include/EvtGenModels/EvtBToDiBaryonlnupQCDFF.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
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0020
0021 #ifndef EVTBTODIBARYONLNUPQCDFF_HH
0022 #define EVTBTODIBARYONLNUPQCDFF_HH
0023
0024 class EvtParticle;
0025 #include <vector>
0026
0027 // Description: Module for computation of B->ppbar form factors according
0028 // to pQCD counting rules, see arXiv:1107.0801.
0029
0030 class EvtBToDiBaryonlnupQCDFF {
0031   public:
0032     class FormFactors final {
0033       public:
0034         double F1, F2, F3, F4, F5;
0035         double G1, G2, G3, G4, G5;
0036     };
0037
0038     EvtBToDiBaryonlnupQCDFF();
0039
0040     EvtBToDiBaryonlnupQCDFF( std::vector<double>& DParameters );
0041
0042     void getDiracFF( EvtParticle* parent, double dibaryonMass,
0043                      EvtBToDiBaryonlnupQCDFF::FormFactors& FF ) const;
0044
0045     void getRaritaFF( EvtParticle* parent, double dibaryonMass,
0046                       EvtBToDiBaryonlnupQCDFF::FormFactors& FF ) const;
0047
0048     void getFF( EvtParticle* parent, double dibaryonMass,
0049                 EvtBToDiBaryonlnupQCDFF::FormFactors& FF ) const;
0050
0051   private:
0052     std::vector<double> DPars;
0053     int nDPars;
0054 };
0055
0056 #endif