EvtD0gammaDalitz.hh

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#ifndef __EVTD0GAMMADALITZ_HH__
#define __EVTD0GAMMADALITZ_HH__
 
#include "EvtGenBase/EvtCyclic3.hh"
#include "EvtGenBase/EvtDalitzReso.hh"
#include "EvtGenBase/EvtDecayAmp.hh"
#include "EvtGenBase/EvtFlatte.hh"
#include "EvtGenBase/EvtSpinType.hh"
 
#include <vector>
 
class EvtParticle;
 
class EvtD0gammaDalitz : public EvtDecayAmp {
  private:
    int m_d1;
    int m_d2;
    int m_d3;
 
    bool m_isKsPiPi;
 
    // Useful constants.
    static const EvtSpinType::spintype& m_SCALAR;
    static const EvtSpinType::spintype& m_VECTOR;
    static const EvtSpinType::spintype& m_TENSOR;
 
    static const EvtDalitzReso::CouplingType& m_EtaPic;
    static const EvtDalitzReso::CouplingType& m_PicPicKK;
 
    static const EvtDalitzReso::NumType& m_RBW;
    static const EvtDalitzReso::NumType& m_GS;
    static const EvtDalitzReso::NumType& m_KMAT;
 
    static const EvtCyclic3::Pair& m_AB;
    static const EvtCyclic3::Pair& m_AC;
    static const EvtCyclic3::Pair& m_BC;
 
    // Values to be read or computed based on values in the evt.pdl file.
    // IDs of the relevant particles.
    EvtId m_BP;
    EvtId m_BM;
    EvtId m_B0;
    EvtId m_B0B;
    EvtId m_D0;
    EvtId m_D0B;
    EvtId m_KM;
    EvtId m_KP;
    EvtId m_K0;
    EvtId m_K0B;
    EvtId m_KL;
    EvtId m_KS;
    EvtId m_PIM;
    EvtId m_PIP;
 
    // Flavor of the B mother.
    EvtId m_bFlavor;
 
    // Masses of the relevant particles.
    double m_mD0;
    double m_mKs;
    double m_mPi;
    double m_mK;
 
    void readPDGValues();
    void reportInvalidAndExit() const;
 
    EvtComplex dalitzKsPiPi( const EvtDalitzPoint& point ) const;
    EvtComplex dalitzKsKK( const EvtDalitzPoint& point ) const;
 
  public:
    std::string getName() const override;
    EvtDecayBase* clone() const override;
 
    void init() override;
    void initProbMax() override;
 
    void decay( EvtParticle* p ) override;
};
 
#endif