EvtSVSCPiso.hh

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#ifndef EVTSVSCPISO_HH
#define EVTSVSCPISO_HH
 
#include "EvtGenBase/EvtComplex.hh"
#include "EvtGenBase/EvtDecayAmp.hh"
 
class EvtParticle;
 
// Description: Routine to decay scalar -> vectors scalar
//              with CP violation and isospin amplitudes.
//              More specifically, it is indended to handle
//              decays like B->rho pi and B->a1 pi.
 
class EvtSVSCPiso : public EvtDecayAmp {
  public:
    std::string getName() const override;
    EvtDecayBase* clone() const override;
 
    void init() override;
    void initProbMax() override;
 
    void decay( EvtParticle* p ) override;
 
  private:
    // Amplitude coefficients
    EvtComplex m_Tp0, m_Tp0_bar, m_T0p, m_T0p_bar;
    EvtComplex m_Tpm, m_Tpm_bar, m_Tmp, m_Tmp_bar;
    EvtComplex m_P1, m_P1_bar, m_P0, m_P0_bar;
 
    // Amplitudes
    EvtComplex m_A_f, m_Abar_f;
    EvtComplex m_A_fbar, m_Abar_fbar;
    EvtComplex m_Apm, m_Apm_bar, m_Amp, m_Amp_bar;
    // Charged mode flag
    int m_charged{ 0 };
 
    // Set amplitude coeffs from decay model pars
    void setAmpCoeffs();
    // Calculate amplitude terms
    void calcAmpTerms();
};
 
#endif