include/EvtGenModels/Evtbs2llGammaFFMNT.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
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0020
0021 #ifndef EVTBS2LLGAMMAFFMNT_HH
0022 #define EVTBS2LLGAMMAFFMNT_HH
0023
0024 #include "EvtGenModels/Evtbs2llGammaFF.hh"
0025
0026 class EvtId;
0027
0028 class EvtComplex;
0029
0030 // Description: Form factors for rare radiative leptonic B-decays
0031 //              according to the papers:
0032 //              1) F.Kruger, D.Melikhov,  Phys. Rev. D67, 034002, 2003.
0033 //              2) D.Melikhov, N.Nikitin, Phys. Rev. D70, 114028, 2004.
0034 //              3) I.Balakireva, D.Melikhov, N.Nikitin, D.Tlisov,
0035 //                                           e-Print: arXiv:0911.0605 [hep-ph].
0036 // Description: Form-factors for B_q -> gamma transitions,  q={d,s}
0037 //              according to the papers:
0038 //              1) F.Kruger, D.Melikhov,  Phys. Rev. D67, 034002, 2003.
0039 //              2) D.Melikhov, N.Nikitin, Phys. Rev. D70, 114028, 2004.
0040 //              3) I.Balakireva, D.Melikhov, N.Nikitin, D.Tlisov,
0041 //                                        Phys. Rev. D81, 054024, 2010.
0042
0043 class Evtbs2llGammaFFMNT : public Evtbs2llGammaFF {
0044   public:
0045     Evtbs2llGammaFFMNT();
0046
0047     void getPhotonFF( int decay_id, double fb, EvtId parent, double q2,
0048                       double M1, double mb, double mq, EvtComplex c7gam,
0049                       EvtComplex a1, EvtComplex lambda_qu, EvtComplex lambda_qc,
0050                       EvtComplex& Fv, EvtComplex& Fa, EvtComplex& Ftv,
0051                       EvtComplex& Fta ) override;
0052
0053     double getQuarkMass( int i ) override;
0054 };
0055
0056 #endif