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RooBreitWigner.h
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitModels *
4 * File: $Id: RooBreitWigner.h,v 1.9 2007/07/12 20:30:49 wouter Exp $
5 * Authors: *
6 * AS, Abi Soffer, Colorado State University, abi@slac.stanford.edu *
7 * TS, Thomas Schietinger, SLAC, schieti@slac.stanford.edu *
8 * *
9 * Copyright (c) 2000-2005, Regents of the University of California *
10 * Colorado State University *
11 * and Stanford University. All rights reserved. *
12 * *
13 * Redistribution and use in source and binary forms, *
14 * with or without modification, are permitted according to the terms *
15 * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
16 *****************************************************************************/
17#ifndef ROO_BREITWIGNER
18#define ROO_BREITWIGNER
19
20#include "RooAbsPdf.h"
21#include "RooRealProxy.h"
22
23class RooRealVar;
24
25class RooBreitWigner : public RooAbsPdf {
26public:
28 RooBreitWigner(const char *name, const char *title,
29 RooAbsReal& _x, RooAbsReal& _mean, RooAbsReal& _width);
30 RooBreitWigner(const RooBreitWigner& other, const char* name=0) ;
31 virtual TObject* clone(const char* newname) const { return new RooBreitWigner(*this,newname); }
32 inline virtual ~RooBreitWigner() { }
33
34 Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
35 Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const ;
36
37protected:
38
42
43 Double_t evaluate() const ;
45
46// void initGenerator();
47// Int_t generateDependents();
48
49private:
50
51 ClassDef(RooBreitWigner,1) // Breit Wigner PDF
52};
53
54#endif
int Int_t
Definition: RtypesCore.h:45
double Double_t
Definition: RtypesCore.h:59
#define ClassDef(name, id)
Definition: Rtypes.h:325
char name[80]
Definition: TGX11.cxx:110
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:61
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:35
Class RooBreitWigner is a RooAbsPdf implementation that models a non-relativistic Breit-Wigner shape.
Double_t evaluate() const
Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported.
RooSpan< double > evaluateSpan(RooBatchCompute::RunContext &evalData, const RooArgSet *normSet) const
Compute multiple values of BreitWigner distribution.
RooRealProxy width
virtual TObject * clone(const char *newname) const
virtual ~RooBreitWigner()
RooRealProxy mean
Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
RooRealProxy x
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:39
A simple container to hold a batch of data values.
Definition: RooSpan.h:34
Mother of all ROOT objects.
Definition: TObject.h:37
This struct enables passing computation data around between elements of a computation graph.
Definition: RunContext.h:31