AliHFInvMassFitter class for the fit of invariant mass distribution of charm hadrons. More...

#include <AliHFInvMassFitter.h>

Inheritance diagram for AliHFInvMassFitter:

Public Types
enum	ETypeOfBkg { kExpo =0, kLin =1, kPol2 =2, kNoBk =3, kPow =4, kPowEx =5 }

enum	ETypeOfSgn { kGaus =0, k2Gaus =1, k2GausSigmaRatioPar =2 }

Public Member Functions
	AliHFInvMassFitter ()

	AliHFInvMassFitter (const TH1F *histoToFit, Double_t minvalue, Double_t maxvalue, Int_t fittypeb=kExpo, Int_t fittypes=kGaus)

	~AliHFInvMassFitter ()

void	SetHistogramFit (const TH1F *histoToFit)

void	SetRangeFit (Double_t minvalue, Double_t maxvalue)

void	SetFitFunctions (Int_t fittypeb, Int_t fittypes)

void	SetUseLikelihoodFit ()

void	SetUseLikelihoodWithWeightsFit ()

void	SetUseChi2Fit ()

void	SetFitOption (TString opt)

void	SetParticlePdgMass (Double_t mass)

Double_t	GetParticlePdgMass ()

void	SetPolDegreeForBackgroundFit (Int_t deg)

void	SetInitialGaussianMean (Double_t mean)

void	SetInitialGaussianSigma (Double_t sigma)

void	SetInitialSecondGaussianSigma (Double_t sigma)

void	SetInitialFrac2Gaus (Double_t frac)

void	SetInitialRatio2GausSigma (Double_t fracsigma)

void	SetFixGaussianMean (Double_t mean)

void	SetFixGaussianSigma (Double_t sigma)

void	SetFixSecondGaussianSigma (Double_t sigma)

void	SetFixFrac2Gaus (Double_t frac)

void	SetFixRatio2GausSigma (Double_t sigmafrac)

void	SetFixSignalYield (Double_t yield)

void	SetNSigma4SideBands (Double_t ns=4.)

TH1F *	SetTemplateReflections (const TH1 *h, TString opt, Double_t minRange, Double_t maxRange)

void	SetInitialReflOverS (Double_t rovers)

void	SetFixReflOverS (Double_t rovers)

void	SetSmoothReflectionTemplate (Bool_t opt)

void	IncludeSecondGausPeak (Double_t mass, Bool_t fixm, Double_t width, Bool_t fixw)

Double_t	GetRawYield () const

Double_t	GetRawYieldError () const

Double_t	GetMean () const

Double_t	GetMeanUncertainty () const

Double_t	GetSigma () const

Double_t	GetSigmaUncertainty () const

Double_t	GetReflOverSig () const

Double_t	GetReflOverSigUncertainty () const

TF1 *	GetBackgroundFullRangeFunc ()

TF1 *	GetBackgroundRecalcFunc ()

TF1 *	GetBkgPlusReflFunc ()

TF1 *	GetSignalFunc ()

TF1 *	GetMassFunc ()

Double_t	GetChiSquare () const

Double_t	GetReducedChiSquare () const

Double_t	GetFitProbability () const

TH1F *	GetHistoClone () const

Double_t	GetRawYieldBinCounting (Double_t &errRyBC, Double_t nSigma=3., Int_t option=0, Int_t pdgCode=0) const

Double_t	GetRawYieldBinCounting (Double_t &errRyBC, Double_t minMass, Double_t maxMass, Int_t option=0) const

Int_t	MassFitter (Bool_t draw=kTRUE)

Double_t	FitFunction4Sgn (Double_t x, Double_t par)

Double_t	FitFunction4Bkg (Double_t x, Double_t par)

Double_t	FitFunction4Refl (Double_t x, Double_t par)

Double_t	FitFunction4BkgAndRefl (Double_t x, Double_t par)

Double_t	FitFunction4SecPeak (Double_t x, Double_t par)

Double_t	FitFunction4Mass (Double_t x, Double_t par)

virtual void	Signal (Double_t nOfSigma, Double_t &signal, Double_t &errsignal) const

virtual void	Signal (Double_t min, Double_t max, Double_t &signal, Double_t &errsignal) const

void	Background (Double_t nOfSigma, Double_t &background, Double_t &errbackground) const

void	Background (Double_t min, Double_t max, Double_t &background, Double_t &errbackground) const

void	DrawHere (TVirtualPad *c, Double_t nsigma=3, Int_t writeFitInfo=1)

void	Significance (Double_t nOfSigma, Double_t &significance, Double_t &errsignificance) const

void	Significance (Double_t min, Double_t max, Double_t &significance, Double_t &errsignificance) const

TH1F *	GetResidualsAndPulls (TH1 hPulls=0x0, TH1 hResidualTrend=0x0, TH1 *hPullsTrend=0x0, Double_t minrange=0, Double_t maxrange=-1)

void	PrintFunctions ()

Private Member Functions
	AliHFInvMassFitter (const AliHFInvMassFitter &source)

AliHFInvMassFitter &	operator= (const AliHFInvMassFitter &source)

void	SetNumberOfParams ()

Double_t	CheckForSignal (Double_t mean, Double_t sigma)

TF1 *	CreateBackgroundFitFunction (TString fname, Double_t integral)

TF1 *	CreateSignalFitFunction (TString fname, Double_t integral)

TF1 *	CreateSecondPeakFunction (TString fname, Double_t integral)

TF1 *	CreateReflectionFunction (TString fname)

TF1 *	CreateBackgroundPlusReflectionFunction (TString fname)

TF1 *	CreateTotalFitFunction (TString fname)

Bool_t	PrepareHighPolFit (TF1 *fback)

Double_t	BackFitFuncPolHelper (Double_t x, Double_t par)

void	DrawFit ()

Private Attributes
TH1F *	fHistoInvMass

Double_t	fMinMass
	histogram to fit More...

Double_t	fMaxMass
	lower mass limit More...

Int_t	fTypeOfFit4Bkg
	upper mass limit More...

Int_t	fPolDegreeBkg
	background fit func More...

Int_t	fCurPolDegreeBkg
	degree of polynomial expansion for back fit (option 6 for back) More...

Double_t	fMassParticle
	help variable More...

Int_t	fTypeOfFit4Sgn
	pdg value of particle mass More...

Double_t	fMass
	signal fit func More...

Double_t	fMassErr
	signal gaussian mean value More...

Double_t	fSigmaSgn
	unc on signal gaussian mean value More...

Double_t	fSigmaSgnErr
	signal gaussian sigma More...

Double_t	fSigmaSgn2Gaus
	unc on signal gaussian sigma More...

Bool_t	fFixedMean
	signal second gaussian sigma in case of k2Gaus More...

Bool_t	fFixedSigma
	switch for fix mean of gaussian More...

Bool_t	fFixedSigma2Gaus
	switch for fix Sigma of gaussian More...

Double_t	fFixedRawYield
	switch for fix Sigma of second gaussian in case of k2Gaus More...

Double_t	fFrac2Gaus
	initialization for wa yield More...

Bool_t	fFixedFrac2Gaus
	initialization for fraction of 2nd gaussian in case of k2Gaus or k2GausSigmaRatioPar More...

Double_t	fRatio2GausSigma
	switch for fixed fraction of 2nd gaussian in case of k2Gaus or k2GausSigmaRatioPar More...

Bool_t	fFixedRatio2GausSigma
	initialization for ratio between two gaussian sigmas in case of k2GausSigmaRatioPar More...

Int_t	fNParsSig
	switch for fixed ratio between two gaussian sigmas in case of k2GausSigmaRatioPar More...

Int_t	fNParsBkg
	fit parameters in signal fit function More...

Bool_t	fOnlySideBands
	fit parameters in background fit function More...

Double_t	fNSigma4SideBands
	kTRUE = only side bands considered More...

TString	fFitOption
	number of sigmas to veto the signal peak More...

Double_t	fRawYield
	L, LW or Chi2. More...

Double_t	fRawYieldErr
	signal gaussian integral More...

TF1 *	fSigFunc
	err on signal gaussian integral More...

TF1 *	fBkgFuncSb
	Signal fit function. More...

TF1 *	fBkgFunc
	background fit function (1st step, side bands only) More...

TF1 *	fBkgFuncRefit
	background fit function (1st step, extended in peak region) More...

Bool_t	fReflections
	background fit function (2nd step) More...

Int_t	fNParsRfl
	flag use/not use reflections More...

Double_t	fRflOverSig
	fit parameters in reflection fit function More...

Bool_t	fFixRflOverSig
	reflection/signal More...

TH1F *	fHistoTemplRfl
	switch for fix refl/signal More...

Bool_t	fSmoothRfl
	histogram with reflection template More...

Double_t	fRawYieldHelp
	switch for smoothing of reflection template More...

TF1 *	fRflFunc
	internal variable for fit with reflections More...

TF1 *	fBkRFunc
	fit function for reflections More...

Bool_t	fSecondPeak
	fit function for reflections More...

Int_t	fNParsSec
	switch off/on second peak (for D+->KKpi in Ds) More...

Double_t	fSecMass
	fit parameters in 2nd peak fit function More...

Double_t	fSecWidth
	position of the 2nd peak More...

Bool_t	fFixSecMass
	width of the 2nd peak More...

Bool_t	fFixSecWidth
	flag to fix the position of the 2nd peak More...

TF1 *	fSecFunc
	flag to fix the width of the 2nd peak More...

TF1 *	fTotFunc
	fit function for second peak More...

Detailed Description

AliHFInvMassFitter class for the fit of invariant mass distribution of charm hadrons.

Author: Author: F.Prino, A. Rossi, C. Bianchin

Definition at line 24 of file AliHFInvMassFitter.h.

Member Enumeration Documentation

enum AliHFInvMassFitter::ETypeOfBkg

Enumerator
kExpo
kLin
kPol2
kNoBk
kPow
kPowEx

Definition at line 27 of file AliHFInvMassFitter.h.

enum AliHFInvMassFitter::ETypeOfSgn

Enumerator
kGaus
k2Gaus
k2GausSigmaRatioPar

Definition at line 28 of file AliHFInvMassFitter.h.

Constructor & Destructor Documentation

AliHFInvMassFitter::AliHFInvMassFitter ( )

Implemenatation od AliHFInvMassFitter class for the fit of invariant mass distribution of charm hadron candidates reconstructed from their hadronic decays

Author: F. Prino -> Simplified version of AliHFMassFitter class developed by C.Bianchin -> With extra features:

Polynomials with degree >2 as background fit function (as implemented by A. Rossi in AliHFMassFitterVAR
Possibility to incude a Gaussian function in the background (for D+ -> KKpi decays in the D_s background)

default constructor

Definition at line 49 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone().

AliHFInvMassFitter::AliHFInvMassFitter	(	const TH1F *	histoToFit,
		Double_t	minvalue,
		Double_t	maxvalue,
		Int_t	fittypeb = `kExpo`,
		Int_t	fittypes = `kGaus`
	)

standard constructor

Definition at line 105 of file AliHFInvMassFitter.cxx.

AliHFInvMassFitter::~AliHFInvMassFitter ( )

destructor

Definition at line 163 of file AliHFInvMassFitter.cxx.

AliHFInvMassFitter::AliHFInvMassFitter ( const AliHFInvMassFitter & source )

private

Member Function Documentation

Double_t AliHFInvMassFitter::BackFitFuncPolHelper	(	Double_t *	x,
		Double_t *	par
	)

private

Helper function for polynomials with degree>2

Definition at line 968 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and PrepareHighPolFit().

void AliHFInvMassFitter::Background	(	Double_t	nOfSigma,
		Double_t &	background,
		Double_t &	errbackground
	)		const

Return background integral in mean +- n sigma

Definition at line 837 of file AliHFInvMassFitter.cxx.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), DrawHere(), GetHistoClone(), ProjectCombinHFAndFit(), and Significance().

void AliHFInvMassFitter::Background	(	Double_t	min,
		Double_t	max,
		Double_t &	background,
		Double_t &	errbackground
	)		const

Return background integral in a range

Definition at line 848 of file AliHFInvMassFitter.cxx.

Double_t AliHFInvMassFitter::CheckForSignal	(	Double_t	mean,
		Double_t	sigma
	)

private

Checks if there are signal counts above the background in the invariant mass region of the peak

Definition at line 408 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

TF1 * AliHFInvMassFitter::CreateBackgroundFitFunction	(	TString	fname,
		Double_t	integral
	)

private

Creates the background fit fucntion

Definition at line 433 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

TF1 * AliHFInvMassFitter::CreateBackgroundPlusReflectionFunction ( TString fname )

private

Creates the function with sum of background and reflections

Definition at line 508 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

TF1 * AliHFInvMassFitter::CreateReflectionFunction ( TString fname )

private

Creates a function for reflections contribution in the D0->Kpi inv. mass distribution

Definition at line 497 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

TF1 * AliHFInvMassFitter::CreateSecondPeakFunction	(	TString	fname,
		Double_t	integral
	)

private

Creates a function for a gaussian peak in the background fit function Can be used e.g. to include the D+->KKpi peak in the D_s inv. mass fit

Definition at line 483 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

TF1 * AliHFInvMassFitter::CreateSignalFitFunction	(	TString	fname,
		Double_t	integral
	)

private

Creates the fit function for the signal peak

Definition at line 526 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

TF1 * AliHFInvMassFitter::CreateTotalFitFunction ( TString fname )

private

Creates the total fit fucntion (signal+background+possible second peak)

Definition at line 577 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

void AliHFInvMassFitter::DrawFit ( )

private

Steering method to draw the fit output

Definition at line 350 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

void AliHFInvMassFitter::DrawHere	(	TVirtualPad *	c,
		Double_t	nsigma = `3`,
		Int_t	writeFitInfo = `1`
	)

Core method to draw the fit output

Definition at line 358 of file AliHFInvMassFitter.cxx.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), DrawFit(), GetHistoClone(), and ProjectCombinHFAndFit().

Double_t AliHFInvMassFitter::FitFunction4Bkg	(	Double_t *	x,
		Double_t *	par
	)

Fit function for the background

Definition at line 619 of file AliHFInvMassFitter.cxx.

Referenced by CreateBackgroundFitFunction(), FitFunction4BkgAndRefl(), FitFunction4Mass(), and GetHistoClone().

Double_t AliHFInvMassFitter::FitFunction4BkgAndRefl	(	Double_t *	x,
		Double_t *	par
	)

Fit fucntion with the sum of background and reflections

Definition at line 780 of file AliHFInvMassFitter.cxx.

Referenced by CreateBackgroundPlusReflectionFunction(), and GetHistoClone().

Double_t AliHFInvMassFitter::FitFunction4Mass	(	Double_t *	x,
		Double_t *	par
	)

Total fit function (signal+background+possible second peak)

Definition at line 802 of file AliHFInvMassFitter.cxx.

Referenced by CreateTotalFitFunction(), and GetHistoClone().

Double_t AliHFInvMassFitter::FitFunction4Refl	(	Double_t *	x,
		Double_t *	par
	)

Fit function for reflections: D0->Kpi decays with swapped mass assignment to pion and kaon decay tracks

Definition at line 763 of file AliHFInvMassFitter.cxx.

Referenced by CreateReflectionFunction(), FitFunction4BkgAndRefl(), FitFunction4Mass(), and GetHistoClone().

Double_t AliHFInvMassFitter::FitFunction4SecPeak	(	Double_t *	x,
		Double_t *	par
	)

Fit function for a second gaussian peak To be used, e.g., for D+->KKpi in the Ds mass spectrum

Definition at line 789 of file AliHFInvMassFitter.cxx.

Referenced by CreateSecondPeakFunction(), FitFunction4Mass(), and GetHistoClone().

Double_t AliHFInvMassFitter::FitFunction4Sgn	(	Double_t *	x,
		Double_t *	par
	)

Fit function for the signal

Definition at line 715 of file AliHFInvMassFitter.cxx.

Referenced by CreateSignalFitFunction(), FitFunction4Mass(), and GetHistoClone().

TF1* AliHFInvMassFitter::GetBackgroundFullRangeFunc ( )

inline

Definition at line 117 of file AliHFInvMassFitter.h.

TF1* AliHFInvMassFitter::GetBackgroundRecalcFunc ( )

inline

Definition at line 118 of file AliHFInvMassFitter.h.

Referenced by ProjectCombinHFAndFit(), and WriteFitFunctionsToFile().

TF1* AliHFInvMassFitter::GetBkgPlusReflFunc ( )

inline

Definition at line 119 of file AliHFInvMassFitter.h.

Referenced by WriteFitFunctionsToFile().

Double_t AliHFInvMassFitter::GetChiSquare ( ) const

inline

Definition at line 122 of file AliHFInvMassFitter.h.

Double_t AliHFInvMassFitter::GetFitProbability ( ) const

inline

Definition at line 130 of file AliHFInvMassFitter.h.

TH1F* AliHFInvMassFitter::GetHistoClone ( ) const

inline

Definition at line 134 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter().

TF1* AliHFInvMassFitter::GetMassFunc ( )

inline

Definition at line 121 of file AliHFInvMassFitter.h.

Referenced by AliHFVnVsMassFitter::MassPrefit(), ProjectCombinHFAndFit(), and WriteFitFunctionsToFile().

Double_t AliHFInvMassFitter::GetMean ( ) const

inline

Definition at line 105 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), AliHFVnVsMassFitter::VnSBPrefit(), and WriteFitInfo().

Double_t AliHFInvMassFitter::GetMeanUncertainty ( ) const

inline

Definition at line 106 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), and WriteFitInfo().

Double_t AliHFInvMassFitter::GetParticlePdgMass ( )

inline

Definition at line 51 of file AliHFInvMassFitter.h.

Double_t AliHFInvMassFitter::GetRawYield ( ) const

inline

Definition at line 103 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), AliHFVnVsMassFitter::MassPrefit(), and WriteFitInfo().

Double_t AliHFInvMassFitter::GetRawYieldBinCounting	(	Double_t &	errRyBC,
		Double_t	nSigma = `3.`,
		Int_t	option = `0`,
		Int_t	pdgCode = `0`
	)		const

Method to compute the signal using inv. mass histo bin counting -> interface method to compute yield in nsigma range around peak pdgCode: if==411,421,413,413 or 4122: range defined based on PDG mass

Definition at line 1086 of file AliHFInvMassFitter.cxx.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), GetHistoClone(), and ProjectCombinHFAndFit().

Double_t AliHFInvMassFitter::GetRawYieldBinCounting	(	Double_t &	errRyBC,
		Double_t	minMass,
		Double_t	maxMass,
		Int_t	option = `0`
	)		const

Method to compute the signal using inv. mass histo bin counting after background subtraction from background fit function option=0: background fit function from 1st fit step (only side bands) option=1: background fit function from 2nd fit step (S+B)

Definition at line 1114 of file AliHFInvMassFitter.cxx.

Double_t AliHFInvMassFitter::GetRawYieldError ( ) const

inline

Definition at line 104 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), and WriteFitInfo().

Double_t AliHFInvMassFitter::GetReducedChiSquare ( ) const

inline

Definition at line 126 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials().

Double_t AliHFInvMassFitter::GetReflOverSig ( ) const

inline

Definition at line 109 of file AliHFInvMassFitter.h.

Referenced by WriteFitInfo().

Double_t AliHFInvMassFitter::GetReflOverSigUncertainty ( ) const

inline

Definition at line 113 of file AliHFInvMassFitter.h.

Referenced by WriteFitInfo().

TH1F * AliHFInvMassFitter::GetResidualsAndPulls	(	TH1 *	hPulls = `0x0`,
		TH1 *	hResidualTrend = `0x0`,
		TH1 *	hPullsTrend = `0x0`,
		Double_t	minrange = `0`,
		Double_t	maxrange = `-1`
	)

fill and return the residual and pull histos

Definition at line 1154 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and ProjectCombinHFAndFit().

Double_t AliHFInvMassFitter::GetSigma ( ) const

inline

Definition at line 107 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), AliHFVnVsMassFitter::VnSBPrefit(), and WriteFitInfo().

Double_t AliHFInvMassFitter::GetSigmaUncertainty ( ) const

inline

Definition at line 108 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), and WriteFitInfo().

TF1* AliHFInvMassFitter::GetSignalFunc ( )

inline

Definition at line 120 of file AliHFInvMassFitter.h.

Referenced by WriteFitFunctionsToFile().

void AliHFInvMassFitter::IncludeSecondGausPeak	(	Double_t	mass,
		Bool_t	fixm,
		Double_t	width,
		Bool_t	fixw
	)

inline

Definition at line 99 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), and AliHFVnVsMassFitter::MassPrefit().

Int_t AliHFInvMassFitter::MassFitter ( Bool_t draw = kTRUE )

Main function to fit the invariant mass distribution returns 0 if the fit fails returns 1 if the fit succeeds returns 2 if there is no signal and the fit is performed with only background

Definition at line 234 of file AliHFInvMassFitter.cxx.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), GetHistoClone(), AliHFVnVsMassFitter::MassPrefit(), and ProjectCombinHFAndFit().

AliHFInvMassFitter& AliHFInvMassFitter::operator= ( const AliHFInvMassFitter & source )

private

Referenced by GetHistoClone().

Bool_t AliHFInvMassFitter::PrepareHighPolFit ( TF1 * fback )

private

Perform intermediate fit steps up to fPolDegreeBkg-1 in case of fit with a polynomial with degree > 2 (fTypeOfFit4Bkg=6)

Definition at line 917 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone(), and MassFitter().

void AliHFInvMassFitter::PrintFunctions ( )

dump the function parameters

Definition at line 1234 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone().

void AliHFInvMassFitter::SetFitFunctions	(	Int_t	fittypeb,
		Int_t	fittypes
	)

inline

Definition at line 41 of file AliHFInvMassFitter.h.

void AliHFInvMassFitter::SetFitOption ( TString opt )

inline

Definition at line 49 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter().

void AliHFInvMassFitter::SetFixFrac2Gaus ( Double_t frac )

inline

Definition at line 75 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), and AliHFVnVsMassFitter::MassPrefit().

void AliHFInvMassFitter::SetFixGaussianMean ( Double_t mean )

inline

Definition at line 62 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter(), AliHFInvMassMultiTrialFit::DoMultiTrials(), and AliHFVnVsMassFitter::MassPrefit().

void AliHFInvMassFitter::SetFixGaussianSigma ( Double_t sigma )

inline

Definition at line 66 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter(), AliHFInvMassMultiTrialFit::DoMultiTrials(), and AliHFVnVsMassFitter::MassPrefit().

void AliHFInvMassFitter::SetFixRatio2GausSigma ( Double_t sigmafrac )

inline

Definition at line 80 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials().

void AliHFInvMassFitter::SetFixReflOverS ( Double_t rovers )

inline

Definition at line 93 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter(), AliHFInvMassMultiTrialFit::DoMultiTrials(), and AliHFVnVsMassFitter::MassPrefit().

void AliHFInvMassFitter::SetFixSecondGaussianSigma ( Double_t sigma )

inline

Definition at line 70 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), and AliHFVnVsMassFitter::MassPrefit().

void AliHFInvMassFitter::SetFixSignalYield ( Double_t yield )

inline

Definition at line 85 of file AliHFInvMassFitter.h.

void AliHFInvMassFitter::SetHistogramFit ( const TH1F * histoToFit )

inline

Definition at line 33 of file AliHFInvMassFitter.h.

void AliHFInvMassFitter::SetInitialFrac2Gaus ( Double_t frac )

inline

Definition at line 60 of file AliHFInvMassFitter.h.

Referenced by AliHFVnVsMassFitter::MassPrefit(), and SetFixFrac2Gaus().

void AliHFInvMassFitter::SetInitialGaussianMean ( Double_t mean )

inline

Definition at line 57 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter(), AliHFInvMassMultiTrialFit::DoMultiTrials(), AliHFVnVsMassFitter::MassPrefit(), and SetFixGaussianMean().

void AliHFInvMassFitter::SetInitialGaussianSigma ( Double_t sigma )

inline

Definition at line 58 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter(), AliHFInvMassMultiTrialFit::DoMultiTrials(), AliHFVnVsMassFitter::MassPrefit(), and SetFixGaussianSigma().

void AliHFInvMassFitter::SetInitialRatio2GausSigma ( Double_t fracsigma )

inline

Definition at line 61 of file AliHFInvMassFitter.h.

Referenced by SetFixRatio2GausSigma().

void AliHFInvMassFitter::SetInitialReflOverS ( Double_t rovers )

inline

Definition at line 92 of file AliHFInvMassFitter.h.

Referenced by AliHFVnVsMassFitter::MassPrefit(), and SetFixReflOverS().

void AliHFInvMassFitter::SetInitialSecondGaussianSigma ( Double_t sigma )

inline

Definition at line 59 of file AliHFInvMassFitter.h.

Referenced by AliHFVnVsMassFitter::MassPrefit(), and SetFixSecondGaussianSigma().

void AliHFInvMassFitter::SetNSigma4SideBands ( Double_t ns = 4. )

inline

Definition at line 88 of file AliHFInvMassFitter.h.

void AliHFInvMassFitter::SetNumberOfParams ( )

private

Configure number of parameters of fit functions

Definition at line 180 of file AliHFInvMassFitter.cxx.

Referenced by AliHFInvMassFitter(), CreateBackgroundFitFunction(), CreateBackgroundPlusReflectionFunction(), CreateSignalFitFunction(), CreateTotalFitFunction(), GetHistoClone(), SetFitFunctions(), and SetPolDegreeForBackgroundFit().

void AliHFInvMassFitter::SetParticlePdgMass ( Double_t mass )

inline

Definition at line 50 of file AliHFInvMassFitter.h.

void AliHFInvMassFitter::SetPolDegreeForBackgroundFit ( Int_t deg )

inline

Definition at line 52 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter(), AliHFInvMassMultiTrialFit::DoMultiTrials(), and AliHFVnVsMassFitter::MassPrefit().

void AliHFInvMassFitter::SetRangeFit	(	Double_t	minvalue,
		Double_t	maxvalue
	)

inline

Definition at line 38 of file AliHFInvMassFitter.h.

void AliHFInvMassFitter::SetSmoothReflectionTemplate ( Bool_t opt )

inline

Definition at line 97 of file AliHFInvMassFitter.h.

TH1F * AliHFInvMassFitter::SetTemplateReflections	(	const TH1 *	h,
		TString	opt,
		Double_t	minRange,
		Double_t	maxRange
	)

Method to create the reflection invariant mass distributions from MC templates option could be: "template" use MC histograms "1gaus" ot "singlegaus" single gaussian function fit to MC templates "2gaus" ot "doublegaus" double gaussian function fit to MC templates "pol3" 3rd order polynomial fit to MC templates "pol6" 6th order polynomial fit to MC templates

Definition at line 984 of file AliHFInvMassFitter.cxx.

Referenced by ConfigureFitter(), AliHFInvMassMultiTrialFit::DoMultiTrials(), AliHFVnVsMassFitter::MassPrefit(), and SetNSigma4SideBands().

void AliHFInvMassFitter::SetUseChi2Fit ( )

inline

Definition at line 48 of file AliHFInvMassFitter.h.

Referenced by ConfigureFitter(), and AliHFInvMassMultiTrialFit::DoMultiTrials().

void AliHFInvMassFitter::SetUseLikelihoodFit ( )

inline

Definition at line 46 of file AliHFInvMassFitter.h.

Referenced by AliHFVnVsMassFitter::MassPrefit().

void AliHFInvMassFitter::SetUseLikelihoodWithWeightsFit ( )

inline

Definition at line 47 of file AliHFInvMassFitter.h.

void AliHFInvMassFitter::Signal	(	Double_t	nOfSigma,
		Double_t &	signal,
		Double_t &	errsignal
	)		const

virtual

Return signal integral in mean +- n sigma

Definition at line 816 of file AliHFInvMassFitter.cxx.

Referenced by GetHistoClone().

void AliHFInvMassFitter::Signal	(	Double_t	min,
		Double_t	max,
		Double_t &	signal,
		Double_t &	errsignal
	)		const

virtual

Return signal integral in a range

Definition at line 827 of file AliHFInvMassFitter.cxx.

void AliHFInvMassFitter::Significance	(	Double_t	nOfSigma,
		Double_t &	significance,
		Double_t &	errsignificance
	)		const

Return significance in mean +- n sigma

Definition at line 886 of file AliHFInvMassFitter.cxx.

Referenced by AliHFInvMassMultiTrialFit::DoMultiTrials(), DrawHere(), and GetHistoClone().

void AliHFInvMassFitter::Significance	(	Double_t	min,
		Double_t	max,
		Double_t &	significance,
		Double_t &	errsignificance
	)		const

Return significance integral in a range

Definition at line 899 of file AliHFInvMassFitter.cxx.

Member Data Documentation

TF1* AliHFInvMassFitter::fBkgFunc

private

background fit function (1st step, side bands only)

Definition at line 204 of file AliHFInvMassFitter.h.

Referenced by Background(), CheckForSignal(), CreateBackgroundPlusReflectionFunction(), CreateTotalFitFunction(), DrawHere(), GetBackgroundFullRangeFunc(), GetRawYieldBinCounting(), MassFitter(), PrintFunctions(), and ~AliHFInvMassFitter().

TF1* AliHFInvMassFitter::fBkgFuncRefit

private

background fit function (1st step, extended in peak region)

Definition at line 205 of file AliHFInvMassFitter.h.

Referenced by Background(), DrawHere(), GetBackgroundRecalcFunc(), GetRawYieldBinCounting(), MassFitter(), PrintFunctions(), and ~AliHFInvMassFitter().

TF1* AliHFInvMassFitter::fBkgFuncSb

private

Signal fit function.

Definition at line 203 of file AliHFInvMassFitter.h.

Referenced by MassFitter(), and ~AliHFInvMassFitter().

TF1* AliHFInvMassFitter::fBkRFunc

private

fit function for reflections

Definition at line 214 of file AliHFInvMassFitter.h.

Referenced by DrawHere(), GetBkgPlusReflFunc(), MassFitter(), PrintFunctions(), and ~AliHFInvMassFitter().

Int_t AliHFInvMassFitter::fCurPolDegreeBkg

private

degree of polynomial expansion for back fit (option 6 for back)

Definition at line 179 of file AliHFInvMassFitter.h.

Referenced by BackFitFuncPolHelper(), and PrepareHighPolFit().

TString AliHFInvMassFitter::fFitOption

private

number of sigmas to veto the signal peak

Definition at line 199 of file AliHFInvMassFitter.h.

Referenced by MassFitter(), SetFitOption(), SetUseChi2Fit(), SetUseLikelihoodFit(), and SetUseLikelihoodWithWeightsFit().

Bool_t AliHFInvMassFitter::fFixedFrac2Gaus

private

initialization for fraction of 2nd gaussian in case of k2Gaus or k2GausSigmaRatioPar

Definition at line 192 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetFixFrac2Gaus().

Bool_t AliHFInvMassFitter::fFixedMean

private

signal second gaussian sigma in case of k2Gaus

Definition at line 187 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetFixGaussianMean().

Bool_t AliHFInvMassFitter::fFixedRatio2GausSigma

private

initialization for ratio between two gaussian sigmas in case of k2GausSigmaRatioPar

Definition at line 194 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetFixRatio2GausSigma().

Double_t AliHFInvMassFitter::fFixedRawYield

private

switch for fix Sigma of second gaussian in case of k2Gaus

Definition at line 190 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetFixSignalYield().

Bool_t AliHFInvMassFitter::fFixedSigma

private

switch for fix mean of gaussian

Definition at line 188 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetFixGaussianSigma().

Bool_t AliHFInvMassFitter::fFixedSigma2Gaus

private

switch for fix Sigma of gaussian

Definition at line 189 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetFixSecondGaussianSigma().

Bool_t AliHFInvMassFitter::fFixRflOverSig

private

reflection/signal

Definition at line 209 of file AliHFInvMassFitter.h.

Referenced by CreateReflectionFunction(), and SetFixReflOverS().

Bool_t AliHFInvMassFitter::fFixSecMass

private

width of the 2nd peak

Definition at line 219 of file AliHFInvMassFitter.h.

Referenced by CreateSecondPeakFunction(), and IncludeSecondGausPeak().

Bool_t AliHFInvMassFitter::fFixSecWidth

private

flag to fix the position of the 2nd peak

Definition at line 220 of file AliHFInvMassFitter.h.

Referenced by CreateSecondPeakFunction(), and IncludeSecondGausPeak().

Double_t AliHFInvMassFitter::fFrac2Gaus

private

initialization for wa yield

Definition at line 191 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetInitialFrac2Gaus().

TH1F* AliHFInvMassFitter::fHistoInvMass

private

Definition at line 174 of file AliHFInvMassFitter.h.

Referenced by AliHFInvMassFitter(), Background(), CheckForSignal(), DrawHere(), FitFunction4Refl(), FitFunction4Sgn(), GetHistoClone(), GetRawYieldBinCounting(), GetResidualsAndPulls(), MassFitter(), PrepareHighPolFit(), SetHistogramFit(), Signal(), and ~AliHFInvMassFitter().

TH1F* AliHFInvMassFitter::fHistoTemplRfl

private

switch for fix refl/signal

Definition at line 210 of file AliHFInvMassFitter.h.

Referenced by FitFunction4Refl(), SetTemplateReflections(), and ~AliHFInvMassFitter().

Double_t AliHFInvMassFitter::fMass

private

signal fit func

Definition at line 182 of file AliHFInvMassFitter.h.

Referenced by BackFitFuncPolHelper(), Background(), CreateSignalFitFunction(), FitFunction4Bkg(), GetMean(), GetRawYieldBinCounting(), MassFitter(), PrepareHighPolFit(), SetInitialGaussianMean(), Signal(), and Significance().

Double_t AliHFInvMassFitter::fMassErr

private

signal gaussian mean value

Definition at line 183 of file AliHFInvMassFitter.h.

Referenced by GetMeanUncertainty(), and MassFitter().

Double_t AliHFInvMassFitter::fMassParticle

private

help variable

Definition at line 180 of file AliHFInvMassFitter.h.

Referenced by BackFitFuncPolHelper(), FitFunction4Bkg(), GetParticlePdgMass(), and SetParticlePdgMass().

Double_t AliHFInvMassFitter::fMaxMass

private

lower mass limit

Definition at line 176 of file AliHFInvMassFitter.h.

Referenced by CreateBackgroundFitFunction(), CreateBackgroundPlusReflectionFunction(), CreateReflectionFunction(), CreateSecondPeakFunction(), CreateSignalFitFunction(), CreateTotalFitFunction(), DrawHere(), FitFunction4Bkg(), FitFunction4Refl(), GetResidualsAndPulls(), MassFitter(), PrepareHighPolFit(), and SetRangeFit().

Double_t AliHFInvMassFitter::fMinMass

private

histogram to fit

Definition at line 175 of file AliHFInvMassFitter.h.

Referenced by CreateBackgroundFitFunction(), CreateBackgroundPlusReflectionFunction(), CreateReflectionFunction(), CreateSecondPeakFunction(), CreateSignalFitFunction(), CreateTotalFitFunction(), DrawHere(), FitFunction4Bkg(), FitFunction4Refl(), GetResidualsAndPulls(), MassFitter(), PrepareHighPolFit(), and SetRangeFit().

Int_t AliHFInvMassFitter::fNParsBkg

private

fit parameters in signal fit function

Definition at line 196 of file AliHFInvMassFitter.h.

Referenced by CreateBackgroundFitFunction(), CreateBackgroundPlusReflectionFunction(), CreateTotalFitFunction(), DrawHere(), FitFunction4BkgAndRefl(), FitFunction4Mass(), MassFitter(), and SetNumberOfParams().

Int_t AliHFInvMassFitter::fNParsRfl

private

flag use/not use reflections

Definition at line 207 of file AliHFInvMassFitter.h.

Referenced by CreateBackgroundPlusReflectionFunction(), CreateTotalFitFunction(), MassFitter(), and SetNumberOfParams().

Int_t AliHFInvMassFitter::fNParsSec

private

switch off/on second peak (for D+->KKpi in Ds)

Definition at line 216 of file AliHFInvMassFitter.h.

Referenced by CreateTotalFitFunction(), FitFunction4Mass(), MassFitter(), and SetNumberOfParams().

Int_t AliHFInvMassFitter::fNParsSig

private

switch for fixed ratio between two gaussian sigmas in case of k2GausSigmaRatioPar

Definition at line 195 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), CreateTotalFitFunction(), DrawHere(), FitFunction4Mass(), MassFitter(), and SetNumberOfParams().

Double_t AliHFInvMassFitter::fNSigma4SideBands

private

kTRUE = only side bands considered

Definition at line 198 of file AliHFInvMassFitter.h.

Referenced by BackFitFuncPolHelper(), Background(), FitFunction4Bkg(), MassFitter(), and SetNSigma4SideBands().

Bool_t AliHFInvMassFitter::fOnlySideBands

private

fit parameters in background fit function

Definition at line 197 of file AliHFInvMassFitter.h.

Referenced by BackFitFuncPolHelper(), FitFunction4Bkg(), and MassFitter().

Int_t AliHFInvMassFitter::fPolDegreeBkg

private

background fit func

Definition at line 178 of file AliHFInvMassFitter.h.

Referenced by FitFunction4Bkg(), PrepareHighPolFit(), SetNumberOfParams(), and SetPolDegreeForBackgroundFit().

Double_t AliHFInvMassFitter::fRatio2GausSigma

private

switch for fixed fraction of 2nd gaussian in case of k2Gaus or k2GausSigmaRatioPar

Definition at line 193 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetInitialRatio2GausSigma().

Double_t AliHFInvMassFitter::fRawYield

private

L, LW or Chi2.

Definition at line 200 of file AliHFInvMassFitter.h.

Referenced by DrawHere(), GetRawYield(), MassFitter(), Signal(), and Significance().

Double_t AliHFInvMassFitter::fRawYieldErr

private

signal gaussian integral

Definition at line 201 of file AliHFInvMassFitter.h.

Referenced by DrawHere(), GetRawYieldError(), MassFitter(), Signal(), and Significance().

Double_t AliHFInvMassFitter::fRawYieldHelp

private

switch for smoothing of reflection template

Definition at line 212 of file AliHFInvMassFitter.h.

Referenced by FitFunction4Refl(), FitFunction4Sgn(), and MassFitter().

Bool_t AliHFInvMassFitter::fReflections

private

background fit function (2nd step)

Definition at line 206 of file AliHFInvMassFitter.h.

Referenced by CreateTotalFitFunction(), FitFunction4BkgAndRefl(), FitFunction4Mass(), MassFitter(), SetNumberOfParams(), and SetTemplateReflections().

TF1* AliHFInvMassFitter::fRflFunc

private

internal variable for fit with reflections

Definition at line 213 of file AliHFInvMassFitter.h.

Referenced by CreateBackgroundPlusReflectionFunction(), CreateTotalFitFunction(), DrawHere(), GetRawYieldBinCounting(), GetReflOverSig(), GetReflOverSigUncertainty(), MassFitter(), PrintFunctions(), and ~AliHFInvMassFitter().

Double_t AliHFInvMassFitter::fRflOverSig

private

fit parameters in reflection fit function

Definition at line 208 of file AliHFInvMassFitter.h.

Referenced by CreateReflectionFunction(), and SetInitialReflOverS().

TF1* AliHFInvMassFitter::fSecFunc

private

flag to fix the width of the 2nd peak

Definition at line 221 of file AliHFInvMassFitter.h.

Referenced by CreateTotalFitFunction(), DrawHere(), GetRawYieldBinCounting(), MassFitter(), PrintFunctions(), and ~AliHFInvMassFitter().

Double_t AliHFInvMassFitter::fSecMass

private

fit parameters in 2nd peak fit function

Definition at line 217 of file AliHFInvMassFitter.h.

Referenced by CreateSecondPeakFunction(), FitFunction4Bkg(), IncludeSecondGausPeak(), and MassFitter().

Bool_t AliHFInvMassFitter::fSecondPeak

private

fit function for reflections

Definition at line 215 of file AliHFInvMassFitter.h.

Referenced by CreateTotalFitFunction(), FitFunction4Bkg(), FitFunction4Mass(), GetRawYieldBinCounting(), IncludeSecondGausPeak(), MassFitter(), and SetNumberOfParams().

Double_t AliHFInvMassFitter::fSecWidth

private

position of the 2nd peak

Definition at line 218 of file AliHFInvMassFitter.h.

Referenced by CreateSecondPeakFunction(), FitFunction4Bkg(), IncludeSecondGausPeak(), and MassFitter().

TF1* AliHFInvMassFitter::fSigFunc

private

err on signal gaussian integral

Definition at line 202 of file AliHFInvMassFitter.h.

Referenced by CreateTotalFitFunction(), GetSignalFunc(), MassFitter(), Signal(), and ~AliHFInvMassFitter().

Double_t AliHFInvMassFitter::fSigmaSgn

private

unc on signal gaussian mean value

Definition at line 184 of file AliHFInvMassFitter.h.

Referenced by BackFitFuncPolHelper(), Background(), CreateSignalFitFunction(), FitFunction4Bkg(), GetRawYieldBinCounting(), GetSigma(), MassFitter(), PrepareHighPolFit(), SetInitialGaussianSigma(), Signal(), and Significance().

Double_t AliHFInvMassFitter::fSigmaSgn2Gaus

private

unc on signal gaussian sigma

Definition at line 186 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), and SetInitialSecondGaussianSigma().

Double_t AliHFInvMassFitter::fSigmaSgnErr

private

signal gaussian sigma

Definition at line 185 of file AliHFInvMassFitter.h.

Referenced by GetSigmaUncertainty(), and MassFitter().

Bool_t AliHFInvMassFitter::fSmoothRfl

private

histogram with reflection template

Definition at line 211 of file AliHFInvMassFitter.h.

Referenced by FitFunction4Refl(), and SetSmoothReflectionTemplate().

TF1* AliHFInvMassFitter::fTotFunc

private

fit function for second peak

Definition at line 222 of file AliHFInvMassFitter.h.

Referenced by DrawHere(), GetChiSquare(), GetFitProbability(), GetMassFunc(), GetReducedChiSquare(), GetResidualsAndPulls(), MassFitter(), PrintFunctions(), and ~AliHFInvMassFitter().

Int_t AliHFInvMassFitter::fTypeOfFit4Bkg

private

upper mass limit

Definition at line 177 of file AliHFInvMassFitter.h.

Referenced by CreateBackgroundFitFunction(), FitFunction4Bkg(), MassFitter(), SetFitFunctions(), SetNumberOfParams(), and SetPolDegreeForBackgroundFit().

Int_t AliHFInvMassFitter::fTypeOfFit4Sgn

private

pdg value of particle mass

Definition at line 181 of file AliHFInvMassFitter.h.

Referenced by CreateSignalFitFunction(), FitFunction4Sgn(), SetFitFunctions(), SetFixFrac2Gaus(), SetFixRatio2GausSigma(), SetFixSecondGaussianSigma(), and SetNumberOfParams().

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

PWGHF/vertexingHF/AliHFInvMassFitter.h
PWGHF/vertexingHF/AliHFInvMassFitter.cxx

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation