geant4/source/particles/shortlived/include/G4ExcitedDeltaConstructor.hh

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// --------------------------------------------------------------
//	GEANT 4 class implementation file
//
//      History: first implementation, based on object model of
//      10 oct 1998  H.Kurashige
// ---------------------------------------------------------------
#ifndef G4ExcitedDeltaConstructor_h
#define G4ExcitedDeltaConstructor_h 1

#include "G4ExcitedBaryonConstructor.hh"
#include "globals.hh"

class G4ExcitedDeltaConstructor : public G4ExcitedBaryonConstructor
{
    // This class is a utility class for construction
    // short lived particles
  public:
    enum
    {
      NStates = 9
    };

    enum
    {
      NumberOfDecayModes = 5
    };

  public:
    G4ExcitedDeltaConstructor();
    ~G4ExcitedDeltaConstructor() override = default;

  protected:
    G4int GetEncoding(G4int iIsoSpin3, G4int idxState) override;

    G4bool Exist(G4int) override { return true; }

    G4int GetQuarkContents(G4int, G4int) override;
    G4String GetName(G4int iIso3, G4int iState) override;
    G4String GetMultipletName(G4int iState) override;

    G4double GetMass(G4int state, G4int iso) override;
    G4double GetWidth(G4int state, G4int iso) override;
    G4int GetiSpin(G4int iState) override;
    G4int GetiParity(G4int iState) override;
    G4int GetEncodingOffset(G4int iState) override;

    G4DecayTable* CreateDecayTable(const G4String& name, G4int iIso3, G4int iState,
                                   G4bool fAnti = false) override;

  private:
    G4DecayTable* AddNGammaMode(G4DecayTable* table, const G4String& name, G4double br, G4int iIso3,
                                G4bool fAnti);
    G4DecayTable* AddNPiMode(G4DecayTable* table, const G4String& name, G4double br, G4int iIso3,
                             G4bool fAnti);
    G4DecayTable* AddNRhoMode(G4DecayTable* table, const G4String& name, G4double br, G4int iIso3,
                              G4bool fAnti);
    G4DecayTable* AddDeltaPiMode(G4DecayTable* table, const G4String& name, G4double br,
                                 G4int iIso3, G4bool fAnti);
    G4DecayTable* AddNStarPiMode(G4DecayTable* table, const G4String& name, G4double br,
                                 G4int iIso3, G4bool fAnti);

  private:
    enum
    {
      DeltaIsoSpin = 3
    };

    static const char* name[NStates];
    static const G4double mass[NStates];
    static const G4double width[NStates];
    static const G4int iSpin[NStates];
    static const G4int iParity[NStates];
    static const G4int encodingOffset[NStates];

    enum
    {
      NGamma = 0,
      NPi = 1,
      NRho = 2,
      DeltaPi = 3,
      NStarPi = 4
    };

    static const G4double bRatio[NStates][NumberOfDecayModes];
};

inline G4double G4ExcitedDeltaConstructor::GetMass(G4int iState, G4int)
{
  return mass[iState];
}

inline G4double G4ExcitedDeltaConstructor::GetWidth(G4int iState, G4int)
{
  return width[iState];
}

inline G4int G4ExcitedDeltaConstructor::GetiSpin(G4int iState)
{
  return iSpin[iState];
}

inline G4int G4ExcitedDeltaConstructor::GetiParity(G4int iState)
{
  return iParity[iState];
}

inline G4int G4ExcitedDeltaConstructor::GetEncodingOffset(G4int iState)
{
  return encodingOffset[iState];
}

inline G4int G4ExcitedDeltaConstructor::GetQuarkContents(G4int iQ, G4int iIso3)
{
  // Quark contents
  //    iIso3 = +3 : uuu
  //    iIso3 = +1 : uud
  //    iIso3 = -1 : udd
  //    iIso3 = -3 : ddd
  G4int quark = 0;
  if (iQ == 0) {
    if (iIso3 == -3) {
      // d-quark
      quark = 1;
    }
    else {
      // u-quark
      quark = 2;
    }
  }
  else if (iQ == 2) {
    if (iIso3 == +3) {
      // u-quark
      quark = 2;
    }
    else {
      // d-quark
      quark = 1;
    }
  }
  else {
    if ((iIso3 == -1) || (iIso3 == -3)) {
      // d-quark
      quark = 1;
    }
    else {
      // u-quark
      quark = 2;
    }
  }
  return quark;
}

inline G4String G4ExcitedDeltaConstructor::GetMultipletName(G4int iState)
{
  return name[iState];
}

inline G4String G4ExcitedDeltaConstructor::GetName(G4int iIso3, G4int iState)
{
  G4String particle = name[iState];
  if (iIso3 == -3) {
    particle += "-";
  }
  else if (iIso3 == -1) {
    particle += "0";
  }
  else if (iIso3 == +1) {
    particle += "+";
  }
  else {
    particle += "++";
  }
  return particle;
}
#endif