include/root/RooBMixDecay.h

0001 /*****************************************************************************
0002  * Project: RooFit                                                           *
0003  * Package: RooFitModels                                                     *
0004  *    File: $Id: RooBMixDecay.h,v 1.14 2007/05/11 09:13:07 verkerke Exp $
0005  * Authors:                                                                  *
0006  *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
0007  *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
0008  *                                                                           *
0009  * Copyright (c) 2000-2005, Regents of the University of California          *
0010  *                          and Stanford University. All rights reserved.    *
0011  *                                                                           *
0012  * Redistribution and use in source and binary forms,                        *
0013  * with or without modification, are permitted according to the terms        *
0014  * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
0015  *****************************************************************************/
0016 #ifndef ROO_BMIX_DECAY
0017 #define ROO_BMIX_DECAY
0018
0019 #include "RooAbsAnaConvPdf.h"
0020 #include "RooRealProxy.h"
0021 #include "RooCategoryProxy.h"
0022
0023 class RooBMixDecay : public RooAbsAnaConvPdf {
0024 public:
0025
0026   enum DecayType { SingleSided, DoubleSided, Flipped };
0027
0028   // Constructors, assignment etc
0029   inline RooBMixDecay() { }
0030   RooBMixDecay(const char *name, const char *title,
0031           RooRealVar& t, RooAbsCategory& mixState, RooAbsCategory& tagFlav,
0032           RooAbsReal& tau, RooAbsReal& dm,
0033           RooAbsReal& mistag, RooAbsReal& delMistag, const RooResolutionModel& model,
0034           DecayType type=DoubleSided) ;
0035
0036   RooBMixDecay(const RooBMixDecay& other, const char* name=nullptr);
0037   TObject* clone(const char* newname) const override { return new RooBMixDecay(*this,newname) ; }
0038
0039   double coefficient(Int_t basisIndex) const override ;
0040
0041   Int_t getCoefAnalyticalIntegral(Int_t coef, RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=nullptr) const override ;
0042   double coefAnalyticalIntegral(Int_t coef, Int_t code, const char* rangeName=nullptr) const override ;
0043
0044   Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, bool staticInitOK=true) const override;
0045   void initGenerator(Int_t code) override ;
0046   void generateEvent(Int_t code) override;
0047
0048   void doEval(RooFit::EvalContext &) const override;
0049   inline bool canComputeBatchWithCuda() const override { return true; }
0050
0051 protected:
0052
0053   DecayType        _type ;
0054   RooRealProxy     _mistag ;
0055   RooRealProxy     _delMistag ;
0056   RooCategoryProxy _mixState ;
0057   RooCategoryProxy _tagFlav ;
0058   RooRealProxy     _tau ;
0059   RooRealProxy     _dm ;
0060   RooRealProxy     _t ;
0061   Int_t _basisExp ;
0062   Int_t _basisCos ;
0063
0064   double _genMixFrac ;   //! do not persist
0065   double _genFlavFrac ;  //!
0066   double _genFlavFracMix ;   //!
0067   double _genFlavFracUnmix ; //!
0068
0069   ClassDefOverride(RooBMixDecay,1) // B Mixing decay PDF
0070 };
0071
0072 #endif