[819] | 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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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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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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[962] | 27 | // $Id: G4VLongitudinalStringDecay.hh,v 1.6 2008/06/23 08:35:54 vuzhinsk Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[819] | 29 | // Maxim Komogorov |
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| 30 | // |
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| 31 | // ----------------------------------------------------------------------------- |
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| 32 | // GEANT 4 class implementation file |
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| 33 | // |
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| 34 | // History: first implementation, Maxim Komogorov, 1-Jul-1998 |
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| 35 | // ----------------------------------------------------------------------------- |
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| 36 | #ifndef G4VLongitudinalStringDecay_h |
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| 37 | #define G4VLongitudinalStringDecay_h 1 |
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| 38 | #include "G4VStringFragmentation.hh" |
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| 39 | #include "G4DynamicParticle.hh" |
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| 40 | #include "G4KineticTrack.hh" |
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| 41 | #include "G4KineticTrackVector.hh" |
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| 42 | #include "G4HadronBuilder.hh" |
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| 43 | |
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| 44 | class G4FragmentingString; |
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[962] | 45 | //************************************************************************************** |
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[819] | 46 | |
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| 47 | class G4VLongitudinalStringDecay |
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| 48 | { |
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| 49 | public: |
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[962] | 50 | G4VLongitudinalStringDecay(); |
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[819] | 51 | virtual ~G4VLongitudinalStringDecay(); |
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| 52 | |
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| 53 | private: |
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[962] | 54 | |
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[819] | 55 | int operator==(const G4VLongitudinalStringDecay &right) const; |
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| 56 | int operator!=(const G4VLongitudinalStringDecay &right) const; |
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| 57 | |
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| 58 | public: |
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| 59 | virtual G4KineticTrackVector* FragmentString(const G4ExcitedString& theString)=0; |
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[962] | 60 | |
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| 61 | protected: |
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| 62 | |
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| 63 | // For changing Mass Cut used for selection of very small mass strings |
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| 64 | virtual void SetMassCut(G4double aValue); |
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| 65 | |
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| 66 | // For handling a string with very low mass |
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| 67 | G4KineticTrackVector * LightFragmentationTest(const G4ExcitedString * const theString); |
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| 68 | |
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| 69 | // To store created quarks or 2 last hadrons |
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| 70 | typedef std::pair<G4ParticleDefinition*, G4ParticleDefinition*> pDefPair; |
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| 71 | |
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| 72 | // For creation of hadrons from given quark pair |
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| 73 | typedef G4ParticleDefinition * (G4HadronBuilder::*Pcreate) |
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| 74 | (G4ParticleDefinition*, G4ParticleDefinition*); |
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| 75 | |
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| 76 | //----------------------------------------------------------------------------- |
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| 77 | // Used by LightFragmentationTest for estimation of lowest possible mass of |
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| 78 | // given quark system |
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| 79 | G4double FragmentationMass(const G4FragmentingString * const string, |
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| 80 | Pcreate build=0, |
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| 81 | pDefPair * pdefs=0); |
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| 82 | |
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| 83 | G4ParticleDefinition* FindParticle(G4int Encoding); |
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| 84 | |
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| 85 | virtual void Sample4Momentum(G4LorentzVector* Mom, G4double Mass, |
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| 86 | G4LorentzVector* AntiMom, G4double AntiMass, |
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| 87 | G4double InitialMass)=0; |
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| 88 | //----------------------------------------------------------------------------- |
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| 89 | // For decision on continue or stop string fragmentation |
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| 90 | virtual G4bool StopFragmenting(const G4FragmentingString * const string)=0; |
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| 91 | virtual G4bool IsFragmentable(const G4FragmentingString * const string)=0; |
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| 92 | |
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| 93 | // If a string can not fragment, make last break into 2 hadrons |
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| 94 | virtual G4bool SplitLast(G4FragmentingString * string, |
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| 95 | G4KineticTrackVector * LeftVector, |
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| 96 | G4KineticTrackVector * RightVector)=0; |
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| 97 | //----------------------------------------------------------------------------- |
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| 98 | |
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| 99 | // If a string fragments, do the following |
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| 100 | |
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| 101 | // For transver of a string to its CMS frame |
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| 102 | G4ExcitedString *CPExcited(const G4ExcitedString& string); |
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| 103 | |
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| 104 | G4KineticTrack * Splitup(G4FragmentingString *string, |
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| 105 | G4FragmentingString *&newString); |
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| 106 | |
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| 107 | G4ParticleDefinition * QuarkSplitup(G4ParticleDefinition* decay, |
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| 108 | G4ParticleDefinition *&created); |
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| 109 | |
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| 110 | G4ParticleDefinition * DiQuarkSplitup(G4ParticleDefinition* decay, |
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| 111 | G4ParticleDefinition *&created); |
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| 112 | |
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| 113 | pDefPair CreatePartonPair(G4int NeedParticle, G4bool AllowDiquarks=true); |
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| 114 | |
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| 115 | public: |
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| 116 | // used by G4VKinkyStringDecy.. |
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| 117 | G4int SampleQuarkFlavor(void); |
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| 118 | G4ThreeVector SampleQuarkPt(); |
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| 119 | |
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| 120 | protected: |
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| 121 | |
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| 122 | //----------------------------------------------------------------------------- |
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| 123 | // For determination of kinematical properties of created hadron |
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| 124 | // virtual G4LorentzVector * SplitEandP(G4ParticleDefinition * pHadron, // Uzhi |
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| 125 | // G4FragmentingString * string )=0; // Uzhi |
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| 126 | |
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| 127 | virtual G4LorentzVector * SplitEandP(G4ParticleDefinition * pHadron, // Uzhi |
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| 128 | G4FragmentingString * string, // Uzhi |
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| 129 | G4FragmentingString * newString )=0;// Uzhi |
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| 130 | |
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| 131 | virtual G4double GetLightConeZ(G4double zmin, G4double zmax, |
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| 132 | G4int PartonEncoding, |
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| 133 | G4ParticleDefinition* pHadron, |
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| 134 | G4double Px, G4double Py ) = 0; |
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| 135 | |
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| 136 | void CalculateHadronTimePosition(G4double theInitialStringMass, |
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| 137 | G4KineticTrackVector *); |
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| 138 | |
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| 139 | // Used for some test purposes ------------------------------------------------ |
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| 140 | void ConstructParticle(); |
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| 141 | |
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| 142 | G4ParticleDefinition* CreateHadron(G4int id1, G4int id2, |
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| 143 | G4bool theGivenSpin, G4int theSpin); |
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[819] | 144 | |
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[962] | 145 | //----------------------------------------------------------------------------- |
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| 146 | public: |
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| 147 | |
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[819] | 148 | G4KineticTrackVector* DecayResonans (G4KineticTrackVector* aHadrons); |
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[962] | 149 | |
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[819] | 150 | void SetSigmaTransverseMomentum(G4double aQT); |
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| 151 | void SetStrangenessSuppression(G4double aValue); |
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| 152 | void SetDiquarkSuppression(G4double aValue); |
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| 153 | void SetDiquarkBreakProbability(G4double aValue); |
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| 154 | |
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| 155 | void SetVectorMesonProbability(G4double aValue); |
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| 156 | void SetSpinThreeHalfBarionProbability(G4double aValue); |
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| 157 | |
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| 158 | void SetScalarMesonMixings( std::vector<G4double> aVector); |
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| 159 | void SetVectorMesonMixings( std::vector<G4double> aVector); |
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| 160 | |
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[962] | 161 | void SetStringTensionParameter(G4double aValue); // Uzhi 20 June 08 |
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| 162 | |
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[819] | 163 | //private: |
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| 164 | protected: |
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| 165 | G4double GetDiquarkSuppress() {return DiquarkSuppress;}; |
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| 166 | G4double GetDiquarkBreakProb() {return DiquarkBreakProb;}; |
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| 167 | G4double GetStrangeSuppress() {return StrangeSuppress;}; |
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| 168 | G4double GetClusterMass() {return ClusterMass;}; |
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| 169 | G4int GetClusterLoopInterrupt() {return ClusterLoopInterrupt;}; |
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[962] | 170 | |
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| 171 | G4double GetStringTensionParameter() {return Kappa;}; // Uzhi 20 June 08 |
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[819] | 172 | |
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| 173 | //private: |
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| 174 | protected: |
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| 175 | G4double MassCut; |
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| 176 | G4double ClusterMass; |
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| 177 | G4double SigmaQT; // sigma_q_t is quark transverse momentum distribution parameter |
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| 178 | G4double DiquarkSuppress; // is Diquark suppression parameter |
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| 179 | G4double DiquarkBreakProb; // is Diquark breaking probability |
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| 180 | G4double SmoothParam; // model parameter |
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| 181 | G4double StrangeSuppress ; |
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| 182 | G4int StringLoopInterrupt; |
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| 183 | G4int ClusterLoopInterrupt; |
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| 184 | G4int SideOfDecay; |
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| 185 | G4HadronBuilder *hadronizer; |
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| 186 | |
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| 187 | G4double pspin_meson; |
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| 188 | G4double pspin_barion; |
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| 189 | std::vector<G4double> vectorMesonMix; |
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| 190 | std::vector<G4double> scalarMesonMix; |
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| 191 | |
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| 192 | G4bool PastInitPhase; |
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| 193 | |
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[962] | 194 | G4double Kappa; // String tension parameter // Uzhi 20 June 08 |
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| 195 | |
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[819] | 196 | // G4double MinFragmentationMass(G4ExcitedString * theString, |
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| 197 | // G4ParticleDefinition*& Hadron1, |
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| 198 | // G4ParticleDefinition*& Hadron2); |
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| 199 | |
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| 200 | }; |
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| 201 | |
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[962] | 202 | //************************************************************************************* |
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[819] | 203 | // Class G4VLongitudinalStringDecay |
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| 204 | #endif |
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