Analysis task producing filtered trees with reconstructed jets at generator level. More...

#include <AliHighPtReconstructionEfficiency.h>

Inheritance diagram for HighPtTracks::AliHighPtReconstructionEfficiency:

Public Types
enum	CutType_t { kRJStandardCuts = 0, kRJHybridCuts = 1 }
	Declaration of cut types. More...

Public Member Functions
	AliHighPtReconstructionEfficiency ()

	AliHighPtReconstructionEfficiency (const char *name)

virtual	~AliHighPtReconstructionEfficiency ()

virtual void	UserCreateOutputObjects ()

virtual bool	UserNotify ()

virtual void	UserExec (Option_t *)

void	Terminate (Option_t *)

void	SetMaxEtaParticles (double maxeta)

void	SetMaxEtaJets (double maxeta)

void	SetMinPtTracks (double minpt)

void	SetMaxDR (double maxdr)
	Set Maximum allowed distance for particles associated with a jet to the main jet axis. More...

void	SetStandardTrackCuts (AliESDtrackCuts *const cuts)

void	SetHybridTrackCuts (AliESDtrackCuts *const cuts)

void	SetTaskDebugMode ()

Protected Member Functions
void	SetTrackCuts (AliESDtrackCuts *const cuts, CutType_t cuttype)

bool	IsSelected (const AliVTrack *const track, CutType_t type) const

bool	IsTrueSelected (const AliVParticle *const track) const

void	SelectParticlesForJetfinding (TList &particles) const

void	CreateRectrackLookup ()

std::vector < AliReconstructedParticlePair >	SelectParticles () const

double	GetDR (const fastjet::PseudoJet &recjet, const AliVParticle *const inputtrack) const

const AliParticleList *	FindReconstructedParticleFast (int label) const
	Find reconstructed particles for a given label. More...

void	ProcessJet (AliReducedJetInfo *const jet, const std::vector< AliReconstructedParticlePair > &particles) const

void	ConvertConstituents (AliReducedJetInfo *const recjet, const fastjet::PseudoJet &inputjet)

bool	IsPhysicalPrimary (const AliVParticle *const part) const
	Checks if the particle is a physical primary particle. More...

bool	PythiaInfoFromFile (const char *currFile, double &fXsec, double &fTrials, int &pthard) const

unsigned short	GetNumberOfTPCTrackReferences (AliVParticle *const trk) const

Private Member Functions
	AliHighPtReconstructionEfficiency (const AliHighPtReconstructionEfficiency &)

AliHighPtReconstructionEfficiency &	operator= (const AliHighPtReconstructionEfficiency &)

Private Attributes
AliESDtrackCuts *	fTrackCuts [2]

AliParticleMap *	fParticleMap
	Map of reconstructed particles associate to a Monte-Carlo label. More...

TTree *	fJetTree
	Output tree. More...

AliReducedJetEvent *	fJetEvent
	Output jet event. More...

double	fMaxEtaJets
	\( \eta \) cut for jets More...

double	fMaxEtaParticles
	\( \eta \) cut for particles More...

double	fMinPtParticles
	minimium \( p_{t} \) cut for particles More...

double	fMaxDR
	maximum distance of a particle to the main jet axis More...

double	fCrossSection
	Cross section from PYTHIA. More...

double	fNtrials
	Number of trials from PYTHIA. More...

int	fPtHardBin
	\( p_{t} \)-hard bin of the event More...

bool	fTaskDebugMode
	Switch for debug mode. More...

Detailed Description

Analysis task producing filtered trees with reconstructed jets at generator level.

Analysis task creating reduced jet events. Each event contains reduced jets, which associate constituents and reconstructed track. Constituents are particles associated by the jet finder while tracks are all charged particles in a cone within a maximum radius (can be larger than R set in the jet finder).

Definition at line 55 of file AliHighPtReconstructionEfficiency.h.

Member Enumeration Documentation

enum HighPtTracks::AliHighPtReconstructionEfficiency::CutType_t

Declaration of cut types.

Enumerator
kRJStandardCuts	Standard track cuts.
kRJHybridCuts	Hybrid track cuts.

Definition at line 61 of file AliHighPtReconstructionEfficiency.h.

Constructor & Destructor Documentation

HighPtTracks::AliHighPtReconstructionEfficiency::AliHighPtReconstructionEfficiency ( )

Dummy (I/O) constructor. Not to be used

Definition at line 62 of file AliHighPtReconstructionEfficiency.cxx.

HighPtTracks::AliHighPtReconstructionEfficiency::AliHighPtReconstructionEfficiency ( const char * name )

Main constructor, initialises relevant settings for the task. Setting default values for kinematic track selection

Parameters

name	Name of the task

Definition at line 85 of file AliHighPtReconstructionEfficiency.cxx.

HighPtTracks::AliHighPtReconstructionEfficiency::~AliHighPtReconstructionEfficiency ( )

virtual

Destructor, cleaning up memory allocated by the task.

Definition at line 106 of file AliHighPtReconstructionEfficiency.cxx.

HighPtTracks::AliHighPtReconstructionEfficiency::AliHighPtReconstructionEfficiency ( const AliHighPtReconstructionEfficiency & )

private

Member Function Documentation

void HighPtTracks::AliHighPtReconstructionEfficiency::ConvertConstituents	(	AliReducedJetInfo *const	recjet,
		const fastjet::PseudoJet &	inputjet
	)

protected

Convert jet constituents at jet finder level to the reduced format and adds it to the reduced reconstructed jet.

Parameters

recjet	Reconstructed jet the consituent is associated to
inputjet	A jet constituent to be added to the reconstructed jet

Definition at line 404 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by UserExec().

void HighPtTracks::AliHighPtReconstructionEfficiency::CreateRectrackLookup ( )

protected

Creates a lookup table where particles are associated to MC labels and stores it in the event.

Definition at line 356 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by UserExec().

const AliParticleList * HighPtTracks::AliHighPtReconstructionEfficiency::FindReconstructedParticleFast ( int label ) const

protected

Find reconstructed particles for a given label.

Find all reconstructed particles associated with a reconstruced track. Uses a lookup table which is created at the start of the event.

Parameters

label Label to check

Returns: List of reconstructed particles (NULL if label is not found)

Definition at line 378 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by SelectParticles().

double HighPtTracks::AliHighPtReconstructionEfficiency::GetDR	(	const fastjet::PseudoJet &	recjet,
		const AliVParticle *const	inputtrack
	)		const

protected

Calculates the distance between a particle and the main jet axis.

Parameters

recjet	Jet where the particle is associated to
inputtrack	Paricle to check

Returns: Distance between jet main axis and particle

Definition at line 308 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by ProcessJet().

unsigned short HighPtTracks::AliHighPtReconstructionEfficiency::GetNumberOfTPCTrackReferences ( AliVParticle *const trk ) const

protected

Get the number of track references for a MC-true track

Parameters

trk	the MC particle to check

Returns: The number of track references

Definition at line 498 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by ProcessJet().

bool HighPtTracks::AliHighPtReconstructionEfficiency::IsPhysicalPrimary ( const AliVParticle *const part ) const

protected

Checks if the particle is a physical primary particle.

Function checks whether particle is a physical primary particle. Handles ESD and AOD MC particles.

Parameters

part	Particle to check.

Returns: True if the particle is a physical primary particle, false otherwise

Definition at line 390 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by SelectParticles(), and SelectParticlesForJetfinding().

bool HighPtTracks::AliHighPtReconstructionEfficiency::IsSelected	(	const AliVTrack *const	track,
		CutType_t	cuttype
	)		const

protected

Checks if particle is accepted by a give cut type. Currently implemented cut types are the \( R_{AA} \) standard cuts and the hybrid track cuts.

Parameters

track
cuttype

Returns: True if particle survived the cut, false otherwise

Definition at line 215 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by ProcessJet().

bool HighPtTracks::AliHighPtReconstructionEfficiency::IsTrueSelected ( const AliVParticle *const track ) const

protected

Selects particle as MC-true particle. At this level, the particle \( p_{t} \) and \( \eta \) are checked. Only charged particles are accepted.

Parameters

track Particle to be checked

Returns: True if particle is accepted as true particle according to the truth defintion

Definition at line 237 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by SelectParticles().

AliHighPtReconstructionEfficiency& HighPtTracks::AliHighPtReconstructionEfficiency::operator= ( const AliHighPtReconstructionEfficiency & )

private

void HighPtTracks::AliHighPtReconstructionEfficiency::ProcessJet	(	AliReducedJetInfo *const	recjet,
		const std::vector< AliReconstructedParticlePair > &	particles
	)		const

protected

Fill reduced jet information with associated particles at generator and reconstruction level. Only particles within a maximum distance to the jet are selected to be added to the jet structure. Also all particles reconstructed with a minimum requirement (TPC refit and ITS refit) are added to a particle at this step.

Parameters

recjet	Jet to be filled
particles	List of particle pairs containing particle at generator level and associated reconstruced tracks

Definition at line 321 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by UserExec().

bool HighPtTracks::AliHighPtReconstructionEfficiency::PythiaInfoFromFile	(	const char *	currFile,
		double &	fXsec,
		double &	fTrials,
		int &	pthard
	)		const

protected

Extract cross section and number of trials from a root file created at generation level and fills it to the fieds added in the parameter list. Function is called once a new file is loaded via the function UserNotify. From AliAnalysisTaskEmcal.

Parameters

currFile	File with PYTHIA hard informatino
fXsec	Output field for cross section
fTrials	Output field for number of trials
pthard	Output field for generated \( p_{t} \) of the hard interaction

Returns: Success status (false in case of any error)

Definition at line 424 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by UserNotify().

std::vector< AliReconstructedParticlePair > HighPtTracks::AliHighPtReconstructionEfficiency::SelectParticles ( ) const

protected

This function associates reconstructed particles with Monte-Carlo true particles. For this, a lookup tables which maps all reconstructed particles to a label is used internally. The lookup table is created when the event starts and belongs to the event. Only tracks which are physical primary signal tracks and in the kinematic acceptance are selected. The result is a vector of particle pairs, which store a pointer to the Monte-Carlo particle and a list of reconstructed tracks associated.

Returns: Vector of reconstructed particle sets

Definition at line 273 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by UserExec().

void HighPtTracks::AliHighPtReconstructionEfficiency::SelectParticlesForJetfinding ( TList & particles ) const

protected

Select particles at generation level which are the input for the jet finder. Particles are requested to be within the kinematic acceptance and physical primary. Both charged and neutral particles are accepted for jet finding.

Parameters

particles Which are used as input for the jet finder, filled by this function.

Definition at line 251 of file AliHighPtReconstructionEfficiency.cxx.

Referenced by UserExec().

void HighPtTracks::AliHighPtReconstructionEfficiency::SetHybridTrackCuts ( AliESDtrackCuts *const cuts )

inline

Set hybrid track cuts

Parameters

cuts	Hybrid track cuts

Definition at line 114 of file AliHighPtReconstructionEfficiency.h.

void HighPtTracks::AliHighPtReconstructionEfficiency::SetMaxDR ( double maxdr )

inline

Set Maximum allowed distance for particles associated with a jet to the main jet axis.

Parameters

maxdr Maximum allowed distance

Definition at line 100 of file AliHighPtReconstructionEfficiency.h.

void HighPtTracks::AliHighPtReconstructionEfficiency::SetMaxEtaJets ( double maxeta )

inline

Set maximum \( \eta \) for jets

Parameters

maxeta The maximum allowed \( \eta \)

Definition at line 86 of file AliHighPtReconstructionEfficiency.h.

void HighPtTracks::AliHighPtReconstructionEfficiency::SetMaxEtaParticles ( double maxeta )

inline

Set maximum \( \eta \) for particles and reconstructed tracks

Parameters

maxeta The maximum allowed \( \eta \)

Definition at line 79 of file AliHighPtReconstructionEfficiency.h.

void HighPtTracks::AliHighPtReconstructionEfficiency::SetMinPtTracks ( double minpt )

inline

Set minimum allowed \( p_{t} \) for particles and tracks

Parameters

minpt

Definition at line 93 of file AliHighPtReconstructionEfficiency.h.

void HighPtTracks::AliHighPtReconstructionEfficiency::SetStandardTrackCuts ( AliESDtrackCuts *const cuts )

inline

Set standard track cuts

Parameters

cuts	Standard track cuts

Definition at line 107 of file AliHighPtReconstructionEfficiency.h.

void HighPtTracks::AliHighPtReconstructionEfficiency::SetTaskDebugMode ( )

inline

Set task into debug mode

Definition at line 119 of file AliHighPtReconstructionEfficiency.h.

void HighPtTracks::AliHighPtReconstructionEfficiency::SetTrackCuts	(	AliESDtrackCuts *const	cuts,
		CutType_t	cuttype
	)

inlineprotected

Definition at line 122 of file AliHighPtReconstructionEfficiency.h.

Referenced by SetHybridTrackCuts(), and SetStandardTrackCuts().

void HighPtTracks::AliHighPtReconstructionEfficiency::Terminate ( Option_t * )

inline

Definition at line 72 of file AliHighPtReconstructionEfficiency.h.

void HighPtTracks::AliHighPtReconstructionEfficiency::UserCreateOutputObjects ( )

virtual

Preparing output objects and track selection: create a new TTree and reduced event object, and set the branch address to the new reduced event.

Definition at line 116 of file AliHighPtReconstructionEfficiency.cxx.

void HighPtTracks::AliHighPtReconstructionEfficiency::UserExec ( Option_t * )

virtual

Runs event loop and creates reconstructed event:

Filter particles used for the jet finding
Filter MC-true particles and create lookup of particles with matching reconstructed particle, based on the MC label
Find jets
Create Output event structure with output jets, and match the pre-filtered particles to the jet, select only those with a distance smaller than the distance cut
Write out the event into a TTree

Parameters

option Opitional settings, not used here

Definition at line 161 of file AliHighPtReconstructionEfficiency.cxx.

bool HighPtTracks::AliHighPtReconstructionEfficiency::UserNotify ( )

virtual

Function informing the user when a new file starts. Used to