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G4FTFModel.hh
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25 //
26 //
27 //
28 // Class Description
29 // Final state production code for hadron inelastic scattering above 3 GeV
30 // based on the modeling ansatz used in FRITIOF.
31 // To be used in your physics list in case you need this physics.
32 // In this case you want to register an object of this class with an object
33 // of G4TheoFSGenerator.
34 // Class Description - End
35 
36 #ifndef G4FTFModel_h
37 #define G4FTFModel_h 1
38 
39 // ------------------------------------------------------------
40 // GEANT 4 class header file
41 //
42 // ---------------- G4FTFModel ----------------
43 // by Gunter Folger, May 1998.
44 // class implementing the excitation in the FTF Parton String Model
45 // ------------------------------------------------------------
46 
47 #include "G4VPartonStringModel.hh"
48 #include "G4FTFParameters.hh"
49 #include "G4FTFParticipants.hh"
50 #include "G4ExcitedStringVector.hh"
52 #include "G4ElasticHNScattering.hh"
53 #include "G4FTFAnnihilation.hh"
54 #include "G4Proton.hh"
55 #include "G4Neutron.hh"
56 
57 class G4VSplitableHadron;
58 class G4ExcitedString;
59 
60 
62  public:
63  G4FTFModel( const G4String& modelName = "FTF" );
64  ~G4FTFModel();
65 
66  void Init( const G4Nucleus& aNucleus, const G4DynamicParticle& aProjectile );
71 
72  virtual void ModelDescription( std::ostream& ) const;
73 
74  private:
75  G4FTFModel( const G4FTFModel& right );
76  const G4FTFModel& operator=( const G4FTFModel& right );
77  G4bool operator==( const G4FTFModel& right ) const;
78  G4bool operator!=( const G4FTFModel& right ) const;
79 
80  void StoreInvolvedNucleon();
81  void ReggeonCascade();
84  void BuildStrings( G4ExcitedStringVector* strings );
85  void GetResiduals();
86 
87  G4bool AdjustNucleons( G4VSplitableHadron* SelectedAntiBaryon,
88  G4Nucleon* ProjectileNucleon,
89  G4VSplitableHadron* SelectedTargetNucleon,
90  G4Nucleon* TargetNucleon,
91  G4bool Annihilation );
92  // The "AdjustNucleons" method uses the following struct and 3 new utility methods:
93  struct CommonVariables {
96  G4double SqrtS = 0.0, S = 0.0, SumMasses = 0.0,
99  Mprojectile = 0.0, M2projectile = 0.0, Pzprojectile = 0.0, Eprojectile = 0.0,
101  Mtarget = 0.0, M2target = 0.0, Pztarget = 0.0, Etarget = 0.0, WminusTarget = 0.0,
109  };
111  G4VSplitableHadron* SelectedAntiBaryon,
112  G4Nucleon* ProjectileNucleon,
113  G4VSplitableHadron* SelectedTargetNucleon,
114  G4Nucleon* TargetNucleon,
115  G4bool Annihilation,
119  void AdjustNucleonsAlgorithm_afterSampling( G4int interactionCase,
120  G4VSplitableHadron* SelectedAntiBaryon,
121  G4VSplitableHadron* SelectedTargetNucleon,
123 
124  G4ThreeVector GaussianPt( G4double AveragePt2, G4double maxPtSquare ) const;
125 
126  G4bool ComputeNucleusProperties( G4V3DNucleus* nucleus, G4LorentzVector& nucleusMomentum,
127  G4LorentzVector& residualMomentum, G4double& sumMasses,
128  G4double& residualExcitationEnergy, G4double& residualMass,
129  G4int& residualMassNumber, G4int& residualCharge );
130  // Utility method used by PutOnMassShell.
131 
132  G4bool GenerateDeltaIsobar( const G4double sqrtS, const G4int numberOfInvolvedNucleons,
133  G4Nucleon* involvedNucleons[], G4double& sumMasses );
134  // Utility method used by PutOnMassShell.
135 
136  G4bool SamplingNucleonKinematics( G4double averagePt2, const G4double maxPt2,
137  G4double dCor, G4V3DNucleus* nucleus,
138  const G4LorentzVector& pResidual,
139  const G4double residualMass, const G4int residualMassNumber,
140  const G4int numberOfInvolvedNucleons,
141  G4Nucleon* involvedNucleons[], G4double& mass2 );
142 
143  // Utility method used by PutOnMassShell.
144 
145  G4bool CheckKinematics( const G4double sValue, const G4double sqrtS,
146  const G4double projectileMass2, const G4double targetMass2,
147  const G4double nucleusY, const G4bool isProjectileNucleus,
148  const G4int numberOfInvolvedNucleons, G4Nucleon* involvedNucleons[],
149  G4double& targetWminus, G4double& projectileWplus, G4bool& success );
150  // Utility method used by PutOnMassShell.
151 
152  G4bool FinalizeKinematics( const G4double w, const G4bool isProjectileNucleus,
153  const G4LorentzRotation& boostFromCmsToLab,
154  const G4double residualMass, const G4int residualMassNumber,
155  const G4int numberOfInvolvedNucleons,
156  G4Nucleon* involvedNucleons[],
157  G4LorentzVector& residual4Momentum );
158  // Utility method used by PutOnMassShell.
159 
162 
165 
168 
173 
174  std::vector< G4VSplitableHadron* > theAdditionalString;
175 
178 
183 
188 };
189 
190 
193 }
194 
195 
198 }
199 
200 
203 }
204 
205 #endif
206