| 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 | #ifndef G4QGSMSplitableHadron_h
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| 27 | #define G4QGSMSplitableHadron_h 1
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| 28 |
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| 29 | #include "G4VSplitableHadron.hh"
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| 30 | #include "G4PartonVector.hh"
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| 31 | #include "G4MesonSplitter.hh"
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| 32 | #include "G4BaryonSplitter.hh"
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| 33 | #include "Randomize.hh"
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| 34 | #include <deque>
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| 35 |
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| 36 | // based on prototype by Maxim Komogorov
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| 37 | // Splitting into methods, and centralizing of model parameters HPW Feb 1999
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| 38 | // continued clean-up of interfaces and algorithms HPW 1999.
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| 39 | // Redesign of data structures and algorithms HPW Feb 1999
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| 40 |
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| 41 | class G4QGSMSplitableHadron : public G4VSplitableHadron
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| 42 | {
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| 43 |
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| 44 | public:
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| 45 | G4QGSMSplitableHadron();
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| 46 | G4QGSMSplitableHadron(const G4ReactionProduct & aPrimary);
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| 47 | G4QGSMSplitableHadron(const G4ReactionProduct & aPrimary, G4bool Direction);
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| 48 | G4QGSMSplitableHadron(const G4Nucleon & aNucleon);
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| 49 | G4QGSMSplitableHadron(const G4Nucleon & aNucleon, G4bool Direction);
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| 50 |
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| 51 | virtual ~G4QGSMSplitableHadron();
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| 52 |
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| 53 | const G4QGSMSplitableHadron & operator=(const G4QGSMSplitableHadron &right);
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| 54 |
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| 55 | virtual void SplitUp();
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| 56 | virtual G4Parton * GetNextParton();
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| 57 | virtual G4Parton * GetNextAntiParton();
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| 58 |
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| 59 | private:
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| 60 | void InitParameters();
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| 61 | void DiffractiveSplitUp();
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| 62 | void SoftSplitUp();
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| 63 | G4ThreeVector GaussianPt(G4double widthSquare, G4double maxPtSquare);
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| 64 | void GetValenceQuarkFlavors(const G4ParticleDefinition * aPart,
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| 65 | G4Parton *& Parton1, G4Parton *& Parton2);
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| 66 | G4Parton * BuildSeaQuark(G4bool isAntiQuark, G4int aPDGCode, G4int nSeaPair);
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| 67 | G4double SampleX(G4double anXmin, G4int nSea, G4int theTotalSea, G4double aBeta);
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| 68 |
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| 69 | private:
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| 70 | // aggregated data
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| 71 | G4bool Direction; // FALSE is target. - candidate for more detailed design. @@@@ HPW
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| 72 |
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| 73 | std::deque<G4Parton *> Color;
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| 74 | std::deque<G4Parton *> AntiColor;
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| 75 | private:
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| 76 | // associated classes
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| 77 | G4MesonSplitter theMesonSplitter;
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| 78 | G4BaryonSplitter theBaryonSplitter;
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| 79 |
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| 80 | private:
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| 81 | // model parameters
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| 82 | G4double alpha;
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| 83 | G4double beta;
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| 84 | G4double theMinPz;
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| 85 | G4double StrangeSuppress;
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| 86 | G4double sigmaPt;
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| 87 | G4double widthOfPtSquare;
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| 88 | G4double minTransverseMass;
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| 89 | };
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| 90 |
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| 91 | inline G4Parton* G4QGSMSplitableHadron::GetNextParton()
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| 92 | {
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| 93 | if(Color.size()==0) return 0;
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| 94 | G4Parton * result = Color.back();
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| 95 | Color.pop_back();
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| 96 | return result;
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| 97 | }
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| 98 |
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| 99 | inline G4Parton* G4QGSMSplitableHadron::GetNextAntiParton()
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| 100 | {
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| 101 | if(AntiColor.size() == 0) return 0;
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| 102 | G4Parton * result = AntiColor.front();
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| 103 | AntiColor.pop_front();
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| 104 | return result;
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| 105 | }
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| 106 |
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| 107 | #endif
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| 108 |
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| 109 |
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