RooFitFunctions Namespace Reference

Factories for the custom photopeak PDF components. More...

Functions
RooAbsPdf *	MakeGaussian (const TString &name, RooRealVar &x, RooRealVar &mu, RooRealVar &sigma)
	Build a Gaussian component.
RooAbsPdf *	MakeStepShelf (const TString &name, RooRealVar &x, RooRealVar &mu, RooRealVar &sigma)
	Build a StepShelf component.
RooAbsPdf *	MakeLowExpTail (const TString &name, RooRealVar &x, RooRealVar &mu, RooRealVar &sigma, RooRealVar &tau_ratio)
	Build a LowExpTail component.
RooAbsPdf *	MakeLowLinTail (const TString &name, RooRealVar &x, RooRealVar &mu, RooRealVar &sigma, RooRealVar &slope)
	Build a LowLinTail component.
RooAbsPdf *	MakeHighExpTail (const TString &name, RooRealVar &x, RooRealVar &mu, RooRealVar &sigma, RooRealVar &tau_ratio)
	Build a HighExpTail component.
RooAbsPdf *	MakeLinearBackground (const TString &name, RooRealVar &x, RooRealVar &slope)
	Build a linear background component.

Detailed Description

Factories for the custom photopeak PDF components.

Thin wrappers over the classes in RooFitPhotopeakPdfs.hpp, for building a model by hand instead of going through RooFitUtils.

Note

Every factory returns a heap-allocated PDF that the caller owns. The PDF holds references to the variables passed in, so those must outlive it.

Function Documentation

MakeGaussian()

RooAbsPdf * RooFitFunctions::MakeGaussian	(	const TString &	name,
		RooRealVar &	x,
		RooRealVar &	mu,
		RooRealVar &	sigma )

Build a Gaussian component.

Parameters

name	RooFit object name, unique within the workspace.
x	Observable.
mu	Peak centroid.
sigma	Gaussian resolution.

Returns

A newly allocated PDF; the caller owns it.

Definition at line 8 of file RooFitUtils.cpp.

Referenced by RooFitUtils::FitDoublePeak().

MakeHighExpTail()

RooAbsPdf * RooFitFunctions::MakeHighExpTail	(	const TString &	name,
		RooRealVar &	x,
		RooRealVar &	mu,
		RooRealVar &	sigma,
		RooRealVar &	tau_ratio )

Build a HighExpTail component.

Parameters

name	RooFit object name, unique within the workspace.
x	Observable.
mu	Peak centroid.
sigma	Gaussian resolution.
tau_ratio	Decay constant in units of sigma.

Returns

A newly allocated PDF; the caller owns it.

Definition at line 30 of file RooFitUtils.cpp.

Referenced by RooFitUtils::FitDoublePeak().

MakeLinearBackground()

RooAbsPdf * RooFitFunctions::MakeLinearBackground	(	const TString &	name,
		RooRealVar &	x,
		RooRealVar &	slope )

Build a linear background component.

Parameters

name	RooFit object name, unique within the workspace.
x	Observable.
slope	Background slope; fix it at zero for a flat background.

Returns

A newly allocated PDF; the caller owns it.

Definition at line 36 of file RooFitUtils.cpp.

MakeLowExpTail()

RooAbsPdf * RooFitFunctions::MakeLowExpTail	(	const TString &	name,
		RooRealVar &	x,
		RooRealVar &	mu,
		RooRealVar &	sigma,
		RooRealVar &	tau_ratio )

Build a LowExpTail component.

Parameters

name	RooFit object name, unique within the workspace.
x	Observable.
mu	Peak centroid.
sigma	Gaussian resolution.
tau_ratio	Decay constant in units of sigma.

Returns

A newly allocated PDF; the caller owns it.

Definition at line 18 of file RooFitUtils.cpp.

Referenced by RooFitUtils::FitDoublePeak().

MakeLowLinTail()

RooAbsPdf * RooFitFunctions::MakeLowLinTail	(	const TString &	name,
		RooRealVar &	x,
		RooRealVar &	mu,
		RooRealVar &	sigma,
		RooRealVar &	slope )

Build a LowLinTail component.

Parameters

name	RooFit object name, unique within the workspace.
x	Observable.
mu	Peak centroid.
sigma	Gaussian resolution.
slope	Slope of the linear tail factor.

Returns

A newly allocated PDF; the caller owns it.

Definition at line 24 of file RooFitUtils.cpp.

Referenced by RooFitUtils::FitDoublePeak().

MakeStepShelf()

RooAbsPdf * RooFitFunctions::MakeStepShelf	(	const TString &	name,
		RooRealVar &	x,
		RooRealVar &	mu,
		RooRealVar &	sigma )

Build a StepShelf component.

Parameters

name	RooFit object name, unique within the workspace.
x	Observable.
mu	Peak centroid.
sigma	Gaussian resolution.

Returns

A newly allocated PDF; the caller owns it.

Definition at line 13 of file RooFitUtils.cpp.

Referenced by RooFitUtils::FitDoublePeak().