KinematicRefittedTrackState Class Reference

#include <KinematicRefittedTrackState.h>

Inheritance diagram for KinematicRefittedTrackState:

Public Types
typedef ReferenceCountingPointer < RefittedTrackState< 6 > >	RefCountedRefittedTrackState
Public Types inherited from RefittedTrackState< 6 >
typedef ROOT::Math::SMatrix < double, N, N, ROOT::Math::MatRepSym< double, N > >	AlgebraicSymMatrixNN
typedef ROOT::Math::SVector < double, N-2 >	AlgebraicVectorM
typedef ROOT::Math::SVector < double, N >	AlgebraicVectorN

Public Member Functions
virtual std::vector < ReferenceCountingPointer < RefittedTrackState< 6 > > >	components () const
AlgebraicSymMatrix66	covariance () const
FreeTrajectoryState	freeTrajectoryState () const
AlgebraicVector4	kinematicMomentumVector () const
AlgebraicVector7	kinematicParameters () const
AlgebraicSymMatrix77	kinematicParametersCovariance () const
	KinematicRefittedTrackState (const KinematicState &st, const AlgebraicVector4 &mv)
AlgebraicVector4	momentumVector () const
AlgebraicVector6	parameters () const
GlobalPoint	position () const
virtual ReferenceCountingPointer < RefittedTrackState< 6 > >	stateWithNewWeight (const double newWeight) const
TrajectoryStateOnSurface	trajectoryStateOnSurface (const Surface &surface) const
TrajectoryStateOnSurface	trajectoryStateOnSurface (const Surface &surface, const Propagator &propagator) const
virtual reco::TransientTrack	transientTrack () const
virtual double	weight () const
Public Member Functions inherited from RefittedTrackState< 6 >
virtual	~RefittedTrackState ()

Private Attributes
AlgebraicVector4	momentumAtVertex
KinematicState	state

Detailed Description

Refitted state for kinematic parameters To be used in KinematicParticleVertxFitter only. Class caches the refitted state of the particle and provide access to its parameters in both parametrizations: Kinemaic and extended Perigee.

Several methods are done just to be consistent with present KalmanVertexFitter structure

Definition at line 22 of file KinematicRefittedTrackState.h.

Member Typedef Documentation

typedef ReferenceCountingPointer<RefittedTrackState<6> > KinematicRefittedTrackState::RefCountedRefittedTrackState

Definition at line 26 of file KinematicRefittedTrackState.h.

Constructor & Destructor Documentation

KinematicRefittedTrackState::KinematicRefittedTrackState	(	const KinematicState &	st,
		const AlgebraicVector4 &	mv
	)

Definition at line 7 of file KinematicRefittedTrackState.cc.

References momentumAtVertex, and state.

{
  state = st;
  momentumAtVertex = mv;
}

Member Function Documentation

std::vector< ReferenceCountingPointer< RefittedTrackState< 6 > > > KinematicRefittedTrackState::components ( ) const

virtual

Implements RefittedTrackState< 6 >.

Definition at line 83 of file KinematicRefittedTrackState.cc.

References query::result.

{
 std::vector<RefCountedRefittedTrackState> result; result.reserve(1);
 result.push_back(RefCountedRefittedTrackState( 
                const_cast<KinematicRefittedTrackState*>(this)));
 return result;
}                          

AlgebraicSymMatrix66 KinematicRefittedTrackState::covariance ( void  ) const

virtual

Kinmatic perigee covariance

Implements RefittedTrackState< 6 >.

Definition at line 20 of file KinematicRefittedTrackState.cc.

{
  throw VertexException("KinematicRefittedTrackState::Fishy covariance called");
  return AlgebraicSymMatrix66();
}

FreeTrajectoryState KinematicRefittedTrackState::freeTrajectoryState ( ) const

virtual

FTS out of kinematic parameters

Implements RefittedTrackState< 6 >.

Definition at line 33 of file KinematicRefittedTrackState.cc.

References KinematicState::freeTrajectoryState(), and state.

Referenced by trajectoryStateOnSurface().

{
 return state.freeTrajectoryState();
}

AlgebraicVector4 KinematicRefittedTrackState::kinematicMomentumVector

(

)

const

Kinematic momentum vector

Definition at line 41 of file KinematicRefittedTrackState.cc.

References KinematicState::globalMomentum(), KinematicState::mass(), state, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by FinalTreeBuilder::buildTree().

{
 GlobalVector mm = state.globalMomentum();
 AlgebraicVector4 mr;
 mr[0] = mm.x();
 mr[1] = mm.y();
 mr[2] = mm.z();
 mr[3] = state.mass();
 return mr;
}

AlgebraicVector7 KinematicRefittedTrackState::kinematicParameters

(

)

const

Access to Kinematic parameters

Definition at line 26 of file KinematicRefittedTrackState.cc.

References KinematicState::kinematicParameters(), state, and KinematicParameters::vector().

Referenced by FinalTreeBuilder::buildTree().

{return state.kinematicParameters().vector();}

AlgebraicSymMatrix77 KinematicRefittedTrackState::kinematicParametersCovariance

(

)

const

Kinmatic covariance

Definition at line 29 of file KinematicRefittedTrackState.cc.

References KinematicState::kinematicParametersError(), KinematicParametersError::matrix(), and state.

Referenced by FinalTreeBuilder::buildTree().

{return state.kinematicParametersError().matrix();}

AlgebraicVector4 KinematicRefittedTrackState::momentumVector ( ) const

virtual

Perigee momentum vector

Implements RefittedTrackState< 6 >.

Definition at line 52 of file KinematicRefittedTrackState.cc.

References momentumAtVertex.

{
 return momentumAtVertex;
}

AlgebraicVector6 KinematicRefittedTrackState::parameters ( void  ) const

virtual

Access to Kinematic perigee parameters

Implements RefittedTrackState< 6 >.

Definition at line 14 of file KinematicRefittedTrackState.cc.

References conv, KinematicPerigeeConversions::extendedPerigeeFromKinematicParameters(), KinematicState::globalPosition(), and state.

{
  KinematicPerigeeConversions conv;
  return conv.extendedPerigeeFromKinematicParameters(state,state.globalPosition()).vector();
}

GlobalPoint KinematicRefittedTrackState::position ( ) const

virtual

Position at which the momentum is defined.

Implements RefittedTrackState< 6 >.

Definition at line 38 of file KinematicRefittedTrackState.cc.

References KinematicState::globalPosition(), and state.

{return state.globalPosition();}

ReferenceCountingPointer< RefittedTrackState< 6 > > KinematicRefittedTrackState::stateWithNewWeight ( const double  newWeight ) const

virtual

Returns a new refitted state of the same type, but with another weight. The current state is unchanged.

Implements RefittedTrackState< 6 >.

Definition at line 76 of file KinematicRefittedTrackState.cc.

References gather_cfg::cout.

{
 std::cout<<"WARNING: Change weight for Kinematic state called, weigt will stay to be equal 1."<<std::endl;
 return RefCountedRefittedTrackState( 
                const_cast<KinematicRefittedTrackState*>(this));
}

TrajectoryStateOnSurface KinematicRefittedTrackState::trajectoryStateOnSurface ( const Surface &  surface ) const

virtual

Transformation into a TSOS at a given surface

Implements RefittedTrackState< 6 >.

Definition at line 58 of file KinematicRefittedTrackState.cc.

References anyDirection, freeTrajectoryState(), KinematicState::magneticField(), AnalyticalPropagator::propagate(), and state.

{
  AnalyticalPropagator thePropagator(state.magneticField(), anyDirection);
 return thePropagator.propagate(freeTrajectoryState(), surface);
}

TrajectoryStateOnSurface KinematicRefittedTrackState::trajectoryStateOnSurface ( const Surface &  surface, const Propagator &  propagator  ) const

virtual

Transformation into a TSOS at a given surface, with a given propagator

Implements RefittedTrackState< 6 >.

Definition at line 64 of file KinematicRefittedTrackState.cc.

References anyDirection, Propagator::clone(), and freeTrajectoryState().

{
 std::auto_ptr<Propagator> thePropagator( propagator.clone());
 thePropagator->setPropagationDirection(anyDirection);
 return thePropagator->propagate(freeTrajectoryState(), surface);
}

reco::TransientTrack KinematicRefittedTrackState::transientTrack ( ) const

virtual

Implements RefittedTrackState< 6 >.

Definition at line 93 of file KinematicRefittedTrackState.cc.

{
  throw VertexException("KinematicRefittedTrackState::Can Not write a TransientTrack");
//  TransientTrackFromFTSFactory factory;
//   return factory.build(freeTrajectoryState());
}

double KinematicRefittedTrackState::weight ( void  ) const

virtual

The weight of this component in a mixture

Implements RefittedTrackState< 6 >.

Definition at line 72 of file KinematicRefittedTrackState.cc.

{ return 1.;}

Member Data Documentation

AlgebraicVector4 KinematicRefittedTrackState::momentumAtVertex

private

Definition at line 85 of file KinematicRefittedTrackState.h.

Referenced by KinematicRefittedTrackState(), and momentumVector().

KinematicState KinematicRefittedTrackState::state

private

Definition at line 84 of file KinematicRefittedTrackState.h.

Referenced by freeTrajectoryState(), kinematicMomentumVector(), kinematicParameters(), kinematicParametersCovariance(), KinematicRefittedTrackState(), parameters(), position(), and trajectoryStateOnSurface().