Gabriele Cosmo
133 lines
5.5 KiB
C++
133 lines
5.5 KiB
C++
//
|
|
// ********************************************************************
|
|
// * 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: *
|
|
// * http://cern.ch/geant4/license *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. *
|
|
// * *
|
|
// * This code implementation is the intellectual property of the *
|
|
// * GEANT4 collaboration. *
|
|
// * By copying, distributing or modifying the Program (or any work *
|
|
// * based on the Program) you indicate your acceptance of this *
|
|
// * statement, and all its terms. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// $Id: G4TauPlus.cc,v 1.8 2002/03/08 08:48:31 kurasige Exp $
|
|
// GEANT4 tag $Name: geant4-05-01 $
|
|
//
|
|
//
|
|
// ----------------------------------------------------------------------
|
|
// GEANT 4 class implementation file
|
|
//
|
|
// History: first implementation, based on object model of
|
|
// 4th April 1996, G.Cosmo
|
|
// 7 July 1996 H.Kurashige
|
|
// **********************************************************************
|
|
|
|
#include "g4std/fstream"
|
|
#include "g4std/iomanip"
|
|
|
|
#include "G4TauPlus.hh"
|
|
|
|
#include "G4PhaseSpaceDecayChannel.hh"
|
|
#include "G4TauLeptonicDecayChannel.hh"
|
|
#include "G4DecayTable.hh"
|
|
|
|
// ######################################################################
|
|
// ### TAPLUS ###
|
|
// ######################################################################
|
|
|
|
G4TauPlus::G4TauPlus(
|
|
const G4String& aName, G4double mass,
|
|
G4double width, G4double charge,
|
|
G4int iSpin, G4int iParity,
|
|
G4int iConjugation, G4int iIsospin,
|
|
G4int iIsospin3, G4int gParity,
|
|
const G4String& pType, G4int lepton,
|
|
G4int baryon, G4int encoding,
|
|
G4bool stable, G4double lifetime,
|
|
G4DecayTable *decaytable )
|
|
: G4VLepton( aName,mass,width,charge,iSpin,iParity,
|
|
iConjugation,iIsospin,iIsospin3,gParity,pType,
|
|
lepton,baryon,encoding,stable,lifetime,decaytable )
|
|
{
|
|
SetParticleSubType("tau");
|
|
SetPDGStable(false);
|
|
|
|
//create Decay Table
|
|
G4DecayTable* table = GetDecayTable();
|
|
if (table!=NULL) delete table;
|
|
table = new G4DecayTable();
|
|
|
|
// create decay channels
|
|
G4VDecayChannel** mode = new G4VDecayChannel*[6];
|
|
// tau+ -> mu+ + nu_mu + anti_nu_tau
|
|
mode[0] = new G4TauLeptonicDecayChannel("tau+",0.174,"mu+");
|
|
// tau+ -> e+ + nu_e + anti_nu_tau
|
|
mode[1] = new G4TauLeptonicDecayChannel("tau+",0.178,"e+");
|
|
// tau+ -> pi+ + anti_nu_tau
|
|
mode[2] = new G4PhaseSpaceDecayChannel("tau+",0.113,2,"pi+","anti_nu_tau");
|
|
// tau+ -> pi0 + pi0 + pi+ + anti_nu_tau
|
|
mode[3] = new G4PhaseSpaceDecayChannel("tau+",0.252,3,"pi0","pi+","anti_nu_tau");
|
|
// tau+ -> pi0 + pi0 + pi+ + anti_nu_tau
|
|
mode[4] = new G4PhaseSpaceDecayChannel();
|
|
mode[4]->SetParent("tau+");
|
|
mode[4]->SetBR(0.093);
|
|
mode[4]->SetNumberOfDaughters(4);
|
|
mode[4]->SetDaughter(0,"pi0");
|
|
mode[4]->SetDaughter(1,"pi0");
|
|
mode[4]->SetDaughter(2,"pi+");
|
|
mode[4]->SetDaughter(3,"anti_nu_tau");
|
|
// tau+ -> pi+ + pi+ + pi- + anti_nu_tau
|
|
mode[5] = new G4PhaseSpaceDecayChannel();
|
|
mode[5]->SetParent("tau+");
|
|
mode[5]->SetBR(0.098);
|
|
mode[5]->SetNumberOfDaughters(4);
|
|
mode[5]->SetDaughter(0,"pi+");
|
|
mode[5]->SetDaughter(1,"pi+");
|
|
mode[5]->SetDaughter(2,"pi-");
|
|
mode[5]->SetDaughter(3,"anti_nu_tau");
|
|
|
|
for (G4int index=0; index <6; index++ ) table->Insert(mode[index]);
|
|
|
|
delete [] mode;
|
|
|
|
SetDecayTable(table);
|
|
}
|
|
|
|
// ......................................................................
|
|
// ... static member definitions ...
|
|
// ......................................................................
|
|
//
|
|
// 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
|
|
//
|
|
G4TauPlus G4TauPlus::theTauPlus(
|
|
"tau+", 1.77705*GeV, 2.27e-9*MeV, 1.*eplus,
|
|
1, 0, 0,
|
|
0, 0, 0,
|
|
"lepton", -1, 0, -15,
|
|
true, 295.6e-6*ns, NULL
|
|
);
|
|
|
|
G4TauPlus* G4TauPlus::TauPlusDefinition(){return &theTauPlus;}
|
|
|
|
G4TauPlus* G4TauPlus::TauPlus()
|
|
{
|
|
return &theTauPlus;
|
|
}
|
|
|