include/Geant4/G4NeutrinoNucleusModel.hh

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0026 //
0027 // $Id: G4NeutrinoNucleusModel.hh 90228 2015-05-21 08:49:57Z gcosmo $
0028 //
0029 // Geant4 Header : G4NeutrinoNucleusModel
0030 //
0031 // Author : V.Grichine 12.2.19
0032 //
0033 // Modified:
0034 //
0035 // Class Description
0036 // Default model for muon neutrino-nucleus charge current scattering;
0037 // Class Description - End
0038
0039 #ifndef G4NeutrinoNucleusModel_h
0040 #define G4NeutrinoNucleusModel_h 1
0041
0042 #include "globals.hh"
0043 #include "G4HadronicInteraction.hh"
0044 #include "G4HadProjectile.hh"
0045 #include "G4Nucleus.hh"
0046 #include "G4NucleiProperties.hh"
0047 #include "G4LorentzVector.hh"
0048
0049 class G4ParticleDefinition;
0050 class G4PreCompoundModel;
0051 // class G4CascadeInterface;
0052 // class G4BinaryCascade;
0053 // class G4TheoFSGenerator;
0054 // class G4LundStringFragmentation;
0055 // class G4ExcitedStringDecay;
0056 // class G4INCLXXInterface;
0057 class G4Nucleus;
0058 class G4Fragment;
0059 class G4GeneratorPrecompoundInterface;
0060 class G4ExcitationHandler;
0061
0062 class G4NeutrinoNucleusModel : public G4HadronicInteraction
0063 {
0064 public:
0065
0066   G4NeutrinoNucleusModel(const G4String& name = "neutrino-nucleus");
0067
0068   virtual ~G4NeutrinoNucleusModel();
0069
0070   virtual G4bool IsApplicable(const G4HadProjectile & aTrack,
0071                   G4Nucleus & targetNucleus);
0072
0073   G4double SampleXkr(G4double energy);
0074   G4double GetXkr(G4int iEnergy, G4double prob);
0075   G4double SampleQkr(G4double energy, G4double xx);
0076   G4double GetQkr(G4int iE, G4int jX, G4double prob);
0077
0078   virtual G4HadFinalState * ApplyYourself(const G4HadProjectile & aTrack,
0079                       G4Nucleus & targetNucleus)=0;
0080
0081  //////// fragmentation functions /////////////////////////
0082
0083   void ClusterDecay( G4LorentzVector & lvX, G4int qX);
0084
0085   void MesonDecay( G4LorentzVector & lvX, G4int qX);
0086
0087   void FinalBarion( G4LorentzVector & lvB, G4int qB, G4int pdgB);
0088
0089   void RecoilDeexcitation( G4Fragment& fragment);
0090
0091   void FinalMeson( G4LorentzVector & lvM, G4int qM, G4int pdgM);
0092
0093   void CoherentPion( G4LorentzVector & lvP, G4int pdgP, G4Nucleus & targetNucleus);
0094
0095
0096   // set/get class fields
0097
0098   void SetCutEnergy(G4double ec){fCutEnergy=ec;};
0099   G4double GetCutEnergy(){return fCutEnergy;};
0100
0101   G4double GetNuEnergy(){return fNuEnergy;};
0102   G4double GetQtransfer(){return fQtransfer;};
0103   G4double GetQ2(){return fQ2;};
0104   G4double GetXsample(){return fXsample;};
0105
0106   G4int    GetPDGencoding(){return fPDGencoding;};
0107   G4bool   GetCascade(){return fCascade;};
0108   G4bool   GetString(){return fString;};
0109
0110   G4double GetCosTheta(){return fCosTheta;};
0111   G4double GetEmu(){return fEmu;};
0112   G4double GetEx(){return fEx;};
0113   G4double GetMuMass(){return fMu;};
0114   G4double GetW2(){return fW2;};
0115   G4double GetM1(){return fM1;};
0116   G4double GetMr(){return fMr;};
0117   G4double GetTr(){return fTr;};
0118   G4double GetDp(){return fDp;};
0119
0120   G4bool GetfBreak()  {return fBreak;};
0121   G4bool GetfCascade(){return fCascade;};
0122   G4bool GetfString() {return fString;};
0123
0124   G4LorentzVector GetLVl(){return fLVl;};
0125   G4LorentzVector GetLVh(){return fLVh;};
0126   G4LorentzVector GetLVt(){return fLVt;};
0127   G4LorentzVector GetLVcpi(){return fLVcpi;};
0128
0129   G4double GetMinNuMuEnergy(){ return fMu + 0.5*fMu*fMu/fM1 + 4.*CLHEP::MeV; }; // kinematics + accuracy for sqrts
0130
0131   G4double ThresholdEnergy(G4double mI, G4double mF, G4double mP) // for cluster decay
0132   {
0133     G4double w = std::sqrt(fW2);
0134     return w + 0.5*( (mP+mF)*(mP+mF)-(w+mI)*(w+mI) )/mI;
0135   };
0136   G4double GetQEratioA(){ return fQEratioA; };
0137   void     SetQEratioA( G4double qea ){ fQEratioA = qea; };
0138
0139
0140   G4double FinalMomentum(G4double mI, G4double mF, G4double mP, G4LorentzVector lvX); // for cluster decay
0141
0142   // nucleon binding
0143
0144   G4double FermiMomentum( G4Nucleus & targetNucleus);
0145   G4double NucleonMomentum( G4Nucleus & targetNucleus);
0146
0147   G4double GetEx( G4int A, G4bool fP );
0148   G4double GgSampleNM(G4Nucleus & nucl);
0149
0150   G4int    GetEnergyIndex(G4double energy);
0151   G4double GetNuMuQeTotRat(G4int index, G4double energy);
0152
0153   G4int    GetOnePionIndex(G4double energy);
0154   G4double GetNuMuOnePionProb(G4int index, G4double energy);
0155
0156   G4double CalculateQEratioA( G4int Z, G4int A, G4double energy, G4int nepdg);
0157
0158   virtual void ModelDescription(std::ostream&) const;
0159
0160 protected:
0161
0162   G4ParticleDefinition* theMuonMinus;
0163   G4ParticleDefinition* theMuonPlus;
0164
0165   G4double fSin2tW;    // sin^2theta_Weinberg
0166   G4double fCutEnergy; // minimal recoil electron energy detected
0167
0168   G4int fNbin, fIndex, fEindex, fXindex, fQindex, fOnePionIndex, fPDGencoding;
0169   G4bool fCascade, fString, fProton, f2p2h, fBreak;
0170
0171   G4double fNuEnergy, fQ2, fQtransfer, fXsample;
0172
0173   G4double fM1, fM2, fMt, fMu, fW2,  fMpi, fW2pi, fMinNuEnergy, fDp, fTr;
0174
0175   G4double fEmu, fEmuPi, fEx, fMr, fCosTheta, fCosThetaPi, fQEratioA;
0176
0177   G4LorentzVector fLVh, fLVl, fLVt, fLVcpi;
0178
0179   G4GeneratorPrecompoundInterface* fPrecoInterface;
0180   G4PreCompoundModel*              fPreCompound;
0181   G4ExcitationHandler*             fDeExcitation;
0182
0183   G4Nucleus* fRecoil;
0184
0185   G4int fSecID;  // Creator model ID for the secondaries created by this model
0186
0187   static const G4int fResNumber;
0188   static const G4double fResMass[6]; // [fResNumber];
0189
0190   static const G4int fClustNumber;
0191
0192   static const G4double fMesMass[4];
0193   static const G4int    fMesPDG[4];
0194
0195   static const G4double fBarMass[4];
0196   static const G4int    fBarPDG[4];
0197
0198   static const G4double fNuMuResQ[50][50];
0199
0200
0201   static const G4double fNuMuEnergy[50];
0202   static const G4double fNuMuQeTotRat[50];
0203   static const G4double fOnePionEnergy[58];
0204   static const G4double fOnePionProb[58];
0205
0206   static const G4double fNuMuEnergyLogVector[50];
0207
0208   // KR sample distributions, X at E_nu and Q2 at E_nu and X
0209
0210   static G4double fNuMuXarrayKR[50][51];
0211   static G4double fNuMuXdistrKR[50][50];
0212   static G4double fNuMuQarrayKR[50][51][51];
0213   static G4double fNuMuQdistrKR[50][51][50];
0214
0215   // QEratio(Z,A,Enu)
0216
0217   static const G4double fQEnergy[50];
0218   static const G4double fANeMuQEratio[50];
0219   static const G4double fNeMuQEratio[50];
0220
0221 };
0222
0223
0224
0225 #endif