EvtBtoXsnunu_FERMI.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/EvtDecayIncoherent.hh"
#include "EvtGenBase/EvtParticle.hh"
#include <string>
 
namespace Belle2 {
  class EvtBtoXsnunu_FERMI : public  EvtDecayIncoherent {
 
  public:
 
    EvtBtoXsnunu_FERMI() {}
 
    virtual ~EvtBtoXsnunu_FERMI();
 
    std::string getName();
 
    EvtDecayBase* clone();
 
    void initProbMax();
 
    void init();
 
    void decay(EvtParticle* p);
 
    double dGdsbProb(double _sb);
 
    double FermiMomentum(double pf);
 
    double FermiMomentumProb(double pb, double pf);
 
  private:
    double m_dGdsbProbMax{0.0};
 
    double m_ms{0.2};
 
    double m_mq{0.0};
 
    double m_pf{0.461};
 
    double m_mxmin{1.1};
 
    double m_mb_prob{4.8};
 
    double m_ms_prob{0.2};
 
  };
 
} // Belle 2 Namespace