| 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4KL3DecayChannel.hh,v 1.6 2010/10/30 07:55:00 kurasige Exp $ |
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| 28 | // GEANT4 tag $Name: particles-V09-03-15 $ |
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| 29 | // |
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| 30 | // |
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| 31 | // ------------------------------------------------------------ |
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| 32 | // GEANT 4 class header file |
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| 33 | // |
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| 34 | // History: first implementation, based on object model of |
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| 35 | // 7 June 1997 H.Kurashige |
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| 36 | // ------------------------------------------------------------ |
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| 37 | #ifndef G4KL3DecayChannel_h |
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| 38 | #define G4KL3DecayChannel_h 1 |
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| 39 | |
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| 40 | #include "G4ios.hh" |
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| 41 | #include "globals.hh" |
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| 42 | #include "G4VDecayChannel.hh" |
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| 43 | |
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| 44 | class G4KL3DecayChannel :public G4VDecayChannel |
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| 45 | { |
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| 46 | public: // With Description |
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| 47 | //Constructors |
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| 48 | G4KL3DecayChannel(const G4String& theParentName, |
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| 49 | G4double theBR, |
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| 50 | const G4String& thePionName, |
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| 51 | const G4String& theLeptonName, |
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| 52 | const G4String& theNutrinoName); |
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| 53 | // Destructor |
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| 54 | virtual ~G4KL3DecayChannel(); |
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| 55 | |
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| 56 | public: // With Description |
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| 57 | virtual G4DecayProducts *DecayIt(G4double); |
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| 58 | |
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| 59 | protected: |
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| 60 | // assignment of daughter particles for arrays of daughters[] etc. |
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| 61 | enum{idPi=0, idLepton=1, idNutrino=2}; |
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| 62 | G4double daughterM[3]; |
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| 63 | |
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| 64 | protected: |
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| 65 | // calcurate momentum of daughters |
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| 66 | // results will be stored in Edaughter[3] and Pdaughter[3] |
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| 67 | void PhaseSpace(G4double Mparent, |
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| 68 | const G4double* Mdaughter, |
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| 69 | G4double* Edaughter, |
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| 70 | G4double* Pdaughter); |
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| 71 | |
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| 72 | protected: |
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| 73 | // Dalitz Plot Density |
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| 74 | // KL3 decay Dalitz Plot Density |
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| 75 | // see Chounet et al Phys. Rep. 4, 201 |
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| 76 | // arguments |
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| 77 | // Epi: kinetic enregy of pion |
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| 78 | // El: kinetic enregy of lepton (e or mu) |
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| 79 | // Enu: kinetic energy of nutrino |
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| 80 | // constants |
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| 81 | // pLambda : linear energy dependence of f+ |
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| 82 | // pXi0 : = f+(0)/f- |
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| 83 | // pNorm : normalization factor |
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| 84 | G4double DalitzDensity(G4double Epi, G4double El, G4double Enu); |
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| 85 | private: |
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| 86 | // constants used in DalitzDensity() |
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| 87 | // Kon mass |
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| 88 | G4double massK; |
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| 89 | // coefficients |
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| 90 | G4double pLambda; |
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| 91 | G4double pXi0; |
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| 92 | |
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| 93 | public: |
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| 94 | void SetDalitzParameter(G4double aLambda, G4double aXi ); |
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| 95 | G4double GetDalitzParameterLambda() const; |
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| 96 | G4double GetDalitzParameterXi() const; |
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| 97 | }; |
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| 98 | |
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| 99 | inline |
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| 100 | void G4KL3DecayChannel::SetDalitzParameter(G4double aLambda, G4double aXi) |
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| 101 | { |
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| 102 | pLambda = aLambda; |
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| 103 | pXi0 = aXi; |
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| 104 | } |
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| 105 | |
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| 106 | inline |
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| 107 | G4double G4KL3DecayChannel::GetDalitzParameterLambda() const |
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| 108 | { |
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| 109 | return pLambda; |
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| 110 | } |
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| 111 | |
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| 112 | inline |
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| 113 | G4double G4KL3DecayChannel::GetDalitzParameterXi() const |
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| 114 | { |
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| 115 | return pXi0; |
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| 116 | } |
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| 117 | |
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| 118 | |
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| 119 | #endif |
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| 120 | |
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| 121 | |
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| 122 | |
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| 123 | |
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