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source
particles
leptons
src
G4TauMinus.cc
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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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. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4TauMinus.cc 95951 2016-03-03 10:44:16Z gcosmo $
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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, 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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// New impelemenataion as an utility class M.Asai, 26 July 2004
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// ----------------------------------------------------------------------
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#include "
G4TauMinus.hh
"
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#include "
G4PhysicalConstants.hh
"
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#include "
G4SystemOfUnits.hh
"
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#include "
G4ParticleTable.hh
"
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#include "
G4PhaseSpaceDecayChannel.hh
"
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#include "
G4TauLeptonicDecayChannel.hh
"
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#include "
G4DecayTable.hh
"
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// ######################################################################
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// ### TAUMINUS ###
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// ######################################################################
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G4TauMinus
*
G4TauMinus::theInstance
= 0;
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G4TauMinus
*
G4TauMinus::Definition
()
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{
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if
(
theInstance
!=0)
return
theInstance
;
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const
G4String
name
=
"tau-"
;
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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, 1.77686*
GeV
, 2.267
e
-9*
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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false
, 290.3
e
-6*
ns
, NULL,
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false
,
"tau"
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);
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// Bohr Magnetron
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G4double
muB = -0.5*
eplus
*
hbar_Planck
/(anInstance->
GetPDGMass
()/
c_squared
) ;
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anInstance->
SetPDGMagneticMoment
( muB * 1.00118);
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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;
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// tau- -> mu- + anti_nu_mu + nu_tau
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mode =
new
G4TauLeptonicDecayChannel
(
"tau-"
,0.1736,
"mu-"
);
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table->
Insert
(mode);
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// tau- -> e- + anti_nu_e + nu_tau
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mode =
new
G4TauLeptonicDecayChannel
(
"tau-"
,0.1784,
"e-"
);
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table->
Insert
(mode);
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// tau- -> pi- + nu_tau
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mode =
new
G4PhaseSpaceDecayChannel
(
"tau-"
,0.1106,2,
"pi-"
,
"nu_tau"
);
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table->
Insert
(mode);
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// tau- -> pi0 + pi- + nu_tau
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mode =
new
G4PhaseSpaceDecayChannel
(
"tau-"
,0.2541,3,
"pi0"
,
"pi-"
,
"nu_tau"
);
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table->
Insert
(mode);
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// tau- -> pi0 + pi0 + pi- + nu_tau
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mode =
new
G4PhaseSpaceDecayChannel
();
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mode->
SetParent
(
"tau-"
);
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mode->
SetBR
(0.0917);
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mode->
SetNumberOfDaughters
(4);
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mode->
SetDaughter
(0,
"pi0"
);
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mode->
SetDaughter
(1,
"pi0"
);
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mode->
SetDaughter
(2,
"pi-"
);
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mode->
SetDaughter
(3,
"nu_tau"
);
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table->
Insert
(mode);
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// tau- -> pi- + pi- + pi+ + nu_tau
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mode =
new
G4PhaseSpaceDecayChannel
();
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mode->
SetParent
(
"tau-"
);
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mode->
SetBR
(0.0946);
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mode->
SetNumberOfDaughters
(4);
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mode->
SetDaughter
(0,
"pi-"
);
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mode->
SetDaughter
(1,
"pi-"
);
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mode->
SetDaughter
(2,
"pi+"
);
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mode->
SetDaughter
(3,
"nu_tau"
);
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table->
Insert
(mode);
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anInstance->
SetDecayTable
(table);
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}
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theInstance
=
reinterpret_cast<
G4TauMinus
*
>
(anInstance);
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return
theInstance
;
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}
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G4TauMinus
*
G4TauMinus::TauMinusDefinition
()
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{
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return
Definition
();
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}
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G4TauMinus
*
G4TauMinus::TauMinus
()
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{
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return
Definition
();
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}
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G4ParticleTable::FindParticle
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
Definition:
G4ParticleTable.cc:577
G4PhysicalConstants.hh
name
const XML_Char * name
Definition:
expat.h:151
G4TauMinus::Definition
static G4TauMinus * Definition()
Definition:
G4TauMinus.cc:54
CLHEP::hbar_Planck
static constexpr double hbar_Planck
Definition:
PhysicalConstants.h:64
G4ParticleTable::GetParticleTable
static G4ParticleTable * GetParticleTable()
Definition:
G4ParticleTable.cc:105
MeV
static constexpr double MeV
Definition:
G4SIunits.hh:214
G4ParticleDefinition::SetDecayTable
void SetDecayTable(G4DecayTable *aDecayTable)
G4TauLeptonicDecayChannel.hh
G4DecayTable
Definition:
G4DecayTable.hh:50
G4TauLeptonicDecayChannel
Definition:
G4TauLeptonicDecayChannel.hh:43
G4String
Definition:
examples/extended/parallel/TopC/ParN02/AnnotatedFiles/G4String.hh:45
G4DecayTable::Insert
void Insert(G4VDecayChannel *aChannel)
Definition:
G4DecayTable.cc:62
G4ParticleDefinition::G4ParticleDefinition
G4ParticleDefinition()
Definition:
G4ParticleDefinition.cc:192
G4ParticleDefinition::GetPDGMass
G4double GetPDGMass() const
Definition:
G4ParticleDefinition.hh:123
G4VDecayChannel
Definition:
G4VDecayChannel.hh:53
G4PhaseSpaceDecayChannel.hh
CLHEP::c_squared
static constexpr double c_squared
Definition:
PhysicalConstants.h:56
G4VDecayChannel::SetBR
void SetBR(G4double value)
Definition:
G4VDecayChannel.cc:601
G4double
double G4double
Definition:
G4Types.hh:76
G4TauMinus.hh
G4SystemOfUnits.hh
G4TauMinus::theInstance
static G4TauMinus * theInstance
Definition:
G4TauMinus.hh:53
G4ParticleDefinition
Definition:
G4ParticleDefinition.hh:73
G4TauMinus::TauMinusDefinition
static G4TauMinus * TauMinusDefinition()
Definition:
G4TauMinus.cc:130
G4ParticleTable.hh
G4VDecayChannel::SetNumberOfDaughters
void SetNumberOfDaughters(G4int value)
Definition:
G4VDecayChannel.cc:257
G4VDecayChannel::SetParent
void SetParent(const G4ParticleDefinition *particle_type)
Definition:
G4VDecayChannel.cc:485
G4PhaseSpaceDecayChannel
Definition:
G4PhaseSpaceDecayChannel.hh:46
eplus
static constexpr double eplus
Definition:
G4SIunits.hh:199
G4TauMinus
Definition:
G4TauMinus.hh:50
G4TauMinus::TauMinus
static G4TauMinus * TauMinus()
Definition:
G4TauMinus.cc:135
G4DecayTable.hh
G4ParticleTable
Definition:
G4ParticleTable.hh:66
G4ParticleDefinition::SetPDGMagneticMoment
void SetPDGMagneticMoment(G4double mageticMoment)
e
Float_t e
Definition:
extended/medical/dna/range/plot.C:35
GeV
static constexpr double GeV
Definition:
G4SIunits.hh:217
ns
#define ns
Definition:
xmlparse.cc:614
G4VDecayChannel::SetDaughter
void SetDaughter(G4int anIndex, const G4ParticleDefinition *particle_type)
Definition:
G4VDecayChannel.cc:325
다음에 의해 생성됨 :
1.8.5