KalmanSmoothedVertexChi2Estimator< N > Class Template Reference

#include <KalmanSmoothedVertexChi2Estimator.h>

Inheritance diagram for KalmanSmoothedVertexChi2Estimator< N >:

Public Types
typedef std::pair< bool, double >	BDpair
Public Types inherited from VertexSmoothedChiSquaredEstimator< N >
typedef std::pair< bool, double >	BDpair
typedef CachingVertex< N >::RefCountedVertexTrack	RefCountedVertexTrack

Public Member Functions
KalmanSmoothedVertexChi2Estimator *	clone () const override
BDpair	estimate (const CachingVertex< N > &vertex) const override
	~KalmanSmoothedVertexChi2Estimator () override
Public Member Functions inherited from VertexSmoothedChiSquaredEstimator< N >
	VertexSmoothedChiSquaredEstimator ()
virtual	~VertexSmoothedChiSquaredEstimator ()

Private Attributes
KVFHelper< N >	helper

Detailed Description

template<unsigned int N>
class KalmanSmoothedVertexChi2Estimator< N >

Class to calculate the smoothed chi**2 of the vertex using the Kalman filter algorithms after the vertex has been fit and the tracks refit.

Definition at line 14 of file KalmanSmoothedVertexChi2Estimator.h.

Member Typedef Documentation

BDpair

template<unsigned int N>

typedef std::pair<bool, double> KalmanSmoothedVertexChi2Estimator< N >::BDpair

Definition at line 16 of file KalmanSmoothedVertexChi2Estimator.h.

Constructor & Destructor Documentation

~KalmanSmoothedVertexChi2Estimator()

template<unsigned int N>

KalmanSmoothedVertexChi2Estimator< N >::~KalmanSmoothedVertexChi2Estimator ( )

inlineoverride

Definition at line 18 of file KalmanSmoothedVertexChi2Estimator.h.

{}

Member Function Documentation

clone()

template<unsigned int N>

KalmanSmoothedVertexChi2Estimator* KalmanSmoothedVertexChi2Estimator< N >::clone ( void  ) const

inlineoverridevirtual

Implements VertexSmoothedChiSquaredEstimator< N >.

Definition at line 27 of file KalmanSmoothedVertexChi2Estimator.h.

{ return new KalmanSmoothedVertexChi2Estimator(*this); }

estimate()

template<unsigned int N>

KalmanSmoothedVertexChi2Estimator< N >::BDpair KalmanSmoothedVertexChi2Estimator< N >::estimate ( const CachingVertex< N > &  vertex ) const

overridevirtual

Methode which calculates the smoothed vertex chi**2.

Parameters

vertex

is the final estimate of the vertex, with the refited tracks

Returns

the smoothed vertex chi**2

Implements VertexSmoothedChiSquaredEstimator< N >.

Definition at line 5 of file KalmanSmoothedVertexChi2Estimator.cc.

                                          {
  //initial vertex part
  float v_part = 0.;
  float returnChi = 0.;
 
  if (vertex.hasPrior()) {
    v_part = helper.vertexChi2(vertex.priorVertexState(), vertex.vertexState());
  }
 
  //vector of tracks part
  typedef typename CachingVertex<N>::RefCountedVertexTrack RefCountedVertexTrack;
  std::vector<RefCountedVertexTrack> tracks = vertex.tracks();
  float sum = 0.;
  bool success = true;
  for (typename std::vector<RefCountedVertexTrack>::iterator i = tracks.begin(); i != tracks.end(); i++) {
    BDpair result = helper.trackParameterChi2((*i)->linearizedTrack(), (*i)->refittedState());
    success = success && result.first;
    sum += (*i)->weight() * result.second;
  }
  returnChi = v_part + sum;
  return BDpair(success, returnChi);
}

Member Data Documentation

helper

template<unsigned int N>

KVFHelper<N> KalmanSmoothedVertexChi2Estimator< N >::helper

private

Definition at line 30 of file KalmanSmoothedVertexChi2Estimator.h.