TwoBodyDecayFitter Class Reference

#include <TwoBodyDecayFitter.h>

Public Member Functions
virtual TwoBodyDecayFitter *	clone (void) const
virtual const TwoBodyDecay	estimate (const std::vector< reco::TransientTrack > &tracks, const std::vector< TrajectoryStateOnSurface > &tsos, const TwoBodyDecayVirtualMeasurement &vm) const
virtual const TwoBodyDecay	estimate (const std::vector< reco::TransientTrack > &tracks, const TwoBodyDecayVirtualMeasurement &vm) const
const TwoBodyDecayEstimator *	estimator (void) const
const TwoBodyDecayLinearizationPointFinder *	linearizationPointFinder (void) const
	TwoBodyDecayFitter (const edm::ParameterSet &config)
	TwoBodyDecayFitter (const edm::ParameterSet &config, const LinearizationPointFinder *vf, const TwoBodyDecayLinearizationPointFinder *lpf, const TwoBodyDecayEstimator *est)
const LinearizationPointFinder *	vertexFinder (void) const
virtual	~TwoBodyDecayFitter (void)

Private Types
typedef PerigeeLinearizedTrackState::RefCountedLinearizedTrackState	RefCountedLinearizedTrackState

Private Attributes
DeepCopyPointerByClone< const TwoBodyDecayEstimator >	theEstimator
DeepCopyPointerByClone< const TwoBodyDecayLinearizationPointFinder >	theLinPointFinder
LinearizedTrackStateFactory	theLinTrackStateFactory
DeepCopyPointerByClone< const LinearizationPointFinder >	theVertexFinder

Detailed Description

/class TwoBodyDecayFitter

/author Edmund Widl

Definition at line 21 of file TwoBodyDecayFitter.h.

Member Typedef Documentation

RefCountedLinearizedTrackState

typedef PerigeeLinearizedTrackState::RefCountedLinearizedTrackState TwoBodyDecayFitter::RefCountedLinearizedTrackState

private

Definition at line 48 of file TwoBodyDecayFitter.h.

Constructor & Destructor Documentation

TwoBodyDecayFitter() [1/2]

TwoBodyDecayFitter::TwoBodyDecayFitter

(

const edm::ParameterSet &

config

)

Definition at line 3 of file TwoBodyDecayFitter.cc.

    : theVertexFinder(new DefaultLinearizationPointFinder()),
      theLinPointFinder(new TwoBodyDecayLinearizationPointFinder(config)),
      theEstimator(new TwoBodyDecayEstimator(config)) {}

Referenced by clone().

TwoBodyDecayFitter() [2/2]

TwoBodyDecayFitter::TwoBodyDecayFitter	(	const edm::ParameterSet &	config,
		const LinearizationPointFinder *	vf,
		const TwoBodyDecayLinearizationPointFinder *	lpf,
		const TwoBodyDecayEstimator *	est
	)

Definition at line 8 of file TwoBodyDecayFitter.cc.

    : theVertexFinder(vf->clone()), theLinPointFinder(lpf->clone()), theEstimator(est->clone()) {}

~TwoBodyDecayFitter()

TwoBodyDecayFitter::~TwoBodyDecayFitter ( void  )

virtual

Definition at line 14 of file TwoBodyDecayFitter.cc.

{}

Member Function Documentation

clone()

virtual TwoBodyDecayFitter* TwoBodyDecayFitter::clone ( void  ) const

inlinevirtual

Definition at line 45 of file TwoBodyDecayFitter.h.

{ return new TwoBodyDecayFitter(*this); }

References TwoBodyDecayFitter().

estimate() [1/2]

const TwoBodyDecay TwoBodyDecayFitter::estimate ( const std::vector< reco::TransientTrack > &  tracks, const std::vector< TrajectoryStateOnSurface > &  tsos, const TwoBodyDecayVirtualMeasurement &  vm  ) const

virtual

Definition at line 34 of file TwoBodyDecayFitter.cc.

                                                                                                {
  // get geometrical linearization point
  std::vector<FreeTrajectoryState> freeTrajStates;
  freeTrajStates.push_back(*tsos[0].freeState());
  freeTrajStates.push_back(*tsos[1].freeState());
  GlobalPoint linVertex = theVertexFinder->getLinearizationPoint(freeTrajStates);
 
  // create linearized track states
  std::vector<RefCountedLinearizedTrackState> linTracks;
  linTracks.push_back(theLinTrackStateFactory.linearizedTrackState(linVertex, tracks[0], tsos[0]));
  linTracks.push_back(theLinTrackStateFactory.linearizedTrackState(linVertex, tracks[1], tsos[1]));
 
  // get full linearization point (geomatrical & kinematical)
  const TwoBodyDecayParameters linPoint =
      theLinPointFinder->getLinearizationPoint(linTracks, vm.primaryMass(), vm.secondaryMass());
 
  // make the fit
  return theEstimator->estimate(linTracks, linPoint, vm);
}

References TwoBodyDecayEstimator::estimate(), LinearizationPointFinder::getLinearizationPoint(), TwoBodyDecayLinearizationPointFinder::getLinearizationPoint(), LinearizedTrackStateFactory::linearizedTrackState(), TwoBodyDecayVirtualMeasurement::primaryMass(), TwoBodyDecayVirtualMeasurement::secondaryMass(), theEstimator, theLinPointFinder, theLinTrackStateFactory, theVertexFinder, and tracks.

estimate() [2/2]

const TwoBodyDecay TwoBodyDecayFitter::estimate ( const std::vector< reco::TransientTrack > &  tracks, const TwoBodyDecayVirtualMeasurement &  vm  ) const

virtual

Definition at line 16 of file TwoBodyDecayFitter.cc.

                                                                                                {
  // get geometrical linearization point
  GlobalPoint linVertex = theVertexFinder->getLinearizationPoint(tracks);
 
  // create linearized track states
  std::vector<RefCountedLinearizedTrackState> linTracks;
  linTracks.push_back(theLinTrackStateFactory.linearizedTrackState(linVertex, tracks[0]));
  linTracks.push_back(theLinTrackStateFactory.linearizedTrackState(linVertex, tracks[1]));
 
  // get full linearization point (geomatrical & kinematical)
  const TwoBodyDecayParameters linPoint =
      theLinPointFinder->getLinearizationPoint(linTracks, vm.primaryMass(), vm.secondaryMass());
 
  // make the fit
  return theEstimator->estimate(linTracks, linPoint, vm);
}

References TwoBodyDecayEstimator::estimate(), LinearizationPointFinder::getLinearizationPoint(), TwoBodyDecayLinearizationPointFinder::getLinearizationPoint(), LinearizedTrackStateFactory::linearizedTrackState(), TwoBodyDecayVirtualMeasurement::primaryMass(), TwoBodyDecayVirtualMeasurement::secondaryMass(), theEstimator, theLinPointFinder, theLinTrackStateFactory, theVertexFinder, and tracks.

Referenced by TwoBodyDecayConstraintProducer::produce(), TwoBodyDecayMomConstraintProducer::produce(), and TwoBodyDecayTrajectoryFactory::trajectories().

estimator()

const TwoBodyDecayEstimator* TwoBodyDecayFitter::estimator ( void  ) const

inline

Definition at line 42 of file TwoBodyDecayFitter.h.

{ return theEstimator.operator->(); }

References theEstimator.

linearizationPointFinder()

const TwoBodyDecayLinearizationPointFinder* TwoBodyDecayFitter::linearizationPointFinder ( void  ) const

inline

Definition at line 39 of file TwoBodyDecayFitter.h.

                                                                                          {
    return theLinPointFinder.operator->();
  }

References theLinPointFinder.

vertexFinder()

const LinearizationPointFinder* TwoBodyDecayFitter::vertexFinder ( void  ) const

inline

Definition at line 43 of file TwoBodyDecayFitter.h.

{ return theVertexFinder.operator->(); }

References theVertexFinder.

Member Data Documentation

theEstimator

DeepCopyPointerByClone<const TwoBodyDecayEstimator> TwoBodyDecayFitter::theEstimator

private

Definition at line 52 of file TwoBodyDecayFitter.h.

Referenced by estimate(), and estimator().

theLinPointFinder

DeepCopyPointerByClone<const TwoBodyDecayLinearizationPointFinder> TwoBodyDecayFitter::theLinPointFinder

private

Definition at line 51 of file TwoBodyDecayFitter.h.

Referenced by estimate(), and linearizationPointFinder().

theLinTrackStateFactory

LinearizedTrackStateFactory TwoBodyDecayFitter::theLinTrackStateFactory

private

Definition at line 54 of file TwoBodyDecayFitter.h.

Referenced by estimate().

theVertexFinder

DeepCopyPointerByClone<const LinearizationPointFinder> TwoBodyDecayFitter::theVertexFinder

private

Definition at line 50 of file TwoBodyDecayFitter.h.

Referenced by estimate(), and vertexFinder().