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G4GeneralPhaseSpaceDecay.hh
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4GeneralPhaseSpaceDecay.hh
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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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//
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// ----------------------------------------------------------------
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// GEANT 4 class header file
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//
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// History: first implementation, A. Feliciello, 20th May 1998
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//
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// Note: this class is a generalization of the
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// G4PhaseSpaceDecayChannel one
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// ----------------------------------------------------------------
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#ifndef G4GeneralPhaseSpaceDecay_h
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#define G4GeneralPhaseSpaceDecay_h 1
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#include "
G4ios.hh
"
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#include "
globals.hh
"
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#include "
G4VDecayChannel.hh
"
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#include "
G4HadronicException.hh
"
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class
G4GeneralPhaseSpaceDecay
:
public
G4VDecayChannel
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{
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public
:
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//Constructors
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G4GeneralPhaseSpaceDecay
(
G4int
Verbose = 1);
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G4GeneralPhaseSpaceDecay
(
const
G4String
& theParentName,
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G4double
theBR,
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G4int
theNumberOfDaughters,
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const
G4String
& theDaughterName1,
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const
G4String
& theDaughterName2 =
""
,
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const
G4String
& theDaughterName3 =
""
);
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G4GeneralPhaseSpaceDecay
(
const
G4String
& theParentName,
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G4double
theParentMass,
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G4double
theBR,
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G4int
theNumberOfDaughters,
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const
G4String
& theDaughterName1,
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const
G4String
& theDaughterName2 =
""
,
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const
G4String
& theDaughterName3 =
""
);
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G4GeneralPhaseSpaceDecay
(
const
G4String
& theParentName,
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G4double
theParentMass,
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G4double
theBR,
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G4int
theNumberOfDaughters,
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const
G4String
& theDaughterName1,
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const
G4String
& theDaughterName2 ,
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const
G4String
& theDaughterName3 ,
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const
G4double
* masses);
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G4GeneralPhaseSpaceDecay
(
const
G4String
& theParentName,
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G4double
theParentMass,
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G4double
theBR,
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G4int
theNumberOfDaughters,
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const
G4String
& theDaughterName1,
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const
G4String
& theDaughterName2 ,
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const
G4String
& theDaughterName3 ,
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const
G4String
& theDaughterName4 ,
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const
G4double
* masses);
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// Destructor
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virtual
~G4GeneralPhaseSpaceDecay
();
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public
:
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G4double
GetParentMass
()
const
;
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void
SetParentMass
(
const
G4double
aParentMass);
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virtual
G4DecayProducts
*
DecayIt
(
G4double
mass
=0.0);
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static
G4double
Pmx
(
G4double
e
,
G4double
p1,
G4double
p2);
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protected
:
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G4DecayProducts
*
OneBodyDecayIt
();
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G4DecayProducts
*
TwoBodyDecayIt
();
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G4DecayProducts
*
ThreeBodyDecayIt
();
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G4DecayProducts
*
ManyBodyDecayIt
();
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private
:
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G4double
parentmass
;
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const
G4double
*
theDaughterMasses
;
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};
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inline
G4double
G4GeneralPhaseSpaceDecay::GetParentMass
()
const
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{
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return
parentmass
;
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}
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inline
void
G4GeneralPhaseSpaceDecay::SetParentMass
(
const
G4double
aParentMass)
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{
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parentmass
= aParentMass;
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}
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inline
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G4double
G4GeneralPhaseSpaceDecay::Pmx
(
G4double
e
,
G4double
p1,
G4double
p2)
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{
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// calculate momentum of daughter particles in two-body decay
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if
(e-p1-p2 < 0 )
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{
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throw
G4HadronicException
(__FILE__, __LINE__,
"G4GeneralPhaseSpaceDecay::Pmx energy in cms < mass1+mass2"
);
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}
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G4double
ppp = (e+p1+p2)*(e+p1-p2)*(e-p1+p2)*(e-p1-p2)/(4.0*e*
e
);
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if
(ppp>0)
return
std::sqrt(ppp);
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else
return
-1.;
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}
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#endif
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include
G4GeneralPhaseSpaceDecay.hh
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Jin Huang
. updated:
Wed Jun 29 2022 17:25:51
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