G4DMesonZero.cc

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// ----------------------------------------------------------------------
//      GEANT 4 class implementation file
//
//      Created                 Hisaya Kurashige, 16 June 1997
// **********************************************************************
//  New impelemenataion as an utility class  M.Asai, 26 July 2004
// ----------------------------------------------------------------
 
#include "G4DMesonZero.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleTable.hh"
 
// ######################################################################
// ###                          DMesonZero                            ###
// ######################################################################
 
G4DMesonZero* G4DMesonZero::theInstance = 0;
 
G4DMesonZero* G4DMesonZero::Definition()
{
  if (theInstance !=0) return theInstance;
  const G4String name = "D0";
  // search in particle table]
  G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
  G4ParticleDefinition* anInstance = pTable->FindParticle(name);
  if (anInstance ==0)
  {
  // create particle
  //
  //    Arguments for constructor are as follows
  //               name             mass          width         charge
  //             2*spin           parity  C-conjugation
  //          2*Isospin       2*Isospin3       G-parity
  //               type    lepton number  baryon number   PDG encoding
  //             stable         lifetime    decay table
  //             shortlived      subType    anti_encoding
   anInstance = new G4ParticleDefinition(
                 name,     1.86484*GeV,  1.605e-9*MeV,          0.,
                    0,              -1,             0,
                    1,              -1,             0,
              "meson",               0,             0,         421,
                false,    0.4101e-3*ns,          NULL,
             false,           "D"
              );
  }
  theInstance = static_cast<G4DMesonZero*>(anInstance);
  return theInstance;
}
 
G4DMesonZero*  G4DMesonZero::DMesonZeroDefinition()
{
  return Definition();
}
 
G4DMesonZero*  G4DMesonZero::DMesonZero()
{
  return Definition();
}