hep.physics.jet

Class FixNumberOfJetsFinder

java.lang.Object

hep.physics.jet.FixNumberOfJetsFinder

All Implemented Interfaces:

JetFinder

public class FixNumberOfJetsFinder
extends Object
implements JetFinder

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FixNumberOfJetsFinder.NumJetsNotFoundException

Constructor Summary

Constructors

Constructor and Description
FixNumberOfJetsFinder() Default constructor, sets up JadeEJetFinder.
FixNumberOfJetsFinder(AbstractJetFinder jetFinder) Constructor to specify a specfic JetFinder to use.
FixNumberOfJetsFinder(int nJets) Constructor specifying number of requested jets, sets up JadeEJetFinder as default.
FixNumberOfJetsFinder(int nJets, AbstractJetFinder jetFinder) Constructor to specify rquested number of jets and a specfic JetFinder to use.

Method Summary

Modifier and Type	Method and Description
int	fewestTracks() Find the jet with the fewest particles
double	getYCut() Resulting ycut value.
HepLorentzVector	jet(int index) calculate 4 vector sum for a jet
int	njets() Actual number jets formed.
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	setEvent(Collection data) Set the current event data
void	setEvent(Collection data, Predicate cut) Set the current event data
void	setNJets(int nJets) Set number of jets requested to be formed.

Methods inherited from class java.lang.Object

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

Constructor Detail

FixNumberOfJetsFinder

public FixNumberOfJetsFinder()

Default constructor, sets up JadeEJetFinder.

FixNumberOfJetsFinder

public FixNumberOfJetsFinder(int nJets)

Constructor specifying number of requested jets, sets up JadeEJetFinder as default.

Parameters:

nJets - number of jets to be formed

FixNumberOfJetsFinder

public FixNumberOfJetsFinder(AbstractJetFinder jetFinder)

Constructor to specify a specfic JetFinder to use.

Parameters:

jetFinder - JetFinder to use

FixNumberOfJetsFinder

public FixNumberOfJetsFinder(int nJets,
                             AbstractJetFinder jetFinder)

Constructor to specify rquested number of jets and a specfic JetFinder to use.

Parameters:

nJets - number of jets to be formed

jetFinder - JetFinder to use

Method Detail

setNJets

public void setNJets(int nJets)

Set number of jets requested to be formed.

Parameters:

nJets - number of jets to be formed

njets

public int njets()

Actual number jets formed. Should be the same as the number of jets requested, unless a problem occured. (E.g. too little input objects.)

Specified by:

njets in interface JetFinder

Returns:

number of jets

See Also:

JetFinder.njets()

getYCut

public double getYCut()

Resulting ycut value.

Returns:

final ycut

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

setEvent

public void setEvent(Collection data)

Description copied from interface: JetFinder

Set the current event data

Specified by:

setEvent in interface JetFinder

Parameters:

data - An List of 3- or 4-vectors

setEvent

public void setEvent(Collection data,
                     Predicate cut)

Description copied from interface: JetFinder

Set the current event data

Specified by:

setEvent in interface JetFinder

Parameters:

data - An List of 3- or 4-vectors

cut - Only elements of e that are accepted by this predicate will be used in the jet finding