EvtVub.hh

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#ifndef EVTVUB_HH
#define EVTVUB_HH
 
#include "EvtGenBase/EvtDecayIncoherent.hh"
 
#include "EvtGenModels/EvtVubdGamma.hh"
 
#include <memory>
#include <vector>
 
class EvtParticle;
 
// Description:
// Class to generate inclusive B to X_u l nu decays according to various
// decay models. Implemtented are ACCM, parton-model and a QCD model.
 
class EvtVub : public EvtDecayIncoherent {
  public:
    std::string getName() const override;
 
    EvtDecayBase* clone() const override;
 
    void initProbMax() override;
 
    void init() override;
 
    void decay( EvtParticle* p ) override;
 
  private:
    double m_mb;        // the b-quark pole mass in GeV (try 4.65 to 4.9)
    double m_a;         // Parameter for the Fermi Motion (1.29 is good)
    double m_alphas;    // Strong Coupling at m_b (around 0.24)
    double m_dGMax;     // max dGamma*p2 value;
    int m_nbins;
    int m_storeQplus;
    std::vector<double> m_masses;
    std::vector<double> m_weights;
 
    std::unique_ptr<EvtVubdGamma> m_dGamma;    // calculates the decay rate
    double findPFermi();
    std::vector<double> m_pf;
};
 
#endif