GsfVertexFitter Class Reference

#include <GsfVertexFitter.h>

Inheritance diagram for GsfVertexFitter:

Public Types
typedef CachingVertex< 5 >::RefCountedVertexTrack	RefCountedVertexTrack

Public Member Functions
GsfVertexFitter *	clone () const override
	GsfVertexFitter (const edm::ParameterSet &pSet, const LinearizationPointFinder &linP=DefaultLinearizationPointFinder())
	GsfVertexFitter (const GsfVertexFitter &original)
CachingVertex< 5 >	vertex (const std::vector< reco::TransientTrack > &tracks) const override
CachingVertex< 5 >	vertex (const std::vector< RefCountedVertexTrack > &tracks) const override
CachingVertex< 5 >	vertex (const std::vector< reco::TransientTrack > &tracks, const GlobalPoint &linPoint) const override
CachingVertex< 5 >	vertex (const std::vector< reco::TransientTrack > &tracks, const GlobalPoint &priorPos, const GlobalError &priorError) const override
CachingVertex< 5 >	vertex (const std::vector< reco::TransientTrack > &tracks, const reco::BeamSpot &beamSpot) const override
CachingVertex< 5 >	vertex (const std::vector< RefCountedVertexTrack > &tracks, const reco::BeamSpot &spot) const override
CachingVertex< 5 >	vertex (const std::vector< RefCountedVertexTrack > &tracks, const GlobalPoint &priorPos, const GlobalError &priorError) const override
	~GsfVertexFitter () override
Public Member Functions inherited from VertexFitter< 5 >
virtual CachingVertex< N >	vertex (const std::vector< typename CachingVertex< N >::RefCountedVertexTrack > &tracks) const=0
virtual CachingVertex< N >	vertex (const std::vector< typename CachingVertex< N >::RefCountedVertexTrack > &tracks, const reco::BeamSpot &spot) const=0
virtual CachingVertex< N >	vertex (const std::vector< typename CachingVertex< N >::RefCountedVertexTrack > &tracks, const GlobalPoint &priorPos, const GlobalError &priorError) const=0
	VertexFitter ()
virtual	~VertexFitter ()

Private Attributes
SequentialVertexFitter< 5 > *	theSequentialFitter

Detailed Description

Sequential vertex fitter, to be used with the Gaussian Sum Vertex Filter After the vertes fit, the tracks can be refit with the additional constraint of the vertex position.

Definition at line 20 of file GsfVertexFitter.h.

Member Typedef Documentation

RefCountedVertexTrack

typedef CachingVertex<5>::RefCountedVertexTrack GsfVertexFitter::RefCountedVertexTrack

Definition at line 22 of file GsfVertexFitter.h.

Constructor & Destructor Documentation

GsfVertexFitter() [1/2]

GsfVertexFitter::GsfVertexFitter	(	const edm::ParameterSet &	pSet,
		const LinearizationPointFinder &	linP = DefaultLinearizationPointFinder()
	)

Default constructor, using the given linearization point finder.

Parameters

linP	The LinearizationPointFinder to use
useSmoothing	Specifies whether the tracks sould be refit.

Definition at line 6 of file GsfVertexFitter.cc.

References edm::ParameterSet::getParameter(), SequentialVertexFitter< N >::setMaximumDistance(), SequentialVertexFitter< N >::setMaximumNumberOfIterations(), and theSequentialFitter.

Referenced by clone().

                                                                                                  {
  float theMaxShift = pSet.getParameter<double>("maxDistance");   //0.01
  int theMaxStep = pSet.getParameter<int>("maxNbrOfIterations");  //10
  bool limitComponents_ = pSet.getParameter<bool>("limitComponents");
  bool useSmoothing = pSet.getParameter<bool>("smoothTracks");

  VertexSmoother<5>* theSmoother;
  DeepCopyPointerByClone<GsfVertexMerger> theMerger;

  if (limitComponents_) {
    edm::ParameterSet mergerPSet = pSet.getParameter<edm::ParameterSet>("GsfMergerParameters");
    theMerger = new GsfVertexMerger(mergerPSet);
  }

  if (useSmoothing)
    theSmoother = new GsfVertexSmoother(limitComponents_, &*theMerger);
  else
    theSmoother = new DummyVertexSmoother<5>();

  theSequentialFitter = new SequentialVertexFitter<5>(
      linP, GsfVertexUpdator(limitComponents_, &*theMerger), *theSmoother, MultiPerigeeLTSFactory());
  theSequentialFitter->setMaximumDistance(theMaxShift);
  theSequentialFitter->setMaximumNumberOfIterations(theMaxStep);

  delete theSmoother;
}

~GsfVertexFitter()

GsfVertexFitter::~GsfVertexFitter ( )

override

Definition at line 37 of file GsfVertexFitter.cc.

References theSequentialFitter.

{ delete theSequentialFitter; }

GsfVertexFitter() [2/2]

GsfVertexFitter::GsfVertexFitter

(

const GsfVertexFitter &

original

)

Copy constructor

Definition at line 33 of file GsfVertexFitter.cc.

References definitions::original, and theSequentialFitter.

                                                                {
  theSequentialFitter = original.theSequentialFitter->clone();
}

Member Function Documentation

clone()

GsfVertexFitter* GsfVertexFitter::clone ( void  ) const

inlineoverridevirtual

Fit vertex out of a VertexSeed

Implements VertexFitter< 5 >.

Definition at line 40 of file GsfVertexFitter.h.

References GsfVertexFitter().

{ return new GsfVertexFitter(*this); }

vertex() [1/7]

CachingVertex<5> GsfVertexFitter::vertex ( const std::vector< reco::TransientTrack > &  tracks ) const

inlineoverridevirtual

Fit vertex out of a set of RecTracks

Implements VertexFitter< 5 >.

Definition at line 45 of file GsfVertexFitter.h.

References theSequentialFitter, tracks, and SequentialVertexFitter< N >::vertex().

Referenced by Tau.Tau::dxy().

                                                                                             {
    return theSequentialFitter->vertex(tracks);
  }

vertex() [2/7]

CachingVertex<5> GsfVertexFitter::vertex ( const std::vector< RefCountedVertexTrack > &  tracks ) const

inlineoverride

Fit vertex out of a set of VertexTracks

Definition at line 51 of file GsfVertexFitter.h.

References theSequentialFitter, tracks, and SequentialVertexFitter< N >::vertex().

Referenced by Tau.Tau::dxy().

                                                                                                {
    return theSequentialFitter->vertex(tracks);
  }

vertex() [3/7]

CachingVertex<5> GsfVertexFitter::vertex ( const std::vector< reco::TransientTrack > &  tracks, const GlobalPoint &  linPoint  ) const

inlineoverridevirtual

Fit vertex out of a set of RecTracks. Uses the specified linearization point.

Implements VertexFitter< 5 >.

Definition at line 58 of file GsfVertexFitter.h.

References theSequentialFitter, tracks, and SequentialVertexFitter< N >::vertex().

Referenced by Tau.Tau::dxy().

                                                                             {
    return theSequentialFitter->vertex(tracks, linPoint);
  }

vertex() [4/7]

CachingVertex<5> GsfVertexFitter::vertex ( const std::vector< reco::TransientTrack > &  tracks, const GlobalPoint &  priorPos, const GlobalError &  priorError  ) const

inlineoverridevirtual

Fit vertex out of a set of RecTracks. Uses the specified point as both the linearization point AND as prior estimate of the vertex position. The error is used for the weight of the prior estimate.

Implements VertexFitter< 5 >.

Definition at line 68 of file GsfVertexFitter.h.

References theSequentialFitter, tracks, and SequentialVertexFitter< N >::vertex().

Referenced by Tau.Tau::dxy().

                                                                               {
    return theSequentialFitter->vertex(tracks, priorPos, priorError);
  }

vertex() [5/7]

CachingVertex<5> GsfVertexFitter::vertex ( const std::vector< reco::TransientTrack > &  tracks, const reco::BeamSpot &  beamSpot  ) const

inlineoverridevirtual

Fit vertex out of a set of TransientTracks. The specified BeamSpot will be used as priot, but NOT for the linearization. The specified LinearizationPointFinder will be used to find the linearization point.

Implements VertexFitter< 5 >.

Definition at line 78 of file GsfVertexFitter.h.

References pwdgSkimBPark_cfi::beamSpot, theSequentialFitter, tracks, and SequentialVertexFitter< N >::vertex().

Referenced by Tau.Tau::dxy().

                                                                              {
    return theSequentialFitter->vertex(tracks, beamSpot);
  }

vertex() [6/7]

CachingVertex<5> GsfVertexFitter::vertex ( const std::vector< RefCountedVertexTrack > &  tracks, const reco::BeamSpot &  spot  ) const

inlineoverride

Definition at line 83 of file GsfVertexFitter.h.

References theSequentialFitter, tracks, and SequentialVertexFitter< N >::vertex().

Referenced by Tau.Tau::dxy().

                                                                          {
    return theSequentialFitter->vertex(tracks, spot);
  }

vertex() [7/7]

CachingVertex<5> GsfVertexFitter::vertex ( const std::vector< RefCountedVertexTrack > &  tracks, const GlobalPoint &  priorPos, const GlobalError &  priorError  ) const

inlineoverride

Fit vertex out of a set of VertexTracks. Uses the specified point and error as the prior estimate of the vertex. This position is not used to relinearize the tracks.

Definition at line 92 of file GsfVertexFitter.h.

References theSequentialFitter, tracks, and SequentialVertexFitter< N >::vertex().

Referenced by Tau.Tau::dxy().

                                                                               {
    return theSequentialFitter->vertex(tracks, priorPos, priorError);
  }

Member Data Documentation

theSequentialFitter

SequentialVertexFitter<5>* GsfVertexFitter::theSequentialFitter

private

Definition at line 99 of file GsfVertexFitter.h.

Referenced by GsfVertexFitter(), vertex(), and ~GsfVertexFitter().