TruthTrackerHepMC Class Reference

#include <analysis/blob/master/EICAnalysis/TruthTrackerHepMC.h>

Collaboration diagram for TruthTrackerHepMC:

Public Member Functions
	TruthTrackerHepMC ()
	~TruthTrackerHepMC ()
void	set_hepmc_geneventmap (PHHepMCGenEventMap *evtmap)
HepMC::GenParticle *	FindParticle (int)
HepMC::GenParticle *	FindDaughterParticle (int, HepMC::GenParticle *)
HepMC::GenParticle *	FindBeamLepton ()
HepMC::GenParticle *	FindBeamHadron ()
HepMC::GenParticle *	FindScatteredLepton ()
void	FindDecayParticles (HepMC::GenParticle *, uint &, uint &, uint &)
void	FindMissingPt (float &, float &)

Private Member Functions
void	UpdateFinalStateParticle (HepMC::GenParticle *&)

Private Attributes
PHHepMCGenEventMap *	_genevtmap

Detailed Description

Class with helpful functions to trace particle and event information through HepMC event records.

Some useful PDG codes:

particle ... PGD code

LQ_ue ... 39 tau- ... 15 pi+ ... 211 pi- ... -211 u ... 2 d ... 1

Definition at line 23 of file TruthTrackerHepMC.h.

View newest version in sPHENIX GitHub at line 23 of file TruthTrackerHepMC.h

Constructor & Destructor Documentation

TruthTrackerHepMC::TruthTrackerHepMC

(

)

Default constructor.

Definition at line 13 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 13 of file TruthTrackerHepMC.C

TruthTrackerHepMC::~TruthTrackerHepMC ( )

inline

Default destructor.

Definition at line 32 of file TruthTrackerHepMC.h.

View newest version in sPHENIX GitHub at line 32 of file TruthTrackerHepMC.h

Member Function Documentation

HepMC::GenParticle * TruthTrackerHepMC::FindBeamHadron

(

)

Locate beam hadron; the incident hadron is assumed to be the second particle in the particle list.

Definition at line 108 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 108 of file TruthTrackerHepMC.C

References PHHepMCGenEvent::getEvent(), and particle.

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HepMC::GenParticle * TruthTrackerHepMC::FindBeamLepton

(

)

Locate beam lepton; the incident lepton is assumed to be the first particle in the particle list.

Definition at line 87 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 87 of file TruthTrackerHepMC.C

References PHHepMCGenEvent::getEvent(), and particle.

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HepMC::GenParticle * TruthTrackerHepMC::FindDaughterParticle	(	int	pid,
		HepMC::GenParticle *	particle_mother
	)

Locate a daughet particle with specific PDG code in event record that is a child of a given particle. Return pointer to first daughter particle with matching ID found.

Definition at line 56 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 56 of file TruthTrackerHepMC.C

References gtest_filter_unittest::child, and train_ambiguity_solver::pid.

Referenced by LeptoquarksReco::AddTrueTauTag(), and Leptoquarks::process_event().

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void TruthTrackerHepMC::FindDecayParticles	(	HepMC::GenParticle *	particle_mother,
		uint &	decay_prong,
		uint &	decay_hcharged,
		uint &	decay_lcharged
	)

Function to find final decay products of given particle

Definition at line 208 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 208 of file TruthTrackerHepMC.C

Referenced by LeptoquarksReco::AddTrueTauTag(), and Leptoquarks::process_event().

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void TruthTrackerHepMC::FindMissingPt	(	float &	pt_miss,
		float &	pt_miss_phi
	)

Function to calculate missing transverse momentum (pT_miss) and azimuthal angle of missing pT (pT_miss_phi)

Definition at line 319 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 319 of file TruthTrackerHepMC.C

References PHHepMCGenEvent::getEvent(), and merge_hashes::p.

Referenced by Leptoquarks::process_event().

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HepMC::GenParticle * TruthTrackerHepMC::FindParticle

(

int

pid

)

Locate a particle with specific PDG code in event record. Return pointer to first particle with matching ID found.

Definition at line 19 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 19 of file TruthTrackerHepMC.C

References PHHepMCGenEvent::getEvent(), merge_hashes::p, particle, and train_ambiguity_solver::pid.

Referenced by LeptoquarksReco::AddTrueTauTag(), and Leptoquarks::process_event().

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HepMC::GenParticle * TruthTrackerHepMC::FindScatteredLepton

(

)

Locate scattered lepton; the scattered lepton beam is assumed to be the first final-state particle in the particle list with the same PDG code as the incident lepton beam.

Definition at line 130 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 130 of file TruthTrackerHepMC.C

References PHHepMCGenEvent::getEvent(), merge_hashes::p, and particle.

Referenced by ExclusiveReco::AddInvariantMassInformation(), and DISKinematicsReco::CollectEmCandidatesFromTruth().

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void TruthTrackerHepMC::set_hepmc_geneventmap ( PHHepMCGenEventMap *  evtmap )

inline

Set pointer to PHHeoMCGenEventMap to use for this event.

Definition at line 35 of file TruthTrackerHepMC.h.

View newest version in sPHENIX GitHub at line 35 of file TruthTrackerHepMC.h

References _genevtmap.

Referenced by ExclusiveReco::AddInvariantMassInformation(), LeptoquarksReco::AddTrueTauTag(), DISKinematicsReco::CollectEmCandidatesFromTruth(), and Leptoquarks::process_event().

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void TruthTrackerHepMC::UpdateFinalStateParticle ( HepMC::GenParticle *&  particle )

private

Check if this is the final state particle or not- update pointer if needed

Definition at line 179 of file TruthTrackerHepMC.C.

View newest version in sPHENIX GitHub at line 179 of file TruthTrackerHepMC.C

References gtest_filter_unittest::child.

Member Data Documentation

PHHepMCGenEventMap* TruthTrackerHepMC::_genevtmap

private

The PHHepMCGenEvent map with all HepMC information for this event

Definition at line 66 of file TruthTrackerHepMC.h.

View newest version in sPHENIX GitHub at line 66 of file TruthTrackerHepMC.h

Referenced by set_hepmc_geneventmap().

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

• analysis/blob/master/EICAnalysis/TruthTrackerHepMC.h
• analysis/blob/master/EICAnalysis/TruthTrackerHepMC.C