G4KL3DecayChannel.hh

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// G4KL3DecayChannel
 
// Author: H.Kurashige, 30 May 1997 
// --------------------------------------------------------------------
#ifndef G4KL3DecayChannel_hh
#define G4KL3DecayChannel_hh 1
 
#include "G4ios.hh"
#include "globals.hh"
#include "G4VDecayChannel.hh"
 
class G4KL3DecayChannel : public G4VDecayChannel
{
  public:
 
    G4KL3DecayChannel(const G4String& theParentName,
                            G4double  theBR,
                      const G4String& thePionName,
                      const G4String& theLeptonName,
                      const G4String& theNutrinoName);
    virtual ~G4KL3DecayChannel();
      // Constructor & destructor
 
    virtual G4DecayProducts* DecayIt(G4double);     
 
    inline void SetDalitzParameter(G4double aLambda, G4double aXi );
    inline G4double GetDalitzParameterLambda() const;
    inline G4double GetDalitzParameterXi() const;
 
  protected:
 
    G4KL3DecayChannel(const G4KL3DecayChannel&);
    G4KL3DecayChannel& operator=(const G4KL3DecayChannel&);
      // Copy constructor and assignment operator
 
    enum { idPi=0, idLepton=1, idNutrino=2 }; 
      // Assignment of daughter particles for arrays of daughters[] etc.
 
    void PhaseSpace(G4double Mparent,
                    const G4double* Mdaughter,
                    G4double*       Edaughter,
                    G4double*       Pdaughter);
      // Calculate momentum of daughters
 
    G4double DalitzDensity(G4double parentmass, G4double Epi, G4double El,
                           G4double Enu, G4double massPi, G4double massL,
                           G4double massNu );
      // Dalitz Plot Density
      // KL3 decay   Dalitz Plot Density, see Chounet et al Phys. Rep. 4, 201
      //  Arguments
      //    Epi: kinetic enregy of pion
      //    El:  kinetic enregy of lepton (e or mu)
      //    Enu: kinetic energy of nutrino
      //  Constants
      //    pLambda : linear energy dependence of f+
      //    pXi0    : = f+(0)/f-
      //    pNorm   : normalization factor
 
  private:
 
    G4KL3DecayChannel();
 
  private:
 
    G4double pLambda = 0.0;
    G4double pXi0 = 0.0;
      // Used in DalitzDensity() coefficients
};  
 
// ------------------------
// Inline methods
// ------------------------
 
inline 
void G4KL3DecayChannel::SetDalitzParameter(G4double aLambda, G4double aXi)
{
  pLambda = aLambda;
  pXi0    = aXi;
}
 
inline 
G4double G4KL3DecayChannel::GetDalitzParameterLambda() const
{
  return pLambda;
}
 
inline 
G4double G4KL3DecayChannel::GetDalitzParameterXi() const
{
  return pXi0;
}
 
#endif