Gabriele Cosmo
125 lines
4.8 KiB
C++
125 lines
4.8 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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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 statement,
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// and all its terms.
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//
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// $Id: G4EtaPrime.cc,v 1.4 2000/02/27 05:57:44 kurasige Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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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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// For information related to this code contact:
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// CERN, CN Division, ASD Group
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// History: first implementation, 8 June 1998 Hisaya Kurashige
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// ****************************************************************
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// ----------------------------------------------------------------
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#include "g4std/fstream"
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#include "g4std/iomanip"
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#include "G4EtaPrime.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(
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const G4String& aName, G4double mass,
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G4double width, G4double charge,
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G4int iSpin, G4int iParity,
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G4int iConjugation, G4int iIsospin,
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G4int iIsospin3, G4int gParity,
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const G4String& pType, G4int lepton,
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G4int baryon, G4int encoding,
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G4bool stable, G4double lifetime,
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G4DecayTable *decaytable )
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: G4VMeson( aName,mass,width,charge,iSpin,iParity,
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iConjugation,iIsospin,iIsospin3,gParity,pType,
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lepton,baryon,encoding,stable,lifetime,decaytable )
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{
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SetParticleSubType("eta_prime");
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// Anti-particle of EtaPrime is EtaPrime itself
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SetAntiPDGEncoding(encoding);
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SetPDGStable(false);
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//create Decay Table
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G4DecayTable* table = GetDecayTable();
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if (table!=NULL) delete table;
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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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SetDecayTable(table);
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}
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// ......................................................................
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// ... static member definitions ...
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// ......................................................................
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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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G4EtaPrime G4EtaPrime::theEtaPrime(
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"eta_prime", 0.95777*GeV, 0.203*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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);
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G4EtaPrime* G4EtaPrime::EtaPrimeDefinition(){return &theEtaPrime;}
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// initialization for static cut values
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G4double G4EtaPrime::theEtaPrimeLengthCut = -1.0;
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G4double* G4EtaPrime::theEtaPrimeKineticEnergyCuts = NULL;
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// **********************************************************************
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// **************************** SetCuts *********************************
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// **********************************************************************
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void G4EtaPrime::SetCuts(G4double aCut)
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{
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theCutInMaxInteractionLength = aCut;
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const G4MaterialTable* materialTable = G4Material::GetMaterialTable();
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// Create the vector of cuts in energy
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// corresponding to the stopping range cut
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if(theKineticEnergyCuts) delete theKineticEnergyCuts;
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theKineticEnergyCuts = new G4double [materialTable->length()];
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// Build range vector for every material, convert cut into energy-cut,
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// fill theKineticEnergyCuts and delete the range vector
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for (G4int J=0; J<materialTable->length(); J++)
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{
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G4Material* aMaterial = (*materialTable)[J];
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theKineticEnergyCuts[J] = LowestEnergy;
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}
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theEtaPrimeLengthCut = theCutInMaxInteractionLength;
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theEtaPrimeKineticEnergyCuts = theKineticEnergyCuts;
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}
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