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...

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 ()

TList *	GetCreateOutputHistograms ()

virtual Double_t	GetPythiaCrossSection ()

virtual Double_t	GetWeight ()

Bool_t	IsMCCrossSectionCalculationOn () const

Bool_t	IsMCCrossSectionJustHistoFillOn () const

void	SwitchOnMCCrossSectionCalculation ()

void	SwitchOffMCCrossSectionCalculation ()

void	SwitchOnMCCrossSectionHistoFill ()

void	SetPythiaEventHeader (AliGenPythiaEventHeader *py)

void	SwitchOnMCCrossSectionFromEventHeader ()

void	SwitchOffMCCrossSectionFromEventHeader ()

Bool_t	IsWeightSettingOn () const

Int_t	GetDebug () const

void	SetDebug (Int_t d)

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...

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 32 of file AliAnaWeights.h.

Constructor & Destructor Documentation

AliAnaWeights::AliAnaWeights ( )

Constructor.

Definition at line 39 of file AliAnaWeights.cxx.

virtual AliAnaWeights::~AliAnaWeights ( )

inlinevirtual

Destructor.

Definition at line 39 of file AliAnaWeights.h.

AliAnaWeights::AliAnaWeights ( const AliAnaWeights & )

private

Copy constructor not implemented.

Member Function Documentation

TH1F * AliAnaWeights::GetCentralityWeightsHistogram ( )

Returns: histogram with centrality weights.

Definition at line 308 of file AliAnaWeights.cxx.

TList * AliAnaWeights::GetCreateOutputHistograms ( )

Init histogram pointers.

Returns: TList containing histograms.

Definition at line 58 of file AliAnaWeights.cxx.

Referenced by AliAnaCaloTrackCorrMaker::GetOutputContainer().

Int_t AliAnaWeights::GetDebug ( ) const

inline

Definition at line 91 of file AliAnaWeights.h.

Referenced by AliCaloTrackReader::Init().

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 122 of file AliAnaWeights.cxx.

Referenced by GetWeight().

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 214 of file AliAnaWeights.cxx.

Referenced by GetPythiaCrossSection().

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 84 of file AliAnaWeights.cxx.

Referenced by AliCaloTrackReader::FillInputEvent().

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 295 of file AliAnaWeights.cxx.

Referenced by GetCentralityWeightsHistogram(), and SwitchOnCentralityWeight().

Bool_t AliAnaWeights::IsCentralityWeightOn ( ) const

inline

Definition at line 53 of file AliAnaWeights.h.

Referenced by AliAnaCaloTrackCorrMaker::FillControlHistograms().

Bool_t AliAnaWeights::IsMCCrossSectionCalculationOn ( ) const

inline

Definition at line 71 of file AliAnaWeights.h.

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

Bool_t AliAnaWeights::IsMCCrossSectionJustHistoFillOn ( ) const

inline

Definition at line 72 of file AliAnaWeights.h.

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

Bool_t AliAnaWeights::IsWeightSettingOn ( ) const

inline

Definition at line 89 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 51 of file AliAnaWeights.h.

Referenced by AliCaloTrackReader::FillInputEvent().

void AliAnaWeights::SetCentralityWeightsHistogram ( TH1F * h )

inline

Definition at line 49 of file AliAnaWeights.h.

void AliAnaWeights::SetDebug ( Int_t d )

inline

Definition at line 93 of file AliAnaWeights.h.

void AliAnaWeights::SetPythiaEventHeader ( AliGenPythiaEventHeader * py )

inline

Definition at line 79 of file AliAnaWeights.h.

Referenced by AliCaloTrackReader::FillInputEvent().

void AliAnaWeights::SwitchOffCentralityWeight ( )

inline

Definition at line 57 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOffMCCrossSectionCalculation ( )

inline

Definition at line 75 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOffMCCrossSectionFromEventHeader ( )

inline

Definition at line 82 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOnCentralityWeight ( )

inline

Definition at line 55 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOnMCCrossSectionCalculation ( )

inline

Definition at line 74 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOnMCCrossSectionFromEventHeader ( )

inline

Definition at line 81 of file AliAnaWeights.h.

void AliAnaWeights::SwitchOnMCCrossSectionHistoFill ( )

inline

Definition at line 77 of file AliAnaWeights.h.

Referenced by AddTaskCalorimeterQA(), and AddTaskGenKine().

Member Data Documentation

Float_t AliAnaWeights::fCentrality

private

Container of centrality percentile.

Definition at line 106 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 118 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 128 of file AliAnaWeights.h.

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

TString AliAnaWeights::fCurrFileName

private

Current file path name.

Definition at line 116 of file AliAnaWeights.h.

Referenced by GetPythiaCrossSection().

Int_t AliAnaWeights::fDebug

private

Debug level.

Definition at line 98 of file AliAnaWeights.h.

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

TH1F* AliAnaWeights::fhCentralityWeight

private

Container of centrality weights.

Definition at line 104 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 124 of file AliAnaWeights.h.

Referenced by GetCreateOutputHistograms(), and GetPythiaCrossSection().

TH1F* AliAnaWeights::fhXsec

private

! Cross section in PYTHIA.

Definition at line 122 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 120 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 114 of file AliAnaWeights.h.

Referenced by GetPythiaCrossSection().

AliGenPythiaEventHeader* AliAnaWeights::fPyEventHeader

private

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

Definition at line 126 of file AliAnaWeights.h.

Referenced by GetPythiaCrossSection(), and SetPythiaEventHeader().

Bool_t AliAnaWeights::fUseCentralityWeight

private

Return the centratlity weight.

Definition at line 108 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