Class with utils to perform Isolation Cuts. More...

#include <AliIsolationCut.h>

Inheritance diagram for AliIsolationCut:

Public Types
enum	type { kPtThresIC, kSumPtIC, kPtFracIC, kSumPtFracIC, kSumDensityIC, kSumBkgSubIC }

enum	partInCone { kNeutralAndCharged =0, kOnlyNeutral =1, kOnlyCharged =2 }

Public Member Functions
	AliIsolationCut ()
	Default constructor. Initialize parameters. More...

virtual	~AliIsolationCut ()
	Virtual destructor. More...

void	InitParameters ()

TString	GetICParametersList ()

Float_t	GetCellDensity (AliAODPWG4ParticleCorrelation pCandidate, AliCaloTrackReader reader) const
	Get good cell density (number of active cells over all cells in cone). More...

void	MakeIsolationCut (TObjArray plCTS, TObjArray plNe, AliCaloTrackReader reader, AliCaloPID pid, Bool_t bFillAOD, AliAODPWG4ParticleCorrelation *pCandidate, TString aodObjArrayName, Int_t &n, Int_t &nfrac, Float_t &ptSum, Float_t &ptLead, Bool_t &isolated)

void	Print (const Option_t *opt) const
	Print some relevant parameters set for the analysis. More...

Float_t	Radius (Float_t etaCandidate, Float_t phiCandidate, Float_t eta, Float_t phi) const

Float_t	CalculateExcessAreaFraction (Float_t excess) const

void	CalculateUEBandClusterNormalization (AliCaloTrackReader *reader, Float_t etaC, Float_t phiC, Float_t phiUEptsumCluster, Float_t etaUEptsumCluster, Float_t &phiUEptsumClusterNorm, Float_t &etaUEptsumClusterNorm, Float_t &excessFracEta, Float_t &excessFracPhi) const
	Get normalization of cluster background band. More...

void	CalculateUEBandTrackNormalization (AliCaloTrackReader *reader, Float_t etaC, Float_t phiC, Float_t phiUEptsumTrack, Float_t etaUEptsumTrack, Float_t &phiUEptsumTrackNorm, Float_t &etaUEptsumTrackNorm, Float_t &excessFracEta, Float_t &excessFracPhi) const
	Get normalization of track background band. More...

void	GetCoeffNormBadCell (AliAODPWG4ParticleCorrelation pCandidate, AliCaloTrackReader reader, Float_t &coneBadCellsCoeff, Float_t &etaBandBadCellsCoeff, Float_t &phiBandBadCellsCoeff)
	Get good cell density (number of active cells over all cells in cone). More...

Float_t	GetConeSize () const

Float_t	GetPtThreshold () const

Float_t	GetPtThresholdMax () const

Float_t	GetSumPtThreshold () const

Float_t	GetSumPtThresholdMax () const

Float_t	GetPtFraction () const

Int_t	GetICMethod () const

Int_t	GetParticleTypeInCone () const

Int_t	GetDebug () const

Bool_t	GetFracIsThresh () const

Float_t	GetMinDistToTrigger () const

void	SetConeSize (Float_t r)

void	SetPtThreshold (Float_t pt)

void	SetPtThresholdMax (Float_t pt)

void	SetSumPtThreshold (Float_t s)

void	SetSumPtThresholdMax (Float_t s)

void	SetPtFraction (Float_t pt)

void	SetICMethod (Int_t i)

void	SetParticleTypeInCone (Int_t i)

void	SetDebug (Int_t d)

void	SetFracIsThresh (Bool_t f)

void	SetTrackMatchedClusterRejectionInCone (Bool_t tm)

void	SetMinDistToTrigger (Float_t md)

Private Member Functions
	AliIsolationCut (const AliIsolationCut &g)
	Copy constructor not implemented. More...

AliIsolationCut &	operator= (const AliIsolationCut &g)
	Assignment operator not implemented. More...

Private Attributes
Float_t	fConeSize
	Size of the isolation cone. More...

Float_t	fPtThreshold
	Minimum pt of the particles in the cone or sum in cone (UE pt mean in the forward region cone) More...

Float_t	fPtThresholdMax
	Maximum pt of the particles outside the cone (needed to fit shower distribution isolated/non-isolated particles) More...

Float_t	fSumPtThreshold
	Minimum of sum pt of the particles in the cone (UE sum in the forward region cone) More...

Float_t	fSumPtThresholdMax
	Maximum of sum pt of the particles in the cone (UE sum in the forward region cone) More...

Float_t	fPtFraction
	Fraction of the momentum of particles in cone or sum in cone. More...

Int_t	fICMethod
	Isolation cut method to be used: kPtIC, kSumPtIC, kPtFracIC, kSumPtFracIC. More...

Int_t	fPartInCone
	Type of particles inside cone: kNeutralAndCharged, kOnlyNeutral, kOnlyCharged. More...

Int_t	fDebug
	Debug level. More...

Bool_t	fFracIsThresh
	Use threshold instead of fraction when pt leading is small. More...

Bool_t	fIsTMClusterInConeRejected
	Enable to remove the Track matching removal of clusters in cone sum pt calculation in case of kNeutralAndCharged analysis. More...

Float_t	fDistMinToTrigger
	Minimal distance between isolation candidate particle and particles in cone to count them for this isolation. More...

TLorentzVector	fMomentum
	! Momentum of cluster, temporal object. More...

TVector3	fTrackVector
	! Track moment, temporal object. More...

Detailed Description

Class with utils to perform Isolation Cuts.

Class containing methods for the isolation cut. An AOD candidate (AliAODPWG4ParticleCorrelation type) is passed. Look in a cone around the candidate and study the hadronic activity inside to decide if the candidate is isolated

More information can be found in this twiki.

Author: Gustavo Conesa Balbastre Gusta.nosp@m.vo.C.nosp@m.onesa.nosp@m..Bal.nosp@m.bastr.nosp@m.e@ce.nosp@m.rn.ch, LPSC-IN2P3-CNRS

Definition at line 30 of file AliIsolationCut.h.

Member Enumeration Documentation

enum AliIsolationCut::partInCone

Enumerator
kNeutralAndCharged
kOnlyNeutral
kOnlyCharged

Definition at line 43 of file AliIsolationCut.h.

enum AliIsolationCut::type

Enumerator
kPtThresIC
kSumPtIC
kPtFracIC
kSumPtFracIC
kSumDensityIC
kSumBkgSubIC

Definition at line 41 of file AliIsolationCut.h.

Constructor & Destructor Documentation

AliIsolationCut::AliIsolationCut ( )

Default constructor. Initialize parameters.

Definition at line 42 of file AliIsolationCut.cxx.

virtual AliIsolationCut::~AliIsolationCut ( )

inlinevirtual

Virtual destructor.

Definition at line 37 of file AliIsolationCut.h.

AliIsolationCut::AliIsolationCut ( const AliIsolationCut & g )

private

Copy constructor not implemented.

Member Function Documentation

Float_t AliIsolationCut::CalculateExcessAreaFraction ( Float_t excess ) const

If isolation cone are is outside a detector, calculate the area in excess.

Parameters

excess cone size minus acceptance of detector.

Returns: Area of a circunference segment 1/2 R^2 (angle-sin(angle)), angle = 2*ACos((R-excess)/R).

Definition at line 150 of file AliIsolationCut.cxx.

Referenced by AliAnaParticleIsolation::CalculateNormalizeUEBandPerUnitArea(), CalculateUEBandClusterNormalization(), and CalculateUEBandTrackNormalization().

void AliIsolationCut::CalculateUEBandClusterNormalization	(	AliCaloTrackReader *	reader,
		Float_t	etaC,
		Float_t	phiC,
		Float_t	phiUEptsumCluster,
		Float_t	etaUEptsumCluster,
		Float_t &	phiUEptsumClusterNorm,
		Float_t &	etaUEptsumClusterNorm,
		Float_t &	excessFracEta,
		Float_t &	excessFracPhi
	)		const

Get normalization of cluster background band.

Definition at line 65 of file AliIsolationCut.cxx.

Referenced by AliAnaParticleIsolation::CalculateNormalizeUEBandPerUnitArea(), and MakeIsolationCut().

void AliIsolationCut::CalculateUEBandTrackNormalization	(	AliCaloTrackReader *	reader,
		Float_t	etaC,
		Float_t	phiC,
		Float_t	phiUEptsumTrack,
		Float_t	etaUEptsumTrack,
		Float_t &	phiUEptsumTrackNorm,
		Float_t &	etaUEptsumTrackNorm,
		Float_t &	excessFracEta,
		Float_t &	excessFracPhi
	)		const

Get normalization of track background band.

Definition at line 105 of file AliIsolationCut.cxx.

Referenced by AliAnaParticleIsolation::CalculateNormalizeUEBandPerUnitArea(), and MakeIsolationCut().

Float_t AliIsolationCut::GetCellDensity	(	AliAODPWG4ParticleCorrelation *	pCandidate,
		AliCaloTrackReader *	reader
	)		const

Get good cell density (number of active cells over all cells in cone).

Definition at line 170 of file AliIsolationCut.cxx.

Referenced by MakeIsolationCut(), and AliAnaParticleIsolation::MakeSeveralICAnalysis().

void AliIsolationCut::GetCoeffNormBadCell	(	AliAODPWG4ParticleCorrelation *	pCandidate,
		AliCaloTrackReader *	reader,
		Float_t &	coneBadCellsCoeff,
		Float_t &	etaBandBadCellsCoeff,
		Float_t &	phiBandBadCellsCoeff
	)

Get good cell density (number of active cells over all cells in cone).

Definition at line 253 of file AliIsolationCut.cxx.

Float_t AliIsolationCut::GetConeSize ( ) const

inline

Definition at line 87 of file AliIsolationCut.h.

Referenced by AliAnaParticleIsolation::CalculateCaloCellSignalInCone(), AliAnaParticleIsolation::CalculateCaloCellUEBand(), AliAnaParticleIsolation::CalculateCaloUEBand(), AliAnaParticleIsolation::CalculateNormalizeUEBandPerUnitArea(), AliAnaParticleIsolation::CalculateTrackUEBand(), AliAnaParticleIsolation::FillAcceptanceHistograms(), AliAnaParticleIsolation::GetCreateOutputObjects(), AliAnaGeneratorKine::IsLeadingAndIsolated(), and AliAnaParticleIsolation::MakeSeveralICAnalysis().

Int_t AliIsolationCut::GetDebug ( ) const

inline

Definition at line 95 of file AliIsolationCut.h.

Referenced by AliAnaCaloTrackCorrBaseClass::InitDebug().

Bool_t AliIsolationCut::GetFracIsThresh ( ) const

inline

Definition at line 96 of file AliIsolationCut.h.

Int_t AliIsolationCut::GetICMethod ( ) const

inline

Definition at line 93 of file AliIsolationCut.h.

Referenced by AliAnaParticleIsolation::GetCreateOutputObjects(), and AliAnaGeneratorKine::IsLeadingAndIsolated().

TString AliIsolationCut::GetICParametersList ( )

Definition at line 350 of file AliIsolationCut.cxx.

Referenced by AliAnaParticleIsolation::GetAnalysisCuts().

Float_t AliIsolationCut::GetMinDistToTrigger ( ) const

inline

Definition at line 97 of file AliIsolationCut.h.

Int_t AliIsolationCut::GetParticleTypeInCone ( ) const

inline

Definition at line 94 of file AliIsolationCut.h.

Referenced by AliAnaParticleIsolation::CalculateCaloUEBand(), AliAnaParticleIsolation::CalculateNormalizeUEBandPerUnitArea(), AliAnaParticleIsolation::FillAcceptanceHistograms(), AliAnaParticleHadronCorrelation::FillEventMixPool(), AliAnaParticleHadronCorrelation::GetCreateOutputObjects(), AliAnaParticleIsolation::GetCreateOutputObjects(), and AliAnaParticleHadronCorrelation::MakeChargedMixCorrelation().

Float_t AliIsolationCut::GetPtFraction ( ) const

inline

Definition at line 92 of file AliIsolationCut.h.

Referenced by AliAnaParticleIsolation::MakeSeveralICAnalysis().

Float_t AliIsolationCut::GetPtThreshold ( ) const

inline

Definition at line 88 of file AliIsolationCut.h.

Referenced by AliAnaParticleIsolation::FillAcceptanceHistograms(), AliAnaGeneratorKine::IsLeadingAndIsolated(), AliAnaParticleIsolation::IsTriggerTheNearSideEventLeadingParticle(), and AliAnaParticleIsolation::MakeSeveralICAnalysis().

Float_t AliIsolationCut::GetPtThresholdMax ( ) const

inline

Definition at line 89 of file AliIsolationCut.h.

Float_t AliIsolationCut::GetSumPtThreshold ( ) const

inline

Definition at line 90 of file AliIsolationCut.h.

Referenced by AliAnaParticleIsolation::IsTriggerTheNearSideEventLeadingParticle(), and AliAnaParticleIsolation::MakeSeveralICAnalysis().

Float_t AliIsolationCut::GetSumPtThresholdMax ( ) const

inline

Definition at line 91 of file AliIsolationCut.h.

void AliIsolationCut::InitParameters ( )

Definition at line 381 of file AliIsolationCut.cxx.

Referenced by AliIsolationCut().

void AliIsolationCut::MakeIsolationCut	(	TObjArray *	plCTS,
		TObjArray *	plNe,
		AliCaloTrackReader *	reader,
		AliCaloPID *	pid,
		Bool_t	bFillAOD,
		AliAODPWG4ParticleCorrelation *	pCandidate,
		TString	aodArrayRefName,
		Int_t &	n,
		Int_t &	nfrac,
		Float_t &	coneptsum,
		Float_t &	ptLead,
		Bool_t &	isolated
	)

Declare a candidate particle isolated depending on the cluster or track particle multiplicity and/or momentum.

Parameters

plCTS	List of tracks.
plNe	List of clusters.
reader	pointer to AliCaloTrackReader. Needed to access event info.
pid	pointer to AliCaloPID. Needed to reject matched clusters in isolation cone.
bFillAOD	Indicate if particles in cone must be added to AOD particle object.
pCandidate	Kinematics and + of candidate particle for isolation.
aodArrayRefName	Name of array where list of tracks/clusters in cone is stored.
n	number of tracks/clusters above threshold in cone, output.
nfrac	1 if fraction pT cluster-track / pT trigger in cone avobe threshold, output.
coneptsum	total momentum energy in cone (track+cluster), output.
ptLead	momentum of leading cluster or track in cone, output.
isolated	final bool with decission on isolation of candidate particle.

Definition at line 413 of file AliIsolationCut.cxx.

Referenced by AliAnaParticleIsolation::MakeAnalysisFillAOD(), AliAnaParticleIsolation::MakeAnalysisFillHistograms(), AliAnaParticleHadronCorrelation::MakeChargedMixCorrelation(), and AliAnaParticleIsolation::MakeSeveralICAnalysis().

AliIsolationCut& AliIsolationCut::operator= ( const AliIsolationCut & g )

private

Assignment operator not implemented.

void AliIsolationCut::Print ( const Option_t * opt ) const

Print some relevant parameters set for the analysis.

Definition at line 884 of file AliIsolationCut.cxx.

Referenced by AddTaskCaloTrackCorrM(), and ConfigureIsolationAnalysis().

Float_t AliIsolationCut::Radius	(	Float_t	etaC,
		Float_t	phiC,
		Float_t	eta,
		Float_t	phi
	)		const

Calculate the distance to trigger from any particle.

Parameters

etaC	pseudorapidity of candidate particle.
phiC	azimuthal angle of candidate particle.
eta	pseudorapidity of track/cluster to be considered in cone.
phi	azimuthal angle of track/cluster to be considered in cone.

Definition at line 909 of file AliIsolationCut.cxx.

Referenced by AliAnaParticleIsolation::CalculateCaloSignalInCone(), AliAnaParticleIsolation::CalculateCaloUEBand(), AliAnaParticleIsolation::CalculateTrackSignalInCone(), AliAnaParticleIsolation::CalculateTrackUEBand(), AliAnaParticleIsolation::FillAcceptanceHistograms(), GetCellDensity(), GetCoeffNormBadCell(), AliAnaGeneratorKine::GetPartonsAndJets(), AliAnaGeneratorKine::IsLeadingAndIsolated(), AliAnaPi0EbE::MakeInvMassInCalorimeter(), MakeIsolationCut(), and AliAnaParticleIsolation::MakeSeveralICAnalysis().