hep.physics.jet

Class AbstractJetFinder

java.lang.Object

hep.physics.jet.AbstractJetFinder

All Implemented Interfaces:

JetFinder

Direct Known Subclasses:

DurhamJetFinder, GenevaJetFinder, JadeE0JetFinder, JadeEJetFinder, JadeJetFinder, JadeP0JetFinder, JadePJetFinder

public abstract class AbstractJetFinder
extends Object
implements JetFinder

Base class for jet finders

Method Summary

Modifier and Type	Method and Description
int	fewestTracks() Find the jet with the fewest particles
double	getYCut() Obtain the current ycut
HepLorentzVector	jet(int index) calculate 4 vector sum for a jet
int	njets() The number of jets found
int	nParticlesPerJet(int index) Find out many particles are in a particular jet
List	particlesInJet(int index) Find out which particles are in a paricular jet
void	setAssumedMassFor3Vectors(double mass) Set the mass to use when converting 3-vectors to 4-vectors This is a static method so the mass applies to all instances of AbstractJetFinder.
void	setEvent(Collection data) Call this to input a new event to the jet finder.
void	setEvent(Collection data, Predicate cut) Call this to input a new event to the jet finder.
void	setYCut(double ycut) Set the YCut value.

Methods inherited from class java.lang.Object

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

Method Detail

njets

public int njets()

Description copied from interface: JetFinder

The number of jets found

Specified by:

njets in interface JetFinder

Returns:

The number of jets found

jet

public HepLorentzVector jet(int index)

Description copied from interface: JetFinder

calculate 4 vector sum for a jet

Specified by:

jet in interface JetFinder

Parameters:

index - The index of the jet of interest

Returns:

The 4 vector of the jet

particlesInJet

public List particlesInJet(int index)

Description copied from interface: JetFinder

Find out which particles are in a paricular jet

Specified by:

particlesInJet in interface JetFinder

Parameters:

index - The index of the jet of interest

Returns:

An enumeration of the particles within the jet

nParticlesPerJet

public int nParticlesPerJet(int index)

Description copied from interface: JetFinder

Find out many particles are in a particular jet

Specified by:

nParticlesPerJet in interface JetFinder

Parameters:

index - The index of the jet of interest

Returns:

The number of particles

fewestTracks

public int fewestTracks()

Description copied from interface: JetFinder

Find the jet with the fewest particles

Specified by:

fewestTracks in interface JetFinder

Returns:

Returns the number of tracks in the jet with the fewest tracks

getYCut

public double getYCut()

Obtain the current ycut

Returns:

The current value of ycut

setYCut

public void setYCut(double ycut)

Set the YCut value. If the new value for ycut is not the same as the old ycut the jet finding will be rerun.

Parameters:

ycut - the new value to be set for ycut

setEvent

public void setEvent(Collection data)

Call this to input a new event to the jet finder.

Specified by:

setEvent in interface JetFinder

Parameters:

data - An Enumeration of either HepLorentzVectors (4Vectors) or Hep3Vectors

setAssumedMassFor3Vectors

public void setAssumedMassFor3Vectors(double mass)

Set the mass to use when converting 3-vectors to 4-vectors This is a static method so the mass applies to all instances of AbstractJetFinder. The default is 0.

Parameters:

mass - The new value to use

setEvent

public void setEvent(Collection data,
                     Predicate cut)

Call this to input a new event to the jet finder. Only elements of the enumeration which are accepted by the predicate will be used for jet finding.

Specified by:

setEvent in interface JetFinder

Parameters:

data - An Enumeration of either HepLorentzVectors (4Vectors) or Hep3Vectors

cut - A predicate that is applied to each element of e