition at line 86 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

float KinematicConstrainedVertexFitterT< nTrk, nConstraint >::theMinChiSqImprovement

private

Definition at line 88 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

KinematicConstrainedVertexUpdatorT<nTrk,nConstraint>* KinematicConstrainedVertexFitterT< nTrk, nConstraint >::updator

private

Definition at line 81 of file KinematicConstrainedVertexFitterT.h.

template<int nTrk, int nConstraint>

VertexKinematicConstraintT* KinematicConstrainedVertexFitterT< nTrk, nConstraint >::vCons

private

Definition at line 82 of file KinematicConstrainedVertexFitterT.h.