G4ExcitedLambdaConstructor.cc

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// --------------------------------------------------------------
//  GEANT 4 class implementation file 
//      History: first implementation, based on object model of
//      10 oct 1998  H.Kurashige
// ---------------------------------------------------------------
 
 
#include "G4ExcitedLambdaConstructor.hh"
 
#include "G4SystemOfUnits.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4PhaseSpaceDecayChannel.hh"
#include "G4VDecayChannel.hh"
#include "G4DecayTable.hh"
 
 
G4ExcitedLambdaConstructor::G4ExcitedLambdaConstructor():
    G4ExcitedBaryonConstructor(NStates, LambdaIsoSpin)
{
 
}
 
G4ExcitedLambdaConstructor::~G4ExcitedLambdaConstructor()
{
}
 
G4DecayTable* G4ExcitedLambdaConstructor::CreateDecayTable(
                         const G4String&  parentName,  
                         G4int iIso3, 
                         G4int iState,
                         G4bool fAnti)
{
  // create decay table
  G4DecayTable* decayTable =  new G4DecayTable();
 
  G4double br;
  if ( (br=bRatio[iState][NK]) >0.0) {
    AddNKMode( decayTable, parentName, br, iIso3, fAnti);
  }
 
  if ( (br=bRatio[iState][NKStar]) >0.0) {
    AddNKStarMode( decayTable, parentName, br, iIso3, fAnti);
  }
 
  if ( (br=bRatio[iState][SigmaPi]) >0.0) {
    AddSigmaPiMode( decayTable, parentName, br, iIso3, fAnti);
  }
 
  if ( (br=bRatio[iState][SigmaStarPi]) >0.0) {
    AddSigmaStarPiMode( decayTable, parentName, br, iIso3, fAnti);
  }
 
  if ( (br=bRatio[iState][LambdaGamma]) >0.0) {
    AddLambdaGammaMode( decayTable, parentName, br, iIso3, fAnti);
  }
 
  if ( (br=bRatio[iState][LambdaEta]) >0.0) {
    AddLambdaEtaMode( decayTable, parentName, br, iIso3, fAnti);
  }
 
  if ( (br=bRatio[iState][LambdaOmega]) >0.0) {
    AddLambdaOmegaMode( decayTable, parentName, br, iIso3, fAnti);
  }
 
  return  decayTable;
}
 
G4DecayTable*  G4ExcitedLambdaConstructor::AddLambdaGammaMode( 
                   G4DecayTable* decayTable, const G4String& nameParent,
                    G4double br, G4int , G4bool fAnti)
{
  G4VDecayChannel* mode;
 
  // 
  G4String lambda = "lambda";  
  if (fAnti) lambda = "anti_" + lambda;
 
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br, 2,
                                           lambda,"gamma");
  // add decay table
  decayTable->Insert(mode);
 
  return decayTable;
}
G4DecayTable*  G4ExcitedLambdaConstructor::AddLambdaEtaMode( 
                   G4DecayTable* decayTable, const G4String& nameParent,
                    G4double br, G4int , G4bool fAnti)
{
  G4VDecayChannel* mode;
 
  // 
  G4String lambda = "lambda";  
  if (fAnti) lambda = "anti_" + lambda;
 
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br, 2,
                                           lambda,"eta");
  // add decay table
  decayTable->Insert(mode);
 
  return decayTable;
}
 
G4DecayTable*  G4ExcitedLambdaConstructor::AddLambdaOmegaMode( 
                   G4DecayTable* decayTable, const G4String& nameParent,
                    G4double br, G4int , G4bool fAnti)
{
  G4VDecayChannel* mode;
 
  // 
  G4String lambda = "lambda";  
  if (fAnti) lambda = "anti_" + lambda;
 
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br, 2,
                                           lambda,"omega");
  // add decay table
  decayTable->Insert(mode);
 
  return decayTable;
}
 
G4DecayTable*  G4ExcitedLambdaConstructor::AddNKMode( 
                    G4DecayTable* decayTable, const G4String& nameParent,
                    G4double br, G4int , G4bool fAnti)
{
  G4VDecayChannel* mode;
 
  G4String daughterN;
  G4String daughterK;
 
  // ------------ N K- ------------ 
  // determine daughters
  daughterN  = "proton";
  if (!fAnti) {
    daughterK = "kaon-";
  } else {
    daughterK = "kaon+";
  }
  if (fAnti) daughterN = "anti_" + daughterN;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/2.0, 2,
                                           daughterN,daughterK);
  // add decay table
  decayTable->Insert(mode);
 
  // ------------ N K0 ------------ 
  // determine daughters
  daughterN  = "neutron";
  if (!fAnti) {
    daughterK = "anti_kaon0";
  } else {
    daughterK = "kaon0";
  }
  if (fAnti) daughterN = "anti_" + daughterN;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/2.0, 2,
                                           daughterN,daughterK);
  // add decay table
  decayTable->Insert(mode);
 
 
  return decayTable;
}
 
G4DecayTable*  G4ExcitedLambdaConstructor::AddNKStarMode( 
                    G4DecayTable* decayTable, const G4String& nameParent,
                    G4double br, G4int , G4bool fAnti)
{
  G4VDecayChannel* mode;
 
  G4String daughterN;
  G4String daughterK;
 
  // ------------ N K- ------------ 
  // determine daughters
  daughterN  = "proton";
  if (!fAnti) {
    daughterK = "k_star-";
  } else {
    daughterK = "k_star+";
  }
  if (fAnti) daughterN = "anti_" + daughterN;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/2.0, 2,
                                           daughterN,daughterK);
  // add decay table
  decayTable->Insert(mode);
 
  // ------------ N K0 ------------ 
  // determine daughters
  daughterN  = "neutron";
  if (!fAnti) {
    daughterK = "anti_k_star0";
  } else {
    daughterK = "k_star0";
  }
  if (fAnti) daughterN = "anti_" + daughterN;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/2.0, 2,
                                           daughterN,daughterK);
  // add decay table
  decayTable->Insert(mode);
 
 
  return decayTable;
}
 
G4DecayTable*  G4ExcitedLambdaConstructor::AddSigmaPiMode( 
                    G4DecayTable* decayTable, const G4String& nameParent,
                    G4double br, G4int , G4bool fAnti)
{
  G4VDecayChannel* mode;
 
  G4String daughterSigma;
  G4String daughterPi;
 
  // ------------ Sigma+ pi - ------------ 
  // determine daughters
  daughterSigma = "sigma+";
  if (!fAnti) {
    daughterPi = "pi-";
  } else {
    daughterPi = "pi+";
  }
  if (fAnti) daughterSigma = "anti_" + daughterSigma;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/3.0, 2,
                                           daughterSigma,daughterPi);
  // add decay table
  decayTable->Insert(mode);
 
   // ------------ Sigma0 Pi0 ------------ 
  // determine daughters
  daughterSigma  = "sigma0";
  daughterPi = "pi0";
 
  if (fAnti) daughterSigma = "anti_" + daughterSigma;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/3.0, 2,
                                           daughterSigma,daughterPi);
 
  // add decay table
  decayTable->Insert(mode);
 
  // ------------ Sigma- pi + ------------ 
  // determine daughters
  daughterSigma = "sigma-";
  if (!fAnti) {
    daughterPi = "pi+";
  } else {
    daughterPi = "pi-";
  }
  if (fAnti) daughterSigma = "anti_" + daughterSigma;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/3.0, 2,
                                           daughterSigma,daughterPi);
  // add decay table
  decayTable->Insert(mode);
 
  return decayTable;
}
 
 
G4DecayTable*  G4ExcitedLambdaConstructor::AddSigmaStarPiMode( 
                    G4DecayTable* decayTable, const G4String& nameParent,
                    G4double br, G4int , G4bool fAnti)
{
  G4VDecayChannel* mode;
 
  G4String daughterSigma;
  G4String daughterPi;
 
  // ------------ Sigma+ pi - ------------ 
  // determine daughters
  daughterSigma = "sigma(1385)+";
  if (!fAnti) {
    daughterPi = "pi-";
  } else {
    daughterPi = "pi+";
  }
  if (fAnti) daughterSigma = "anti_" + daughterSigma;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/3.0, 2,
                                           daughterSigma,daughterPi);
  // add decay table
  decayTable->Insert(mode);
 
   // ------------ Sigma0 Pi0 ------------ 
  // determine daughters
  daughterSigma  = "sigma(1385)0";
  daughterPi = "pi0";
 
  if (fAnti) daughterSigma = "anti_" + daughterSigma;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/3.0, 2,
                                           daughterSigma,daughterPi);
 
  // add decay table
  decayTable->Insert(mode);
 
  // ------------ Sigma- pi + ------------ 
  // determine daughters
  daughterSigma = "sigma(1385)-";
  if (!fAnti) {
    daughterPi = "pi+";
  } else {
    daughterPi = "pi-";
  }
  if (fAnti) daughterSigma = "anti_" + daughterSigma;
  // create decay channel  [parent    BR     #daughters]
  mode = new G4PhaseSpaceDecayChannel(nameParent, br/3.0, 2,
                                           daughterSigma,daughterPi);
  // add decay table
  decayTable->Insert(mode);
 
  return decayTable;
}
 
const char* G4ExcitedLambdaConstructor::name[] = {
  "lambda(1405)","lambda(1520)","lambda(1600)","lambda(1670)","lambda(1690)", 
  "lambda(1800)","lambda(1810)","lambda(1820)","lambda(1830)","lambda(1890)",
  "lambda(2100)","lambda(2110)"
};
 
const G4double G4ExcitedLambdaConstructor::mass[] = {
  1.4051*GeV,1.5195*GeV, 1.600*GeV, 1.670*GeV,  1.690*GeV, 
   1.800*GeV, 1.810*GeV, 1.820*GeV, 1.830*GeV,  1.890*GeV, 
   2.100*GeV, 2.110*GeV
};
 
const G4double G4ExcitedLambdaConstructor::width[] = {
   50.5*MeV,  15.6*MeV, 150.0*MeV,  35.0*MeV,  60.0*MeV,
  300.0*MeV, 150.0*MeV,  80.0*MeV,  95.0*MeV, 100.0*MeV,
  200.0*MeV, 200.0*MeV
};
 
const G4int G4ExcitedLambdaConstructor::iSpin[] = {
    1,   3,   1,   1,   3,
    1,   1,   5,   5,   3,
    7,   5
};
 
const G4int G4ExcitedLambdaConstructor::iParity[] = {
  -1,  -1,   +1,  -1,  -1,
  -1,  +1,   +1,  -1,  +1,
  -1,  +1 
};
 
const G4int G4ExcitedLambdaConstructor::encodingOffset[] = {
  10000,     0, 20000, 30000, 10000,
  40000, 50000,     0, 10000, 20000, 
      0, 20000
};
 
const G4double G4ExcitedLambdaConstructor::bRatio[ G4ExcitedLambdaConstructor::NStates ][ G4ExcitedLambdaConstructor::NumberOfDecayModes] = 
{
   {   0.0,  0.0,  1.0,  0.0,  0.0,   0.0,   0.0}, 
   {  0.45,  0.0, 0.43, 0.11, 0.01,   0.0,   0.0}, 
   {  0.35,  0.0, 0.65,  0.0,  0.0,   0.0,   0.0}, 
   {  0.20,  0.0, 0.50,  0.0,  0.0,  0.30,   0.0}, 
   {  0.25,  0.0, 0.45, 0.30,  0.0,   0.0,   0.0}, 
   {  0.40, 0.20, 0.20, 0.20,  0.0,   0.0,   0.0}, 
   {  0.35, 0.45, 0.15, 0.05,  0.0,   0.0,   0.0}, 
   {  0.73,  0.0, 0.16, 0.11,  0.0,   0.0,   0.0}, 
   {  0.10,  0.0, 0.70, 0.20,  0.0,   0.0,   0.0}, 
   {  0.37, 0.21, 0.11, 0.31,  0.0,   0.0,   0.0}, 
   {  0.35, 0.20, 0.05, 0.30,  0.0,  0.02,  0.08}, 
   {  0.25, 0.45, 0.30,  0.0,  0.0,   0.0,   0.0}
};