Calculate the weight to the event to be applied when filling histograms. More...

#include <AliAnaWeights.h>

Inheritance diagram for AliAnaWeights:

Public Member Functions
	AliAnaWeights ()
	Constructor. More...

virtual	~AliAnaWeights ()
	Destructor. More...

TList *	GetCreateOutputHistograms ()

Int_t	GetDebug () const

void	SetDebug (Int_t d)

void	InitCentralityWeightsHistogram (Int_t nbins=100, Int_t minCen=0, Int_t maxCen=100)

TH1F *	GetCentralityWeightsHistogram ()

void	SetCentralityWeightsHistogram (TH1F *h)

void	SetCentrality (Float_t cen)

Bool_t	IsCentralityWeightOn () const

void	SwitchOnCentralityWeight ()

void	SwitchOffCentralityWeight ()

virtual Double_t	GetPythiaCrossSection ()

virtual Double_t	GetWeight ()

Bool_t	IsWeightSettingOn () const

Bool_t	IsMCCrossSectionCalculationOn () const

Bool_t	IsMCCrossSectionJustHistoFillOn () const

void	SetPythiaEventHeader (AliGenPythiaEventHeader *py)

void	SwitchOnMCCrossSectionCalculation ()

void	SwitchOffMCCrossSectionCalculation ()

void	SwitchOnMCCrossSectionHistoFill ()

void	SwitchOnMCCrossSectionFromEventHeader ()

void	SwitchOffMCCrossSectionFromEventHeader ()

Double_t	GetParticlePtWeight (Float_t pt, Int_t pdg, TString genName, Int_t igen) const

void	SetEtaFunction (TF1 *fun)

void	SetPi0Function (TF1 *fun)

void	SwitchOnMCParticlePtWeights ()

void	SwitchOffMCParticlePtWeights ()

Static Public Member Functions
static Bool_t	GetPythiaInfoFromFile (TString currFile, Float_t &xsec, Float_t &trials)

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

AliAnaWeights &	operator= (const AliAnaWeights &)
	Assignment operator not implemented. More...

Private Attributes
Int_t	fDebug
	Debug level. More...

TH1F *	fhCentralityWeight
	Container of centrality weights. More...

Float_t	fCentrality
	Container of centrality percentile. More...

Bool_t	fUseCentralityWeight
	Return the centratlity weight. More...

Bool_t	fDoMCParticlePtWeights
	activate the generation of a pT weight depending on MC particle pdg and generator More...

TF1 *	fEtaFunction
	! eta spectrum parametrization More...

TF1 *	fPi0Function
	! pi0 spectrum parametrization More...

Double_t	fMCWeight
	pT-hard bin MC weight. It is used only internally. More...

TString	fCurrFileName
	Current file path name. More...

Bool_t	fCheckMCCrossSection
	Retrieve from the pyxsec.root file the cross section, only if requested. More...

Bool_t	fJustFillCrossSecHist
	Do not provide a weight, just fill cross section histograms. More...

TH1F *	fhXsec
	! Cross section in PYTHIA. More...

TH1F *	fhTrials
	! Number of event trials in PYTHIA. More...

AliGenPythiaEventHeader *	fPyEventHeader
	! Pythia event header, needed to retrieve cross section, only in recent MC More...

Bool_t	fCheckPythiaEventHeader
	Get cross section from pythia event header. More...

Detailed Description

Calculate the weight to the event to be applied when filling histograms.

This class is intended to get/calculate the global event weight needed to fill histograms. Right now it only gets the weight corresponding to:

the cross section of MC PYTHIA productions produced in pT-hard bins.
in case of centrality dependent weight.

This task is called by the class AliCaloTrackReader in method AliCaloTrackReader::FillInputEvent(). Also, in case of MC pT-hard bins analysis, the cross section and trials used are stored in dedicated histograms via AliAnaCaloTrackCorrMaker, being initialized in AliAnaCaloTrackCorrMaker::GetOutputContainer()

The different analysis subtasks should recover the weight stored in the reader, and apply it when filling the histogram.

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 34 of file AliAnaWeights.h.

Constructor & Destructor Documentation

AliAnaWeights::AliAnaWeights ( )

Constructor.

Definition at line 39 of file AliAnaWeights.cxx.

AliAnaWeights::~AliAnaWeights ( )

virtual

Destructor.

Definition at line 60 of file AliAnaWeights.cxx.

AliAnaWeights::AliAnaWeights ( const AliAnaWeights & )

private

Copy constructor not implemented.

Member Function Documentation

TH1F * AliAnaWeights::GetCentralityWeightsHistogram ( )

Returns: histogram with centrality weights.

Definition at line 355 of file AliAnaWeights.cxx.

Referenced by SetDebug().

TList * AliAnaWeights::GetCreateOutputHistograms ( )

Init histogram pointers.

Returns: TList containing histograms.

Definition at line 73 of file AliAnaWeights.cxx.

Referenced by AliAnaCaloTrackCorrMaker::GetOutputContainer().

Int_t AliAnaWeights::GetDebug ( ) const

inline

Definition at line 48 of file AliAnaWeights.h.

Referenced by AliCaloTrackReader::Init().

Double_t AliAnaWeights::GetParticlePtWeight	(	Float_t	pt,
		Int_t	pdg,
		TString	genName,
		Int_t	igen
	)		const

Returns: the particle pT weight depending on

Parameters

pt	input particle transverse momentum
pdg	input particle type pdg code
genName	TString with generator name
igen	index of generator (not used yet).

currently, only pi0 and eta cases are considered. The parametrizations are passed via SetEtaFunction(TF1* fun) and SetPi0Function(TF1* fun) ex param: TF1* PowerEta0 = new TF1("PowerEta0","[0]*pow([1]/(([1]*exp(-[3]*x)+x)),[2])",4,25); Only active when SwitchOnMCParticlePtWeights()

Definition at line 140 of file AliAnaWeights.cxx.

Referenced by SwitchOffMCCrossSectionFromEventHeader().

Double_t AliAnaWeights::GetPythiaCrossSection ( )

virtual

Read the cross sections and number of trials from pyxsec.root (ESD) or pysec_hists.root (AODs), values stored in specific histograms-trees. If no file available, get information from Pythia event header

Fill the control histograms on number of trials and xsection optionally, with fJustFillCrossSecHist, just do that and do not return a weight. For cross section obtained from pythia event header, this is already the case.

Definition at line 169 of file AliAnaWeights.cxx.

Referenced by GetWeight(), and SwitchOffCentralityWeight().

Bool_t AliAnaWeights::GetPythiaInfoFromFile	(	TString	file,
		Float_t &	xsec,
		Float_t &	trials
	)

static

This method gets and returns the

Parameters

file	: either pyxsec.root (ESDs) or pysec_hists.root (AODs) files
xsec	: cross section
trials	: number of event trials that should be located where the main data file is. This is called in Notify and should provide the path to the AOD/ESD file

Definition at line 261 of file AliAnaWeights.cxx.

Referenced by GetPythiaCrossSection(), and SwitchOffCentralityWeight().

Double_t AliAnaWeights::GetWeight ( )

virtual

Returns

weight to be applied to the event. The weight can be right now:

pT-hard bin in PYTHIA MC events
centrality dependent weight

Definition at line 99 of file AliAnaWeights.cxx.

Referenced by AliCaloTrackReader::FillInputEvent(), and SwitchOffCentralityWeight().

void AliAnaWeights::InitCentralityWeightsHistogram	(	Int_t	nbins = `100`,
		Int_t	minCen = `0`,
		Int_t	maxCen = `100`
	)

This method intializes the histogram containing the centrality weights. Use in case of different binning than default.

Parameters

nbins	: number of bins in histogram, default 100
minCen	: minimum value of centrality, default 0
maxCen	: maximum value of centrality, default 100

Definition at line 342 of file AliAnaWeights.cxx.

Referenced by GetCentralityWeightsHistogram(), SetDebug(), and SwitchOnCentralityWeight().

Bool_t AliAnaWeights::IsCentralityWeightOn ( ) const

inline

Definition at line 63 of file AliAnaWeights.h.

Referenced by AliAnaCaloTrackCorrMaker::FillControlHistograms().

Bool_t AliAnaWeights::IsMCCrossSectionCalculationOn ( ) const

inline

Definition at line 80 of file AliAnaWeights.h.

Referenced by AliAnaCaloTrackCorrMaker::FillControlHistograms(), and AliAnaCaloTrackCorrMaker::GetOutputContainer().

Bool_t AliAnaWeights::IsMCCrossSectionJustHistoFillOn ( ) const

inline

Definition at line 81 of file AliAnaWeights.h.

Referenced by AliAnaCaloTrackCorrMaker::FillControlHistograms(), and AliAnaCaloTrackCorrMaker::GetOutputContainer().

Bool_t AliAnaWeights::IsWeightSettingOn ( ) const

inline

Definition at line 78 of file AliAnaWeights.h.

Referenced by AliCaloTrackReader::FillInputEvent().

AliAnaWeights& AliAnaWeights::operator= ( const AliAnaWeights & )

private

Assignment operator not implemented.

void AliAnaWeights::SetCentrality ( Float_t cen )

inline

Definition at line 61 of file AliAnaWeights.h.

Referenced by AliCaloTrackReader::FillInputEvent().

void AliAnaWeights::SetCentralityWeightsHistogram ( TH1F * h )

inline

Definition at line 59 of file AliAnaWeights.h.

void AliAnaWeights::SetDebug ( Int_t d )

inline

Definition at line 50 of file AliAnaWeights.h.

void AliAnaWeights::SetEtaFunction ( TF1 * fun )

inline

Definition at line 98 of file AliAnaWeights.h.

void AliAnaWeights::SetPi0Function ( TF1 * fun )

inline

Definition at line 99 of file AliAnaWeights.h.

void AliAnaWeights::SetPythiaEventHeader ( AliGenPythiaEventHeader * py )

inline

Definition at line 83 of file AliAnaWeights.h.

Referenced by AliCaloTrackReader::FillInputEvent().

void AliAnaWeights::SwitchOffCentralityWeight ( )

inline

Definition at line 67 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOffMCCrossSectionCalculation ( )

inline

Definition at line 86 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOffMCCrossSectionFromEventHeader ( )

inline

Definition at line 91 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOffMCParticlePtWeights ( )

inline

Definition at line 102 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOnCentralityWeight ( )

inline

Definition at line 65 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOnMCCrossSectionCalculation ( )

inline

Definition at line 85 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOnMCCrossSectionFromEventHeader ( )

inline

Definition at line 90 of file AliAnaWeights.h.

Referenced by AddTaskClusterShape().

void AliAnaWeights::SwitchOnMCCrossSectionHistoFill ( )

inline

Definition at line 88 of file AliAnaWeights.h.

Referenced by AddTaskCalorimeterQA(), AddTaskClusterShape(), AddTaskGenKine(), and AddTaskPi0IMGammaCorrQA().

void AliAnaWeights::SwitchOnMCParticlePtWeights ( )

inline

Definition at line 101 of file AliAnaWeights.h.

Member Data Documentation

Float_t AliAnaWeights::fCentrality

private

Container of centrality percentile.

Definition at line 114 of file AliAnaWeights.h.

Referenced by GetWeight(), and SetCentrality().

Bool_t AliAnaWeights::fCheckMCCrossSection

private

Retrieve from the pyxsec.root file the cross section, only if requested.

Definition at line 136 of file AliAnaWeights.h.

Referenced by GetCreateOutputHistograms(), GetWeight(), IsMCCrossSectionCalculationOn(), IsWeightSettingOn(), SwitchOffMCCrossSectionCalculation(), SwitchOnMCCrossSectionCalculation(), and SwitchOnMCCrossSectionHistoFill().

Bool_t AliAnaWeights::fCheckPythiaEventHeader

private

Get cross section from pythia event header.

Definition at line 146 of file AliAnaWeights.h.

Referenced by GetPythiaCrossSection(), SwitchOffMCCrossSectionFromEventHeader(), and SwitchOnMCCrossSectionFromEventHeader().

TString AliAnaWeights::fCurrFileName

private

Current file path name.

Definition at line 134 of file AliAnaWeights.h.

Referenced by GetPythiaCrossSection().

Int_t AliAnaWeights::fDebug

private

Debug level.

Definition at line 106 of file AliAnaWeights.h.

Referenced by GetDebug(), GetPythiaCrossSection(), and SetDebug().

Bool_t AliAnaWeights::fDoMCParticlePtWeights

private

activate the generation of a pT weight depending on MC particle pdg and generator

Definition at line 122 of file AliAnaWeights.h.

Referenced by GetParticlePtWeight(), SwitchOffMCParticlePtWeights(), and SwitchOnMCParticlePtWeights().

TF1* AliAnaWeights::fEtaFunction

private

! eta spectrum parametrization

Definition at line 124 of file AliAnaWeights.h.

Referenced by GetParticlePtWeight(), SetEtaFunction(), and ~AliAnaWeights().

TH1F* AliAnaWeights::fhCentralityWeight

private

Container of centrality weights.

Definition at line 112 of file AliAnaWeights.h.

Referenced by GetCentralityWeightsHistogram(), GetWeight(), InitCentralityWeightsHistogram(), SetCentralityWeightsHistogram(), and ~AliAnaWeights().

TH1F* AliAnaWeights::fhTrials

private

! Number of event trials in PYTHIA.

Definition at line 142 of file AliAnaWeights.h.

Referenced by GetCreateOutputHistograms(), and GetPythiaCrossSection().

TH1F* AliAnaWeights::fhXsec

private

! Cross section in PYTHIA.

Definition at line 140 of file AliAnaWeights.h.

Referenced by GetCreateOutputHistograms(), and GetPythiaCrossSection().

Bool_t AliAnaWeights::fJustFillCrossSecHist

private

Do not provide a weight, just fill cross section histograms.

Definition at line 138 of file AliAnaWeights.h.

Referenced by GetPythiaCrossSection(), IsMCCrossSectionJustHistoFillOn(), and SwitchOnMCCrossSectionHistoFill().

Double_t AliAnaWeights::fMCWeight

private

pT-hard bin MC weight. It is used only internally.

Definition at line 132 of file AliAnaWeights.h.

Referenced by GetPythiaCrossSection().

TF1* AliAnaWeights::fPi0Function

private

! pi0 spectrum parametrization

Definition at line 126 of file AliAnaWeights.h.

Referenced by GetParticlePtWeight(), SetPi0Function(), and ~AliAnaWeights().

AliGenPythiaEventHeader* AliAnaWeights::fPyEventHeader

private

! Pythia event header, needed to retrieve cross section, only in recent MC

Definition at line 144 of file AliAnaWeights.h.

Referenced by GetPythiaCrossSection(), and SetPythiaEventHeader().

Bool_t AliAnaWeights::fUseCentralityWeight

private

Return the centratlity weight.

Definition at line 116 of file AliAnaWeights.h.

Referenced by GetWeight(), IsCentralityWeightOn(), IsWeightSettingOn(), SwitchOffCentralityWeight(), and SwitchOnCentralityWeight().

The documentation for this class was generated from the following files:

PWG/CaloTrackCorrBase/AliAnaWeights.h
PWG/CaloTrackCorrBase/AliAnaWeights.cxx

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation