Gabriele Cosmo
120 lines
4.4 KiB
C++
120 lines
4.4 KiB
C++
// This code implementation is the intellectual property of
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// the RD44 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: G4TauPlus.cc,v 2.2 1998/09/24 05:53:28 kurasige Exp $
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// GEANT4 tag $Name: geant4-00 $
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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, based on object model of
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// 4th April 1996, G.Cosmo
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// 7 July 1996 H.Kurashige
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// **********************************************************************
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#include <fstream.h>
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#include <iomanip.h>
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#include "G4TauPlus.hh"
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#include "G4PhaseSpaceDecayChannel.hh"
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#include "G4DecayTable.hh"
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// ######################################################################
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// ### TAPLUS ###
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// ######################################################################
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G4TauPlus::G4TauPlus(
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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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: G4VLepton( 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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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*[6];
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// tau+ -> mu+ + nu_mu + anti_nu_tau
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mode[0] = new G4PhaseSpaceDecayChannel("tau+",0.174,3,"mu+","nu_mu","anti_nu_tau");
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// tau+ -> e+ + nu_e + anti_nu_tau
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mode[1] = new G4PhaseSpaceDecayChannel("tau+",0.178,3,"e+","nu_e","anti_nu_tau");
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// tau+ -> pi+ + anti_nu_tau
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mode[2] = new G4PhaseSpaceDecayChannel("tau+",0.113,2,"pi+","anti_nu_tau");
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// tau+ -> pi0 + pi0 + pi+ + anti_nu_tau
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mode[3] = new G4PhaseSpaceDecayChannel("tau+",0.252,3,"pi0","pi+","anti_nu_tau");
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// tau+ -> pi0 + pi0 + pi+ + anti_nu_tau
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mode[4] = new G4PhaseSpaceDecayChannel();
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mode[4]->SetParent("tau+");
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mode[4]->SetBR(0.093);
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mode[4]->SetNumberOfDaughters(4);
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mode[4]->SetDaughter(0,"pi0");
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mode[4]->SetDaughter(1,"pi0");
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mode[4]->SetDaughter(2,"pi+");
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mode[4]->SetDaughter(3,"anti_nu_tau");
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// tau+ -> pi+ + pi+ + pi- + anti_nu_tau
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mode[5] = new G4PhaseSpaceDecayChannel();
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mode[5]->SetParent("tau+");
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mode[5]->SetBR(0.098);
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mode[5]->SetNumberOfDaughters(4);
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mode[5]->SetDaughter(0,"pi+");
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mode[5]->SetDaughter(1,"pi+");
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mode[5]->SetDaughter(2,"pi-");
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mode[5]->SetDaughter(3,"anti_nu_tau");
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for (G4int index=0; index <6; 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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//
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G4TauPlus G4TauPlus::theTauPlus(
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"tau+", 1.7771*GeV, 0.0*MeV, 1.*eplus,
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1, 0, 0,
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0, 0, 0,
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"lepton", -1, 0, -15,
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true, 295.6e-6*ns, NULL
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);
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G4TauPlus* G4TauPlus::TauPlusDefinition(){return &theTauPlus;}
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// initialization for static cut values
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G4double G4TauPlus::theTauPlusLengthCut = -1.0;
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G4double* G4TauPlus::theTauPlusKineticEnergyCuts = NULL;
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