EvtBGL2FF.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#pragma once
 
#include "EvtGenBase/EvtSemiLeptonicFF.hh"
 
class EvtId;
 
class EvtBGL2FF : public EvtSemiLeptonicFF {
 
public:
 
  // 8 parameters a_plus and a_0 of the B -> D l nu BGL form factor expansion at N=3
  EvtBGL2FF(double bglap_0, double bglap_1, double bglap_2, double bglap_3, double bgla0_0, double bgla0_1, double bgla0_2,
            double bgla0_3);
 
  EvtBGL2FF(double bgla_0, double bgla_1, double bglb_0, double bglb_1, double bglc_1, double bglc_2);
 
  // from arxiv:1606.08030; t = q^2, mass is the mass of the meson, fp and f0 are the two B -> D l nu form factors
  void getscalarff(EvtId parent, EvtId daught,
                   double t, double mass, double* fp, double* f0);
 
  void getvectorff(EvtId, EvtId, double, double, double*,
                   double*, double*, double*);
 
  void gettensorff(EvtId, EvtId, double, double, double*,
                   double*, double*, double*);
 
  void getbaryonff(EvtId, EvtId, double, double, double*,
                   double*, double*, double*);
 
  void getdiracff(EvtId, EvtId, double, double, double*, double*,
                  double*, double*, double*, double*);
 
  void getraritaff(EvtId, EvtId, double, double, double*, double*,
                   double*, double*, double*, double*, double*, double*);
 
private:
 
 
  double ap_0{0};
 
  double ap_1{0};
 
  double ap_2{0};
 
  double ap_3{0};
 
 
 
  double a0_0{0};
 
  double a0_1{0};
 
  double a0_2{0};
 
  double a0_3{0};
 
};