Gabriele Cosmo
105 lines
4.2 KiB
C++
105 lines
4.2 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4EtaPrime.cc,v 1.16 2005/01/14 03:49:16 asaim Exp $
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// GEANT4 tag $Name: geant4-08-00 $
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//
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//
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// ----------------------------------------------------------------
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// GEANT 4 class implementation file
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//
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// History: first implementation, 8 June 1998 Hisaya Kurashige
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// **********************************************************************
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// New impelemenataion as an utility class M.Asai, 26 July 2004
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// ----------------------------------------------------------------------
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#include "G4EtaPrime.hh"
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#include "G4ParticleTable.hh"
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#include "G4PhaseSpaceDecayChannel.hh"
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#include "G4DecayTable.hh"
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// ######################################################################
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// ### EtaPrime ###
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// ######################################################################
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G4EtaPrime* G4EtaPrime::theInstance = 0;
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G4EtaPrime* G4EtaPrime::Definition()
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{
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if (theInstance !=0) return theInstance;
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const G4String name = "eta_prime";
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// search in particle table]
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G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
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G4ParticleDefinition* anInstance = pTable->FindParticle(name);
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if (anInstance ==0)
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{
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// create particle
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//
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// Arguments for constructor are as follows
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// name mass width charge
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// 2*spin parity C-conjugation
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// 2*Isospin 2*Isospin3 G-parity
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// type lepton number baryon number PDG encoding
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// stable lifetime decay table
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// shortlived subType anti_encoding
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anInstance = new G4ParticleDefinition(
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name, 0.95777*GeV, 0.202*MeV, 0.0,
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0, -1, +1,
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0, 0, +1,
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"meson", 0, 0, 331,
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false, 0.0*ns, NULL,
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false, "eta_prime", 331);
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//create Decay Table
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G4DecayTable* table = new G4DecayTable();
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// create decay channels
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G4VDecayChannel** mode = new G4VDecayChannel*[3];
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// EtaPrime -> eta + pi+ + pi-
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mode[0] = new G4PhaseSpaceDecayChannel("eta_prime",0.437,3,"eta","pi+","pi-");
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// EtaPrime -> eta + pi0 + pi0
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mode[1] = new G4PhaseSpaceDecayChannel("eta_prime",0.208,3,"eta","pi0","pi0");
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// EtaPrime -> rho0 + gamma
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mode[2] = new G4PhaseSpaceDecayChannel("eta_prime",0.302,2,"rho0","gamma");
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for (G4int index=0; index <3; index++ ) table->Insert(mode[index]);
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delete [] mode;
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anInstance->SetDecayTable(table);
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}
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theInstance = reinterpret_cast<G4EtaPrime*>(anInstance);
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return theInstance;
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}
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G4EtaPrime* G4EtaPrime::EtaPrimeDefinition()
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{
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return Definition();
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}
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G4EtaPrime* G4EtaPrime::EtaPrime()
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{
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return Definition();
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}
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