//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in:                      *
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// * regarding  this  software system or assume any liability for its *
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// * GEANT4 collaboration.                                            *
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//
//
// $Id: G4SigmaPlus.cc,v 1.12 2005/01/14 03:49:11 asaim Exp $
// GEANT4 tag $Name: geant4-08-00 $
//
// 
// ----------------------------------------------------------------------
//      GEANT 4 class implementation file
//
//      History: first implementation, based on object model of
//      4th April 1996, G.Cosmo
// **********************************************************************
//  New impelemenataion as an utility class  M.Asai, 26 July 2004
// ----------------------------------------------------------------------

#include "G4SigmaPlus.hh"
#include "G4ParticleTable.hh"

#include "G4PhaseSpaceDecayChannel.hh"
#include "G4DecayTable.hh"

// ######################################################################
// ###                           SigmaPlus                            ###
// ######################################################################

G4SigmaPlus* G4SigmaPlus::theInstance = 0;

G4SigmaPlus* G4SigmaPlus::Definition()
{
  if (theInstance !=0) return theInstance;
  const G4String name = "sigma+";
  // 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,    1.18937*GeV, 8.209e-12*MeV,       eplus,
                    1,              +1,             0,
                    2,              +2,             0,
             "baryon",               0,            +1,        3222,
                false,       0.0799*ns,          NULL,
                false,       "sigma");
 //create Decay Table
  G4DecayTable* table = new G4DecayTable();

  // create decay channels
  G4VDecayChannel** mode = new G4VDecayChannel*[2];
  // sigma+ -> proton + pi0
  mode[0] = new G4PhaseSpaceDecayChannel("sigma+",0.516,2,"proton","pi0");
  // sigma+ -> neutron + pi+
  mode[1] = new G4PhaseSpaceDecayChannel("sigma+",0.483,2,"neutron","pi+");

  for (G4int index=0; index <2; index++ ) table->Insert(mode[index]);
  delete [] mode;

   anInstance->SetDecayTable(table);
  }
  theInstance = reinterpret_cast<G4SigmaPlus*>(anInstance);
  return theInstance;
}

G4SigmaPlus*  G4SigmaPlus::SigmaPlusDefinition()
{
  return Definition();
}

G4SigmaPlus*  G4SigmaPlus::SigmaPlus()
{
  return Definition();
}