#include <coresoftware/blob/master/offline/packages/decayfinder/DecayFinder.h>

Inheritance diagram for DecayFinder:

Collaboration diagram for DecayFinder:

Public Types
using	Decay = std::vector< std::pair< std::pair< int, int >, int >>

Public Member Functions
	DecayFinder ()

	DecayFinder (const std::string &name)

	~DecayFinder () override=default

int	Init (PHCompositeNode *topNode) override

int	process_event (PHCompositeNode *topNode) override

int	End (PHCompositeNode *topNode) override
	Called at the end of all processing.

int	parseDecayDescriptor ()

bool	findDecay (PHCompositeNode *topNode)

bool	findParticle (const std::string &particle)

void	searchHepMCRecord (HepMC::GenParticle *particle, std::vector< int > decayProducts, bool &breakLoop, bool &hasPhoton, bool &hasPi0, bool &failedPT, bool &failedETA, std::vector< int > &correctDecayProducts)

void	searchGeant4Record (int barcode, int pid, std::vector< int > decayProducts, bool &breakLoop, bool &hasPhoton, bool &hasPi0, bool &failedPT, bool &failedETA, std::vector< int > &correctDecayProducts)

bool	checkIfCorrectHepMCParticle (HepMC::GenParticle *particle, bool &trackFailedPT, bool &trackFailedETA)

bool	checkIfCorrectGeant4Particle (PHG4Particle *particle, bool &hasPhoton, bool &hasPi0, bool &trackFailedPT, bool &trackFailedETA)

bool	compareDecays (std::vector< int > required, std::vector< int > actual)

int	deleteElement (int arr[], int n, int x)

void	multiplyVectorByScalarAndSort (std::vector< int > &v, int k)

int	get_pdgcode (const std::string &name)

int	get_charge (const std::string &name)

bool	isInRange (float min, float value, float max)

int	createDecayNode (PHCompositeNode *topNode)

void	fillDecayNode (PHCompositeNode *topNode, Decay &decay)

void	printInfo ()

void	printNode (PHCompositeNode *topNode)

void	setDecayDescriptor (const std::string &decayDescriptor)
	You define a particle decaying with "->", the mother on the left, the decay products on the right.

void	triggerOnDecay (bool trigger)

void	allowPhotons (bool allow)

void	allowPi0 (bool allow)

void	saveDST (bool save)

void	setNodeName (const std::string &name)

void	setEtaRange (float min, float max)

void	setPTmin (float pt)

void	useDecaySpecificEtaRange (bool use)

Public Member Functions inherited from SubsysReco
	~SubsysReco () override

virtual int	EndRun (const int)
	Called at the end of each run.

virtual int	InitRun (PHCompositeNode *)

virtual int	Reset (PHCompositeNode *)
	Reset.

virtual int	ResetEvent (PHCompositeNode *)
	Clean up after each event.

void	Print (const std::string &="ALL") const override

Public Member Functions inherited from Fun4AllBase
virtual	~Fun4AllBase ()

virtual const std::string	Name () const
	Returns the name of this module.

virtual void	Name (const std::string &name)
	Sets the name of this module.

virtual void	Verbosity (const int ival)
	Sets the verbosity of this module (0 by default=quiet).

virtual void	Verbosity (enu_Verbosity ival)
	Sets the verbosity of this module (0 by default=quiet).

virtual int	Verbosity () const
	Gets the verbosity of this module.

Private Member Functions
void	recalculateEta (double py, double vertex[3])

void	calculateEffectiveTPCradius (double vertex[3], double &effective_top_r, double &effective_bottom_r)

Private Attributes
PHHepMCGenEventMap *	m_geneventmap = nullptr

PHHepMCGenEvent *	m_genevt = nullptr

PHG4TruthInfoContainer *	m_truthinfo = nullptr

bool	m_recalcualteEtaRange = true

double	m_tpc_r = 78.0

double	m_tpc_z = 105.0

double	m_effective_top_tpc_r = m_tpc_r

double	m_effective_bottom_tpc_r = m_tpc_r

double	m_eta_high_req = 1.1

double	m_eta_low_req = -1.1

double	m_pt_req = 0.2

int	m_counter = 0

int	m_intermediate_product_counter = 0

int	m_nCandFail_pT = 0

int	m_nCandFail_eta = 0

int	m_nCandFail_pT_and_eta = 0

int	m_nCandReconstructable = 0

int	m_nCandHas_Photon = 0

int	m_nCandHas_Pi0 = 0

int	m_nCandHas_Photon_and_Pi0 = 0

int	m_nCandHas_noPhoton_and_noPi0 = 0

bool	m_getChargeConjugate = false

std::string	m_decayDescriptor

bool	m_triggerOnDecay = false

bool	m_allowPi0 = false

bool	m_allowPhotons = false

int	m_mother_ID = 0

std::vector< int >	m_intermediates_ID

std::vector< int >	m_daughters_ID

int	m_nTracksFromMother = 0

std::vector< int >	m_nTracksFromIntermediates

std::vector< int >	m_motherDecayProducts

bool	m_save_dst

DecayFinderContainer_v1 *	m_decayMap = nullptr

Decay	decayChain

std::string	m_nodeName

std::string	m_container_name

Additional Inherited Members
Protected Member Functions inherited from SubsysReco
	SubsysReco (const std::string &name="NONAME")

Detailed Description

Definition at line 25 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 25 of file DecayFinder.h

Member Typedef Documentation

using DecayFinder::Decay = std::vector<std::pair<std::pair<int, int>, int>>

Definition at line 28 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 28 of file DecayFinder.h

Constructor & Destructor Documentation

DecayFinder::DecayFinder ( )

Definition at line 63 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 63 of file DecayFinder.cc

DecayFinder::DecayFinder ( const std::string & name )

explicit

Definition at line 69 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 69 of file DecayFinder.cc

DecayFinder::~DecayFinder ( )

overridedefault

Member Function Documentation

void DecayFinder::allowPhotons ( bool allow )

inline

Parameters

[in] allow Set to true to allow photons to be associated to your decay

Definition at line 112 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 112 of file DecayFinder.h

References m_allowPhotons.

Referenced by Fun4All_BHG(), and KFParticle_QA().

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void DecayFinder::allowPi0 ( bool allow )

inline

Parameters

[in] allow Set to true to allow pi zero to be associated to your decay

Definition at line 116 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 116 of file DecayFinder.h

References m_allowPi0.

Referenced by Fun4All_BHG(), and KFParticle_QA().

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void DecayFinder::calculateEffectiveTPCradius	(	double	vertex[3],
		double &	effective_top_r,
		double &	effective_bottom_r
	)

private

Definition at line 1184 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1184 of file DecayFinder.cc

References m_tpc_r.

Referenced by recalculateEta().

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bool DecayFinder::checkIfCorrectGeant4Particle	(	PHG4Particle *	particle,
		bool &	hasPhoton,
		bool &	hasPi0,
		bool &	trackFailedPT,
		bool &	trackFailedETA
	)

Definition at line 941 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 941 of file DecayFinder.cc

References compareDecays(), distance(), eta, PHG4Particle::get_barcode(), PHG4Particle::get_pid(), PHG4Particle::get_px(), PHG4Particle::get_py(), PHG4Particle::get_pz(), PHG4Particle::get_vtx_id(), PHG4VtxPoint::get_x(), PHG4VtxPoint::get_y(), PHG4VtxPoint::get_z(), PHG4TruthInfoContainer::GetVtx(), i, index, isInRange(), it, m_daughters_ID, m_eta_high_req, m_eta_low_req, m_intermediates_ID, m_nTracksFromIntermediates, m_pt_req, m_recalcualteEtaRange, m_truthinfo, merge_hashes::p, physmon_track_finding_ttbar::pt, recalculateEta(), searchGeant4Record(), Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_MAX.

Referenced by searchGeant4Record().

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bool DecayFinder::checkIfCorrectHepMCParticle	(	HepMC::GenParticle *	particle,
		bool &	trackFailedPT,
		bool &	trackFailedETA
	)

Definition at line 753 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 753 of file DecayFinder.cc

References parse_cmake_options::begin, compareDecays(), decayChain, distance(), end, PHHepMCGenEvent::get_embedding_id(), i, index, isInRange(), it, listOfResonantPIDs, m_allowPhotons, m_allowPi0, m_daughters_ID, m_eta_high_req, m_eta_low_req, m_genevt, m_intermediate_product_counter, m_intermediates_ID, m_nTracksFromIntermediates, m_pt_req, m_recalcualteEtaRange, recalculateEta(), Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_MAX.

Referenced by searchHepMCRecord().

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bool DecayFinder::compareDecays	(	std::vector< int >	required,
		std::vector< int >	actual
	)

Definition at line 1038 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1038 of file DecayFinder.cc

References i, m_getChargeConjugate, multiplyVectorByScalarAndSort(), Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_MAX.

Referenced by checkIfCorrectGeant4Particle(), checkIfCorrectHepMCParticle(), findDecay(), and searchHepMCRecord().

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int DecayFinder::createDecayNode ( PHCompositeNode * topNode )

Definition at line 1214 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1214 of file DecayFinder.cc

References PHCompositeNode::addNode(), Fun4AllReturnCodes::EVENT_OK, PHNodeIterator::findFirst(), m_container_name, m_decayMap, m_nodeName, Fun4AllBase::Name(), and Acts::Test::pos.

Referenced by Init().

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int DecayFinder::deleteElement	(	int	arr[],
		int	n,
		int	x
	)

Definition at line 1104 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1104 of file DecayFinder.cc

References i, j, and n.

Referenced by findDecay().

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int DecayFinder::End ( PHCompositeNode * )

overridevirtual

Called at the end of all processing.

Reimplemented from SubsysReco.

Definition at line 116 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 116 of file DecayFinder.cc

References printInfo(), Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_SOME.

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void DecayFinder::fillDecayNode	(	PHCompositeNode *	topNode,
		Decay &	decay
	)

Definition at line 1268 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1268 of file DecayFinder.cc

References DecayFinderContainer_v1::insert(), m_decayMap, and m_nodeName.

Referenced by findDecay().

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bool DecayFinder::findDecay ( PHCompositeNode * topNode )

Definition at line 317 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 317 of file DecayFinder.cc

References compareDecays(), decayChain, deleteElement(), fillDecayNode(), PHG4Particle::get_barcode(), PHHepMCGenEvent::get_embedding_id(), PHG4Particle::get_pid(), PHG4Particle::get_primary_id(), PHHepMCGenEvent::getEvent(), PHG4TruthInfoContainer::GetParticleRange(), i, listOfResonantPIDs, m_counter, m_geneventmap, m_genevt, m_getChargeConjugate, m_intermediates_ID, m_mother_ID, m_motherDecayProducts, m_nCandFail_eta, m_nCandFail_pT, m_nCandFail_pT_and_eta, m_nCandHas_noPhoton_and_noPi0, m_nCandHas_Photon, m_nCandHas_Photon_and_Pi0, m_nCandHas_Pi0, m_nCandReconstructable, m_save_dst, m_truthinfo, n, merge_hashes::p, PHHepMCGenEventMap::rbegin(), PHHepMCGenEventMap::rend(), searchGeant4Record(), searchHepMCRecord(), Fun4AllBase::Verbosity(), Fun4AllBase::VERBOSITY_MAX, and Fun4AllBase::VERBOSITY_SOME.

Referenced by process_event().

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bool DecayFinder::findParticle ( const std::string & particle )

Definition at line 1132 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1132 of file DecayFinder.cc

References Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_SOME.

Referenced by get_charge(), get_pdgcode(), and parseDecayDescriptor().

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int DecayFinder::get_charge ( const std::string & name )

Definition at line 1167 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1167 of file DecayFinder.cc

References findParticle().

Referenced by parseDecayDescriptor().

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int DecayFinder::get_pdgcode ( const std::string & name )

Definition at line 1155 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1155 of file DecayFinder.cc

References findParticle().

Referenced by parseDecayDescriptor().

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int DecayFinder::Init ( PHCompositeNode * )

overridevirtual

Called during initialization. Typically this is where you can book histograms, and e.g. register them to Fun4AllServer (so they can be output to file using Fun4AllServer::dumpHistos() method).

Reimplemented from SubsysReco.

Definition at line 75 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 75 of file DecayFinder.cc

References createDecayNode(), m_decayDescriptor, m_save_dst, Fun4AllBase::Name(), parseDecayDescriptor(), Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_SOME.

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bool DecayFinder::isInRange	(	float	min,
		float	value,
		float	max
	)

Definition at line 1179 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1179 of file DecayFinder.cc

Referenced by checkIfCorrectGeant4Particle(), and checkIfCorrectHepMCParticle().

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void DecayFinder::multiplyVectorByScalarAndSort	(	std::vector< int > &	v,
		int	k
	)

Definition at line 1147 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1147 of file DecayFinder.cc

References Acts::PhysicalConstants::c, k, Acts::Experimental::detail::BlueprintHelper::sort(), and Acts::Test::transform.

Referenced by compareDecays().

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int DecayFinder::parseDecayDescriptor ( )

Definition at line 133 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 133 of file DecayFinder.cc

References parse_cmake_options::begin, Acts::PhysicalConstants::c, Fun4AllReturnCodes::DONOTREGISTERSUBSYSTEM, end, findParticle(), get_charge(), get_pdgcode(), i, j, m_daughters_ID, m_decayDescriptor, m_getChargeConjugate, m_intermediates_ID, m_mother_ID, m_motherDecayProducts, m_nTracksFromIntermediates, m_nTracksFromMother, Fun4AllBase::Name(), Acts::Test::pos, Fun4AllBase::Verbosity(), Fun4AllBase::VERBOSITY_MORE, and Fun4AllBase::VERBOSITY_SOME.

Referenced by Init().

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void DecayFinder::printInfo ( )

Definition at line 1274 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1274 of file DecayFinder.cc

References m_counter, m_decayDescriptor, m_nCandFail_eta, m_nCandFail_pT, m_nCandFail_pT_and_eta, m_nCandHas_noPhoton_and_noPi0, m_nCandHas_Photon, m_nCandHas_Photon_and_Pi0, m_nCandHas_Pi0, m_nCandReconstructable, and Fun4AllBase::Name().

Referenced by End().

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void DecayFinder::printNode ( PHCompositeNode * topNode )

Definition at line 1292 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1292 of file DecayFinder.cc

References i, and m_nodeName.

Referenced by process_event().

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int DecayFinder::process_event ( PHCompositeNode * )

overridevirtual

Called for each event. This is where you do the real work.

Reimplemented from SubsysReco.

Definition at line 93 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 93 of file DecayFinder.cc

References Fun4AllReturnCodes::ABORTEVENT, Fun4AllReturnCodes::EVENT_OK, findDecay(), m_decayDescriptor, m_save_dst, m_triggerOnDecay, printNode(), Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_MORE.

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void DecayFinder::recalculateEta	(	double	py,
		double	vertex[3]
	)

private

Definition at line 1193 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 1193 of file DecayFinder.cc

References calculateEffectiveTPCradius(), m_effective_bottom_tpc_r, m_effective_top_tpc_r, m_eta_high_req, m_eta_low_req, and m_tpc_z.

Referenced by checkIfCorrectGeant4Particle(), and checkIfCorrectHepMCParticle().

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void DecayFinder::saveDST ( bool save )

inline

Parameters

[in] allow Set to true to save any of your decays that are found back to the node tree in a DecayFinderContainer The default name is "decay" and will automatically have "_DecayMap" added to the end

Definition at line 121 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 121 of file DecayFinder.h

References m_save_dst, and save().

Referenced by Fun4All_BHG(), and KFParticle_QA().

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void DecayFinder::searchGeant4Record	(	int	barcode,
		int	pid,
		std::vector< int >	decayProducts,
		bool &	breakLoop,
		bool &	hasPhoton,
		bool &	hasPi0,
		bool &	failedPT,
		bool &	failedETA,
		std::vector< int > &	correctDecayProducts
	)

Definition at line 669 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 669 of file DecayFinder.cc

References parse_cmake_options::begin, checkIfCorrectGeant4Particle(), decayChain, end, PHG4Particle::get_barcode(), PHHepMCGenEvent::get_embedding_id(), PHG4Particle::get_parent_id(), PHG4Particle::get_pid(), PHG4Particle::get_primary_id(), PHG4TruthInfoContainer::GetParticle(), PHG4TruthInfoContainer::GetParticleRange(), listOfResonantPIDs, m_allowPhotons, m_allowPi0, m_geneventmap, m_genevt, m_truthinfo, Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_MAX.

Referenced by checkIfCorrectGeant4Particle(), findDecay(), and searchHepMCRecord().

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void DecayFinder::searchHepMCRecord	(	HepMC::GenParticle *	particle,
		std::vector< int >	decayProducts,
		bool &	breakLoop,
		bool &	hasPhoton,
		bool &	hasPi0,
		bool &	failedPT,
		bool &	failedETA,
		std::vector< int > &	correctDecayProducts
	)

Definition at line 534 of file DecayFinder.cc.

View newest version in sPHENIX GitHub at line 534 of file DecayFinder.cc

References parse_cmake_options::begin, checkIfCorrectHepMCParticle(), compareDecays(), decayChain, distance(), end, PHHepMCGenEvent::get_embedding_id(), i, index, it, listOfResonantPIDs, m_allowPhotons, m_allowPi0, m_daughters_ID, m_genevt, m_intermediate_product_counter, m_intermediates_ID, m_nTracksFromIntermediates, searchGeant4Record(), Fun4AllBase::Verbosity(), and Fun4AllBase::VERBOSITY_MAX.

Referenced by findDecay().

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void DecayFinder::setDecayDescriptor ( const std::string & decayDescriptor )

inline

You define a particle decaying with "->", the mother on the left, the decay products on the right.

Use this function to define the decay you want to find in the HepMC record

Parameters

[in] decayDescriptor the description of the decay chain, this is a string You define the decay with these rules: Set the charge of final state tracks with "^", the particle name on the left and the charge on the right. Accepted charges are +, - and 0 Use the same rules as above for any intermediatee decays but contain the entire decay within curled brackets, "{}" If you also want to find the charge conjugate decay, contain the entire decay descriptor within "[]cc" for charge-conjugate. The "cc" is NOT case sensitive The particle names you use must be kept in the TDatabasePDG class from root (https://root.cern.ch/doc/master/classTDatabasePDG.html). Print this table to see available particles with TDatabasePDG::Instance()->Print() An example of a decay would be: "[B+ -> {D0_bar -> kaon^+ pion^-} pion^+]cc"

Note: There is an internal list of resonances which, if they appear in the record, will be further analysed. For example, the f0(980)->pipi decay is too quick to have a flight distance and so we would only see the pion pair in the detector. If you are looking for B_s0 -> J/psi pipi then the decay of the f0 will be studied for a pipi final state, basically inclusive decays are handled automatically. If you wish to study the f0 decay, add it to your decay descriptor and it will automatically be removed from the "skip list"

Definition at line 102 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 102 of file DecayFinder.h

References HeavyFlavorReco::decayDescriptor, and m_decayDescriptor.

Referenced by Fun4All_BHG(), and KFParticle_QA().

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void DecayFinder::setEtaRange	(	float	min,
		float	max
	)

inline

Parameters

[in]	min	The minimum eta threshold for track acceptance
[in]	min	The maximum eta threshold for track acceptance

Note: Set a pseudorapidity threshold range for tracking

Definition at line 133 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 133 of file DecayFinder.h

References m_eta_high_req, m_eta_low_req, and Acts::UnitConstants::min.

Referenced by Fun4All_BHG().

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void DecayFinder::setNodeName ( const std::string & name )

inline

Parameters

[in] name Change the default name of the DecayFinderContainer.

Note: This name will still have "_DecayMap" added to the end, this cannot be changed

Definition at line 126 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 126 of file DecayFinder.h

References m_container_name, and perf_headwind::name.

void DecayFinder::setPTmin ( float pt )

inline

Parameters

[in] pt The minimum pT threshold for track acceptance

Note: Set a minimum pT threshold for tracking

Definition at line 143 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 143 of file DecayFinder.h

References m_pt_req, and physmon_track_finding_ttbar::pt.

Referenced by Fun4All_BHG().

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void DecayFinder::triggerOnDecay ( bool trigger )

inline

Parameters

[in] trigger Set to true to allow further processing of events in which your decay appears, if your decay does not appear, all further processing of this event is skipped. This defaults to false so every event is proccessed in F4A

Definition at line 108 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 108 of file DecayFinder.h

References m_triggerOnDecay.

Referenced by Fun4All_BHG(), and KFParticle_QA().

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void DecayFinder::useDecaySpecificEtaRange ( bool use )

inline

Set this to true to recalcualte a tracks acceptible pseudorapidity range in sPHENIX on a decay-by-decay basis using the secondary vertex position. Set to false to use the default or user specified range

Parameters

[in] True to recalculate the eta requirements per decay, false to use a fixed value (default = true)

Definition at line 151 of file DecayFinder.h.

View newest version in sPHENIX GitHub at line 151 of file DecayFinder.h

References m_recalcualteEtaRange.

Referenced by Fun4All_BHG().

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