Vertex fitter class implementing the Billoir vertex fitter. More...

#include <acts/blob/sPHENIX/Core/include/Acts/Vertexing/FullBilloirVertexFitter.hpp>

Collaboration diagram for Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >:

Classes
struct	Config

struct	State

Public Types
using	InputTrack_t = input_track_t

using	Propagator_t = typename linearizer_t::Propagator_t

using	Linearizer_t = linearizer_t

Public Member Functions
template<typename T = input_track_t, std::enable_if_t< std::is_same< T, BoundTrackParameters >::value, int > = 0>
	FullBilloirVertexFitter (const Config &cfg)
	Constructor used if input_track_t type == BoundTrackParameters.

	extractParameters (func)

Result< Vertex< input_track_t > >	fit (const std::vector< const input_track_t * > &paramVector, const linearizer_t &linearizer, const VertexingOptions< input_track_t > &vertexingOptions, State &state) const
	Fit method, fitting vertex for provided tracks with constraint.

Private Attributes
Config	m_cfg
	Configuration object.

std::function < BoundTrackParameters(input_track_t)>	extractParameters
	Function to extract track parameters, input_track_t objects are BoundTrackParameters by default, function to be overwritten to return BoundTrackParameters for other input_track_t objects.

Detailed Description

template<typename input_track_t, typename linearizer_t>
class Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >

Vertex fitter class implementing the Billoir vertex fitter.

This class implements the Billoir vertex fitter from Ref. (1). It is also useful to have a look at Ref. (2). Note that the Billoir vertex fitter outputs one 4D vertex position and nTrack momenta at this very point.

Ref. (1): Fast vertex fitting with a local parametrization of tracks. Author(s) Billoir, P ; Qian, S In: Nucl. Instrum. Methods Phys. Res., A 311 (1992) 139-150 DOI 10.1016/0168-9002(92)90859-3

Ref. (2): Pattern Recognition, Tracking and Vertex Reconstruction in Particle Detectors. Author(s) Fruehwirth, R ; Strandli, A

Template Parameters

input_track_t	Track object type
linearizer_t	Track linearizer type

Definition at line 43 of file FullBilloirVertexFitter.hpp.

View newest version in sPHENIX GitHub at line 43 of file FullBilloirVertexFitter.hpp

Member Typedef Documentation

template<typename input_track_t , typename linearizer_t >

using Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::InputTrack_t = input_track_t

Definition at line 48 of file FullBilloirVertexFitter.hpp.

View newest version in sPHENIX GitHub at line 48 of file FullBilloirVertexFitter.hpp

template<typename input_track_t , typename linearizer_t >

using Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::Linearizer_t = linearizer_t

Definition at line 50 of file FullBilloirVertexFitter.hpp.

View newest version in sPHENIX GitHub at line 50 of file FullBilloirVertexFitter.hpp

template<typename input_track_t , typename linearizer_t >

using Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::Propagator_t = typename linearizer_t::Propagator_t

Definition at line 49 of file FullBilloirVertexFitter.hpp.

View newest version in sPHENIX GitHub at line 49 of file FullBilloirVertexFitter.hpp

Constructor & Destructor Documentation

template<typename input_track_t , typename linearizer_t >

template<typename T = input_track_t, std::enable_if_t< std::is_same< T, BoundTrackParameters >::value, int > = 0>

Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::FullBilloirVertexFitter ( const Config & cfg )

inline

Constructor used if input_track_t type == BoundTrackParameters.

Parameters

cfg	Configuration object

Definition at line 73 of file FullBilloirVertexFitter.hpp.

View newest version in sPHENIX GitHub at line 73 of file FullBilloirVertexFitter.hpp

Member Function Documentation

template<typename input_track_t , typename linearizer_t >

Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::extractParameters ( func )

inline

Definition at line 85 of file FullBilloirVertexFitter.hpp.

View newest version in sPHENIX GitHub at line 85 of file FullBilloirVertexFitter.hpp

template<typename input_track_t , typename linearizer_t >

Acts::Result< Acts::Vertex< input_track_t > > Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::fit	(	const std::vector< const input_track_t * > &	paramVector,
		const linearizer_t &	linearizer,
		const VertexingOptions< input_track_t > &	vertexingOptions,
		State &	state
	)		const

Fit method, fitting vertex for provided tracks with constraint.

Parameters

paramVector	Vector of track objects to fit vertex to
linearizer	The track linearizer
vertexingOptions	Vertexing options
state	The state object

Returns: Fitted vertex

Definition at line 60 of file FullBilloirVertexFitter.ipp.

View newest version in sPHENIX GitHub at line 60 of file FullBilloirVertexFitter.ipp

References Acts::VertexingOptions< input_track_t >::constraint, Acts::Test::cov, E, Acts::eBoundLoc0, Acts::eBoundLoc1, Acts::eBoundPhi, Acts::eBoundQOverP, Acts::eBoundTheta, Acts::eBoundTime, Acts::eFreeTime, Acts::VertexingOptions< input_track_t >::geoContext, Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::State::linearizerState, m_cfg(), Acts::VertexingOptions< input_track_t >::magFieldContext, testing::internal::move(), nIter, Acts::detail::normalizePhiTheta(), ActsTests::PropagationDatasets::phi, position, Acts::Vertex< input_track_t >::setFitQuality(), Acts::Vertex< input_track_t >::setFullCovariance(), Acts::Vertex< input_track_t >::setFullPosition(), Acts::Vertex< input_track_t >::setTracksAtVertex(), ActsTests::PropagationDatasets::theta, and Acts::VertexingOptions< input_track_t >::useConstraintInFit.

Referenced by ActsExamples::VertexFitterAlgorithm::execute().

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Member Data Documentation

template<typename input_track_t , typename linearizer_t >

std::function<BoundTrackParameters(input_track_t)> Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::extractParameters

private

Function to extract track parameters, input_track_t objects are BoundTrackParameters by default, function to be overwritten to return BoundTrackParameters for other input_track_t objects.

Definition at line 109 of file FullBilloirVertexFitter.hpp.

View newest version in sPHENIX GitHub at line 109 of file FullBilloirVertexFitter.hpp

template<typename input_track_t , typename linearizer_t >

Config Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >::m_cfg

private

Configuration object.

Definition at line 103 of file FullBilloirVertexFitter.hpp.

View newest version in sPHENIX GitHub at line 103 of file FullBilloirVertexFitter.hpp

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

acts/blob/sPHENIX/Core/include/Acts/Vertexing/FullBilloirVertexFitter.hpp
acts/blob/sPHENIX/Core/include/Acts/Vertexing/FullBilloirVertexFitter.ipp

Classes

Public Types

Public Member Functions

Private Attributes

Detailed Description

template<typename input_track_t, typename linearizer_t> class Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<typename input_track_t, typename linearizer_t>
class Acts::FullBilloirVertexFitter< input_track_t, linearizer_t >