StNbdFitMaker Class Reference

Public Member Functions
void	DoCentralityDetermination ()
	Default destructor. More...
void	ReadData (const Char_t *data, const Char_t *glauber, const Char_t *dataHistogramName="hRefMultTpc")
	Read real data and glauber ROOT files. More...
TGraph *	Fit (const Int_t nevents=1000, const TString outputFileName="")
Int_t	Scan (const Int_t nevents, const Int_t nppbin, const Double_t nppmin, const Double_t nppmax, const Int_t kbin, const Double_t kmin, const Double_t kmax, const Int_t xbin, const Double_t xmin, const Double_t xmax, const Double_t efficiency=1.0, const Double_t triggerbias=1.0, const Bool_t isConstEfficiency=kTRUE)
	Find minimum chi2/NDF in (npp, k, efficiency) space. More...
void	SetParameters (const Double_t npp, const Double_t k, const Double_t x, const Double_t efficiency, const Double_t triggerbias, const Bool_t isConstEfficiency)
	Set parameters.
void	SetMinimumMultiplicityCut (const Double_t cut)
	Set minimum multiplicity cuts to avoid inefficiency (default is M>50)

Detailed Description

Definition at line 21 of file StNbdFitMaker.h.

Member Function Documentation

void StNbdFitMaker::DoCentralityDetermination

(

)

Default destructor.

Switch on centrality calculation (default is OFF)

Definition at line 59 of file StNbdFitMaker.cxx.

TGraph * StNbdFitMaker::Fit	(	const Int_t	nevents = 1000,
		const TString	outputFileName = ""
	)

Draw multiplicity distribution sampled by nevents (default is 1000 events) Do not write output ROOT file if outputFileName is blank Return TGraph, contains [0] = chi2 [1] = NDF [2] = chi2/NDF

Fit real data by simulated multiplicity distribution

Make sure the refmult and Ncoll_Npart histograms have benn opened

Definition at line 326 of file StNbdFitMaker.cxx.

References StNegativeBinomial::GetK(), StNegativeBinomial::GetMultiplicity(), and StNegativeBinomial::GetX().

Referenced by Scan().

void StNbdFitMaker::ReadData	(	const Char_t *	data,
		const Char_t *	glauber,
		const Char_t *	dataHistogramName = "hRefMultTpc"
	)

Read real data and glauber ROOT files.

TPC refMult

Definition at line 267 of file StNbdFitMaker.cxx.

Int_t StNbdFitMaker::Scan	(	const Int_t	nevents,
		const Int_t	nppbin,
		const Double_t	nppmin,
		const Double_t	nppmax,
		const Int_t	kbin,
		const Double_t	kmin,
		const Double_t	kmax,
		const Int_t	xbin,
		const Double_t	xmin,
		const Double_t	xmax,
		const Double_t	efficiency = 1.0,
		const Double_t	triggerbias = 1.0,
		const Bool_t	isConstEfficiency = kTRUE
	)

Find minimum chi2/NDF in (npp, k, efficiency) space.

Loop over all (npp, k, x) to find out minimum chi2

Definition at line 465 of file StNbdFitMaker.cxx.

References Fit(), and SetParameters().

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

• PWGTools/CentralityCalibration/Glauber/star_glauber/Makers/StCentralityMaker/StNbdFitMaker.h
• PWGTools/CentralityCalibration/Glauber/star_glauber/Makers/StCentralityMaker/StNbdFitMaker.cxx