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Reference Guide
RooCBShape.h
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitModels *
4  * File: $Id: RooCBShape.h,v 1.11 2007/07/12 20:30:49 wouter Exp $
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 #ifndef ROO_CB_SHAPE
17 #define ROO_CB_SHAPE
18 
19 #include "RooAbsPdf.h"
20 #include "RooRealProxy.h"
21 
22 class RooRealVar;
23 
24 class RooCBShape : public RooAbsPdf {
25 public:
26  RooCBShape() {} ;
27  RooCBShape(const char *name, const char *title, RooAbsReal& _m,
28  RooAbsReal& _m0, RooAbsReal& _sigma,
29  RooAbsReal& _alpha, RooAbsReal& _n);
30 
31  RooCBShape(const RooCBShape& other, const char* name = 0);
32  virtual TObject* clone(const char* newname) const { return new RooCBShape(*this,newname); }
33 
34  inline virtual ~RooCBShape() { }
35 
36  virtual Int_t getAnalyticalIntegral( RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0 ) const;
37  virtual Double_t analyticalIntegral( Int_t code, const char* rangeName=0 ) const;
38 
39  // Optimized accept/reject generator support
40  virtual Int_t getMaxVal(const RooArgSet& vars) const ;
41  virtual Double_t maxVal(Int_t code) const ;
42 
43 protected:
44 
45  Double_t ApproxErf(Double_t arg) const ;
46 
52 
53  Double_t evaluate() const;
54 
55 private:
56 
57  ClassDef(RooCBShape,1) // Crystal Ball lineshape PDF
58 };
59 
60 #endif
RooRealProxy m
Definition: RooCBShape.h:47
virtual ~RooCBShape()
Definition: RooCBShape.h:34
Double_t evaluate() const
Definition: RooCBShape.cxx:79
RooRealProxy m0
Definition: RooCBShape.h:48
virtual Double_t analyticalIntegral(Int_t code, const char *rangeName=0) const
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral. ...
Definition: RooCBShape.cxx:108
int Int_t
Definition: RtypesCore.h:41
P.d.f implementing the Crystal Ball line shape.
Definition: RooCBShape.h:24
#define ClassDef(name, id)
Definition: Rtypes.h:297
virtual Int_t getMaxVal(const RooArgSet &vars) const
Advertise that we know the maximum of self for given (m0,alpha,n,sigma)
Definition: RooCBShape.cxx:175
virtual Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=0) const
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported...
Definition: RooCBShape.cxx:98
RooRealVar represents a fundamental (non-derived) real valued object.
Definition: RooRealVar.h:36
Double_t ApproxErf(Double_t arg) const
Definition: RooCBShape.cxx:43
virtual Double_t maxVal(Int_t code) const
Return maximum value for set of observables identified by code assigned in getMaxVal.
Definition: RooCBShape.cxx:187
double Double_t
Definition: RtypesCore.h:55
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:53
RooRealProxy sigma
Definition: RooCBShape.h:49
Mother of all ROOT objects.
Definition: TObject.h:37
RooRealProxy alpha
Definition: RooCBShape.h:50
RooAbsPdf is the abstract interface for all probability density functions The class provides hybrid a...
Definition: RooAbsPdf.h:41
RooRealProxy n
Definition: RooCBShape.h:51
RooRealProxy is the concrete proxy for RooAbsReal objects A RooRealProxy is the general mechanism to ...
Definition: RooRealProxy.h:23
virtual TObject * clone(const char *newname) const
Definition: RooCBShape.h:32