FCCAnalyses::VertexFitterSimple Namespace Reference

Vertex interface using Franco Bedeshi's code. More...

Functions
VertexingUtils::FCCAnalysesVertex	VertexFitter (int Primary, ROOT::VecOps::RVec< edm4hep::ReconstructedParticleData > recoparticles, ROOT::VecOps::RVec< edm4hep::TrackState > alltracks, bool BeamSpotConstraint=false, double sigmax=0., double sigmay=0., double sigmaz=0., double bsc_x=0., double bsc_y=0., double bsc_z=0., bool ComputeMomentaAtVertex=true)
	Vertex (code from Franco Bedeschi): passing the recoparticles.
VertexingUtils::FCCAnalysesVertex	VertexFitter_Tk (int Primary, ROOT::VecOps::RVec< edm4hep::TrackState > tracks, bool BeamSpotConstraint=false, double sigmax=0., double sigmay=0., double sigmaz=0., double bsc_x=0., double bsc_y=0., double bsc_z=0., bool ComputeMomentaAtVertex=true)
	Vertex (code from Franco Bedeschi): passing the tracks.
VertexingUtils::FCCAnalysesVertex	VertexFitter_Tk (int Primary, ROOT::VecOps::RVec< edm4hep::TrackState > tracks, const ROOT::VecOps::RVec< edm4hep::TrackState > &alltracks, bool BeamSpotConstraint=false, double sigmax=0., double sigmay=0., double sigmaz=0., double bsc_x=0., double bsc_y=0., double bsc_z=0., bool ComputeMomentaAtVertex=true)
ROOT::VecOps::RVec< edm4hep::TrackState >	get_PrimaryTracks (ROOT::VecOps::RVec< edm4hep::TrackState > tracks, bool BeamSpotConstraint, double bsc_sigmax, double bsc_sigmay, double bsc_sigmaz, double bsc_x, double bsc_y, double bsc_z)
	Return the tracks that are flagged as coming from the primary vertex.
ROOT::VecOps::RVec< edm4hep::TrackState >	get_NonPrimaryTracks (ROOT::VecOps::RVec< edm4hep::TrackState > allTracks, ROOT::VecOps::RVec< edm4hep::TrackState > primaryTracks)
	Return the tracks that are NOT flagged as coming from the primary vertex.
ROOT::VecOps::RVec< bool >	IsPrimary_forTracks (ROOT::VecOps::RVec< edm4hep::TrackState > allTracks, ROOT::VecOps::RVec< edm4hep::TrackState > primaryTracks)
	for an input vector of tracks, return a vector of bools that tell if the track was identified as a primary track
int	supress_stdout ()
void	resume_stdout (int fd)

Detailed Description

Vertex interface using Franco Bedeshi's code.

This represents a set functions and utilities to perform vertexing from a list of tracks.

Function Documentation

get_NonPrimaryTracks()

ROOT::VecOps::RVec< edm4hep::TrackState > FCCAnalyses::VertexFitterSimple::get_NonPrimaryTracks	(	ROOT::VecOps::RVec< edm4hep::TrackState >	allTracks,
		ROOT::VecOps::RVec< edm4hep::TrackState >	primaryTracks )

Return the tracks that are NOT flagged as coming from the primary vertex.

get_PrimaryTracks()

ROOT::VecOps::RVec< edm4hep::TrackState > FCCAnalyses::VertexFitterSimple::get_PrimaryTracks	(	ROOT::VecOps::RVec< edm4hep::TrackState >	tracks,
		bool	BeamSpotConstraint,
		double	bsc_sigmax,
		double	bsc_sigmay,
		double	bsc_sigmaz,
		double	bsc_x,
		double	bsc_y,
		double	bsc_z )

Return the tracks that are flagged as coming from the primary vertex.

IsPrimary_forTracks()

ROOT::VecOps::RVec< bool > FCCAnalyses::VertexFitterSimple::IsPrimary_forTracks	(	ROOT::VecOps::RVec< edm4hep::TrackState >	allTracks,
		ROOT::VecOps::RVec< edm4hep::TrackState >	primaryTracks )

for an input vector of tracks, return a vector of bools that tell if the track was identified as a primary track

resume_stdout()

void FCCAnalyses::VertexFitterSimple::resume_stdout

(

int

fd

)

supress_stdout()

int FCCAnalyses::VertexFitterSimple::supress_stdout

(

)

VertexFitter()

VertexingUtils::FCCAnalysesVertex FCCAnalyses::VertexFitterSimple::VertexFitter	(	int	Primary,
		ROOT::VecOps::RVec< edm4hep::ReconstructedParticleData >	recoparticles,
		ROOT::VecOps::RVec< edm4hep::TrackState >	alltracks,
		bool	BeamSpotConstraint = false,
		double	sigmax = 0.,
		double	sigmay = 0.,
		double	sigmaz = 0.,
		double	bsc_x = 0.,
		double	bsc_y = 0.,
		double	bsc_z = 0.,
		bool	ComputeMomentaAtVertex = true )

Vertex (code from Franco Bedeschi): passing the recoparticles.

Units for the beamspot constraint: mum. See VertexFitter_Tk() below for what ComputeMomentaAtVertex controls.

VertexFitter_Tk() [1/2]

VertexingUtils::FCCAnalysesVertex FCCAnalyses::VertexFitterSimple::VertexFitter_Tk	(	int	Primary,
		ROOT::VecOps::RVec< edm4hep::TrackState >	tracks,
		bool	BeamSpotConstraint = false,
		double	sigmax = 0.,
		double	sigmay = 0.,
		double	sigmaz = 0.,
		double	bsc_x = 0.,
		double	bsc_y = 0.,
		double	bsc_z = 0.,
		bool	ComputeMomentaAtVertex = true )

Vertex (code from Franco Bedeschi): passing the tracks.

Units for the beamspot constraint: mum. ComputeMomentaAtVertex controls whether updated_track_momentum_at_vertex is filled: it requires building a Delphes VertexMore object, whose cost scales as O(ntracks^3) and dominates the total runtime for events with many tracks. Set to false when only the vertex position/chi2 is needed (e.g. FCCAnalysesVertex::vertex via VertexingUtils::get_VertexData) – see https://github.com/HEP-FCC/FCCAnalyses/issues/378.

VertexFitter_Tk() [2/2]

VertexingUtils::FCCAnalysesVertex FCCAnalyses::VertexFitterSimple::VertexFitter_Tk	(	int	Primary,
		ROOT::VecOps::RVec< edm4hep::TrackState >	tracks,
		const ROOT::VecOps::RVec< edm4hep::TrackState > &	alltracks,
		bool	BeamSpotConstraint = false,
		double	sigmax = 0.,
		double	sigmay = 0.,
		double	sigmaz = 0.,
		double	bsc_x = 0.,
		double	bsc_y = 0.,
		double	bsc_z = 0.,
		bool	ComputeMomentaAtVertex = true )