PointingKinematicConstraint Class Reference

#include <PointingKinematicConstraint.h>

Inheritance diagram for PointingKinematicConstraint:

Public Member Functions
virtual PointingKinematicConstraint *	clone () const
virtual std::pair < AlgebraicMatrix, AlgebraicVector >	derivative (const AlgebraicVector &exPoint) const
virtual std::pair < AlgebraicMatrix, AlgebraicVector >	derivative (const std::vector< RefCountedKinematicParticle > &par) const
virtual AlgebraicVector	deviations (int nStates) const
virtual int	numberOfEquations () const
	PointingKinematicConstraint (const GlobalPoint &ref)
virtual std::pair < AlgebraicVector, AlgebraicVector >	value (const AlgebraicVector &exPoint) const
virtual std::pair < AlgebraicVector, AlgebraicVector >	value (const std::vector< RefCountedKinematicParticle > &par) const
Public Member Functions inherited from KinematicConstraint
	KinematicConstraint ()
virtual	~KinematicConstraint ()

Private Member Functions
std::pair< AlgebraicMatrix, AlgebraicVector >	makeDerivative (const AlgebraicVector &exPoint) const
std::pair< AlgebraicVector, AlgebraicVector >	makeValue (const AlgebraicVector &exPoint) const

Private Attributes
GlobalPoint	refPoint

Detailed Description

Topological constraint making a momentum vector to point to the given location in space. Example: if b-meson momentum is reconstructed at b-meson decay position (secondary vertex), making reconstructed momentum pointing the the primary vertex

Multiple track refit is not supported in current version

Kirill Prokofiev, March 2004 MultiState version: July 2004

Definition at line 21 of file PointingKinematicConstraint.h.

Constructor & Destructor Documentation

PointingKinematicConstraint::PointingKinematicConstraint ( const GlobalPoint &  ref )

inline

Definition at line 25 of file PointingKinematicConstraint.h.

Referenced by clone().

                                                     :refPoint(ref)
  {}

Member Function Documentation

virtual PointingKinematicConstraint* PointingKinematicConstraint::clone ( ) const

inlinevirtual

Clone method

Implements KinematicConstraint.

Definition at line 53 of file PointingKinematicConstraint.h.

References PointingKinematicConstraint().

 {return new PointingKinematicConstraint(*this);}

std::pair< AlgebraicMatrix, AlgebraicVector > PointingKinematicConstraint::derivative ( const AlgebraicVector &  exPoint ) const

virtual

Implements KinematicConstraint.

Definition at line 24 of file PointingKinematicConstraint.cc.

std::pair< AlgebraicMatrix, AlgebraicVector > PointingKinematicConstraint::derivative ( const std::vector< RefCountedKinematicParticle > &  par ) const

virtual

Vector of values and matrix of derivatives calculated using current state parameters as expansion point

Implements KinematicConstraint.

Definition at line 42 of file PointingKinematicConstraint.cc.

AlgebraicVector PointingKinematicConstraint::deviations ( int  nStates ) const

virtual

Returns vector of sigma squared associated to the KinematicParameters of refitted particles Initial deviations are given by user for the constraining parameters (mass, momentum components etc). In case of multiple states exactly the same values are added to every particle parameters

Implements KinematicConstraint.

Definition at line 174 of file PointingKinematicConstraint.cc.

std::pair< AlgebraicMatrix, AlgebraicVector > PointingKinematicConstraint::makeDerivative ( const AlgebraicVector &  exPoint ) const

private

Definition at line 106 of file PointingKinematicConstraint.cc.

std::pair< AlgebraicVector, AlgebraicVector > PointingKinematicConstraint::makeValue ( const AlgebraicVector &  exPoint ) const

private

Definition at line 69 of file PointingKinematicConstraint.cc.

int PointingKinematicConstraint::numberOfEquations ( ) const

virtual

Returns number of constraint equations used for fitting. Method is relevant for proper NDF calculations.

Implements KinematicConstraint.

Definition at line 177 of file PointingKinematicConstraint.cc.

std::pair< AlgebraicVector, AlgebraicVector > PointingKinematicConstraint::value ( const AlgebraicVector &  exPoint ) const

virtual

Vector of values and matrix of derivatives calculated at given expansion 7xNumberOfStates point

Implements KinematicConstraint.

Definition at line 4 of file PointingKinematicConstraint.cc.

std::pair< AlgebraicVector, AlgebraicVector > PointingKinematicConstraint::value ( const std::vector< RefCountedKinematicParticle > &  par ) const

virtual

Methods making value and derivative matrix using current state parameters as expansion 7-point. Constraint can be made equaly for single and multiple states

Implements KinematicConstraint.

Definition at line 57 of file PointingKinematicConstraint.cc.

Member Data Documentation

GlobalPoint PointingKinematicConstraint::refPoint

private

Definition at line 61 of file PointingKinematicConstraint.h.