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MultiTrackKinematicConstraint Class Reference

Pure abstract class implementing constraint application on multiple tracks (back to back, collinearity etc. More...

#include <RecoVertex/KinematicFitPrimitives/interface/MultiTrackKinematicConstraint.h>

Inheritance diagram for MultiTrackKinematicConstraint:

List of all members.

Public Member Functions
virtual MultiTrackKinematicConstraint *	clone () const =0
	MultiTrackKinematicConstraint ()
	Default constructor and destructor.
virtual int	numberOfEquations () const =0
virtual AlgebraicMatrix	parametersDerivative (const vector< KinematicState >, const GlobalPoint &) const =0
virtual AlgebraicMatrix	positionDerivative (const vector< KinematicState >, const GlobalPoint &) const =0
virtual AlgebraicVector	value (const vector< KinematicState >, const GlobalPoint &) const =0
	Methods making vector of values and derivative matrices with respect to vertex position and particle parameters.
virtual	~MultiTrackKinematicConstraint ()

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Detailed Description

Pure abstract class implementing constraint application on multiple tracks (back to back, collinearity etc.

) To be used by KinematicConstraindeVertexFitter only Class caches the information about calculation of of constraint equation derivatives and values at given linearization point. Point should be of 7*n+3 dimensions Where n - number of particles. 7 - parametrization for particles is (x,y,z,p_x,p_y,p_z,m), for vertex (x_v,y_v,z_v) Fitter usually takes current parameters as the first step point and the change it to the result of the first iteration.

Kirill Prokofiev, October 2003

Definition at line 24 of file MultiTrackKinematicConstraint.h.

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Constructor & Destructor Documentation

MultiTrackKinematicConstraint::MultiTrackKinematicConstraint

(

)

[inline]

Default constructor and destructor.

Definition at line 32 of file MultiTrackKinematicConstraint.h.

{}

virtual MultiTrackKinematicConstraint::~MultiTrackKinematicConstraint

(

)

[inline, virtual]

Definition at line 34 of file MultiTrackKinematicConstraint.h.

{}

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Member Function Documentation

virtual MultiTrackKinematicConstraint* MultiTrackKinematicConstraint::clone

(

)

const [pure virtual]

Implemented in TwoTrackMassKinematicConstraint, and VertexKinematicConstraint.

virtual int MultiTrackKinematicConstraint::numberOfEquations

(

)

const [pure virtual]

Implemented in TwoTrackMassKinematicConstraint, and VertexKinematicConstraint.

Referenced by KinematicConstrainedVertexUpdator::update().

virtual AlgebraicMatrix MultiTrackKinematicConstraint::parametersDerivative	(	const vector< KinematicState >	,
		const GlobalPoint &
	)			const [pure virtual]

Implemented in TwoTrackMassKinematicConstraint, and VertexKinematicConstraint.

Referenced by KinematicConstrainedVertexUpdator::update().

virtual AlgebraicMatrix MultiTrackKinematicConstraint::positionDerivative	(	const vector< KinematicState >	,
		const GlobalPoint &
	)			const [pure virtual]

Implemented in TwoTrackMassKinematicConstraint, and VertexKinematicConstraint.

Referenced by KinematicConstrainedVertexUpdator::update().

virtual AlgebraicVector MultiTrackKinematicConstraint::value	(	const vector< KinematicState >	,
		const GlobalPoint &
	)			const [pure virtual]

Methods making vector of values and derivative matrices with respect to vertex position and particle parameters.

Input paramters are put into one vector: (Vertex position, particle_parameters_1,..., particle_parameters_n)

Implemented in TwoTrackMassKinematicConstraint, and VertexKinematicConstraint.

Referenced by KinematicConstrainedVertexFitter::fit(), and KinematicConstrainedVertexUpdator::update().

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The documentation for this class was generated from the following file:

• RecoVertex/KinematicFitPrimitives/interface/MultiTrackKinematicConstraint.h

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