org.hps.recon.filtering

Class V0CandidateFilter

java.lang.Object

org.lcsim.util.Driver

org.hps.recon.filtering.EventReconFilter

org.hps.recon.filtering.V0CandidateFilter

public class V0CandidateFilter
extends EventReconFilter

Class to strip off trident candidates. Currently defined as: e+ e- events with tracks; track and vertex chi2 must be better than values defined by cuts, and track times must be within trackDtCut of each other. If the tight constraint is enabled, tracks must be matched to clusters, the Ecal cluster times must be within _timingCut [2.5ns] of each other, and there must be exactly one V0 passing all cuts. Only GBL vertices are considered.

Version:

$Id:

Author:

Norman A Graf

Nested Class Summary

Nested classes/interfaces inherited from class org.lcsim.util.Driver

org.lcsim.util.Driver.AbortRunException, org.lcsim.util.Driver.NextEventException

Field Summary

Fields

Modifier and Type	Field and Description
private double	_clusterTimingCut
private boolean	_keepEpicsDataEvents
private boolean	_tight
private String	_V0CandidateCollectionName
private double	trackChi2Cut
private double	trackDtCut
private double	trackPMax
private double	v0Chi2Cut
private double	v0PMax

Fields inherited from class org.hps.recon.filtering.EventReconFilter

beamEnergy

Fields inherited from class org.lcsim.util.Driver

HLEVEL_DEFAULT, HLEVEL_FULL, HLEVEL_HIGH, HLEVEL_NORMAL, HLEVEL_OFF

Constructor Summary

Constructors

Constructor and Description
V0CandidateFilter()

Method Summary

Modifier and Type	Method and Description
protected void	detectorChanged(org.lcsim.geometry.Detector detector)
protected void	process(org.lcsim.event.EventHeader event)
void	setClusterTimingCut(double d) Maximum difference in Calorimeter Cluster Seed Hit times [ns]
void	setKeepEpicsDataEvents(boolean b) Setting this true keeps ALL events containing EPICS data
void	setTightConstraint(boolean b) Setting a tight constraint requires one and only one candidate in the event
void	setTrackChi2Cut(double trackChi2Cut) Maximum track chi2 for a V0 to be counted.
void	setTrackDtCut(double trackDtCut) Maximum track time different for a V0 to be counted.
void	setTrackPMax(double trackPMax) Maximum track momentum for a V0 to be counted.
void	setV0CandidateCollectionName(String s) Name of V0 Candidate ReconstructedParticle Collection Name
void	setV0Chi2Cut(double v0Chi2Cut) Maximum vertex chi2 for a V0 to be counted.
void	setV0PMax(double v0PMax)

Methods inherited from class org.hps.recon.filtering.EventReconFilter

endOfData, getBeamEnergy, incrementEventPassed, incrementEventProcessed, setBeamEnergy, skipEvent

Methods inherited from class org.lcsim.util.Driver

add, clearStatistics, contains, drivers, getConditionsManager, getHistogramLevel, getLogger, getName, getRandom, printStatistics, processChildren, remove, resume, setHistogramLevel, setLogLevel, setRandom, startOfData, suspend

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_V0CandidateCollectionName

private String _V0CandidateCollectionName

_clusterTimingCut

private double _clusterTimingCut

v0Chi2Cut

private double v0Chi2Cut

trackChi2Cut

private double trackChi2Cut

trackDtCut

private double trackDtCut

trackPMax

private double trackPMax

v0PMax

private double v0PMax

_tight

private boolean _tight

_keepEpicsDataEvents

private boolean _keepEpicsDataEvents

Constructor Detail

V0CandidateFilter

public V0CandidateFilter()

Method Detail

process

protected void process(org.lcsim.event.EventHeader event)

Overrides:

process in class org.lcsim.util.Driver

setV0Chi2Cut

public void setV0Chi2Cut(double v0Chi2Cut)

Maximum vertex chi2 for a V0 to be counted.

Parameters:

v0Chi2Cut - default of 10.0.

setTrackChi2Cut

public void setTrackChi2Cut(double trackChi2Cut)

Maximum track chi2 for a V0 to be counted. A V0 is rejected if either of the final state tracks has a chi2 exceeding the cut.

Parameters:

trackChi2Cut - default of 20.0.

setTrackDtCut

public void setTrackDtCut(double trackDtCut)

Maximum track time different for a V0 to be counted.

Parameters:

trackDtCut - units of ns, default of 5.0

setTrackPMax

public void setTrackPMax(double trackPMax)

Maximum track momentum for a V0 to be counted. A V0 is rejected if either of the final state tracks has momentum exceeding this cut.

Parameters:

trackPMax - units of GeV, default of 0.9

setV0PMax

public void setV0PMax(double v0PMax)

setClusterTimingCut

public void setClusterTimingCut(double d)

Maximum difference in Calorimeter Cluster Seed Hit times [ns]

Parameters:

d -

setV0CandidateCollectionName

public void setV0CandidateCollectionName(String s)

Name of V0 Candidate ReconstructedParticle Collection Name

Parameters:

s -

setTightConstraint

public void setTightConstraint(boolean b)

Setting a tight constraint requires one and only one candidate in the event

Parameters:

b -

setKeepEpicsDataEvents

public void setKeepEpicsDataEvents(boolean b)

Setting this true keeps ALL events containing EPICS data

Parameters:

b -

detectorChanged

protected void detectorChanged(org.lcsim.geometry.Detector detector)

Overrides:

detectorChanged in class EventReconFilter