| 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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| 27 | // $Id: G4Quasmon.hh,v 1.46 2009/11/16 18:15:01 mkossov Exp $ |
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| 28 | // GEANT4 tag $Name: hadr-chips-V09-03-08 $ |
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| 29 | // |
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| 30 | // ---------------- G4Quasmon ---------------- |
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| 31 | // by Mikhail Kossov, July 1999. |
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| 32 | // class for a Quasmon used by the CHIPS Model |
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| 33 | // ------------------------------------------------------------ |
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| 34 | // Short description: If partons from the G4QPartonPair are close in |
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| 35 | // rapidity, they create Quasmons, but if they are far in the rapidity |
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| 36 | // space, they can not interact directly. Say the bottom parton (quark) |
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| 37 | // has rapidity 0, and the top parton (antiquark) has rapidity 8, then |
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| 38 | // the top quark splits in two by radiating gluon, and each part has |
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| 39 | // rapidity 4, then the gluon splits in quark-antiquark pair (rapidity |
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| 40 | // 2 each), and then the quark gadiates anothe gluon and reachs rapidity |
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| 41 | // 1. Now it can interact with the bottom antiquark, creating a Quasmon |
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| 42 | // or a hadron. The intermediate partons is the string ladder. |
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| 43 | // --------------------------------------------------------------------- |
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| 44 | |
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| 45 | #ifndef G4Quasmon_h |
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| 46 | #define G4Quasmon_h 1 |
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| 47 | |
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| 48 | // Standard G4-headers |
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| 49 | #include "G4ios.hh" |
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| 50 | #include "globals.hh" |
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| 51 | #include "G4ThreeVector.hh" |
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| 52 | #include "G4LorentzVector.hh" |
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| 53 | #include "G4LorentzRotation.hh" |
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| 54 | //CHIPS-headers |
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| 55 | #include "G4QCHIPSWorld.hh" |
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| 56 | #include "G4QChipolino.hh" |
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| 57 | #include "G4QHadronVector.hh" |
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| 58 | #include "G4QNucleus.hh" |
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| 59 | |
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| 60 | class G4Quasmon |
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| 61 | { |
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| 62 | public: |
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| 63 | G4Quasmon(G4QContent qQCont = G4QContent(0,0,0,0,0,0), |
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| 64 | G4LorentzVector q4M = G4LorentzVector(0.,0.,0.,0.), |
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| 65 | G4LorentzVector ph4M = G4LorentzVector(0.,0.,0.,0.));// Direct Constructor |
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| 66 | G4Quasmon(const G4Quasmon& right); // Copy Quasmon by object |
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| 67 | G4Quasmon(G4Quasmon* right); // Copy Quasmon by pointer |
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| 68 | |
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| 69 | ~G4Quasmon(); // Public Destructor |
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| 70 | |
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| 71 | // Overloaded Operators |
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| 72 | const G4Quasmon& operator=(const G4Quasmon& right); |
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| 73 | G4bool operator==(const G4Quasmon &right) const; |
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| 74 | G4bool operator!=(const G4Quasmon &right) const; |
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| 75 | |
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| 76 | // Static functions |
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| 77 | static void SetParameters(G4double temper=180., G4double ssin2g=.3, G4double etaetap=.3); |
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| 78 | static void SetTemper(G4double temperature); |
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| 79 | static void SetSOverU(G4double ssin2g); |
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| 80 | static void SetEtaSup(G4double etaetap); |
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| 81 | static void OpenElectromagneticDecays(); |
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| 82 | static void CloseElectromagneticDecays(); |
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| 83 | |
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| 84 | //Selectors |
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| 85 | G4double GetTemper() const; |
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| 86 | G4double GetSOverU() const; |
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| 87 | G4double GetEtaSup() const; |
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| 88 | G4LorentzVector Get4Momentum() const; |
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| 89 | G4QContent GetQC() const; |
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| 90 | G4QPDGCode GetQPDG() const; |
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| 91 | G4int GetStatus() const; |
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| 92 | G4int GetCharge() const; |
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| 93 | G4int GetBaryonNumber() const; |
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| 94 | G4int GetStrangeness() const; |
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| 95 | |
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| 96 | //Modifiers |
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| 97 | void Set4Momentum(G4LorentzVector Q4M) {q4Mom=Q4M;} // Set new value for the Quasmon 4mom |
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| 98 | void SetQC(G4QContent QQC) {valQ=QQC;} // Set new Quark Cont for the Quasmon |
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| 99 | void Boost(const G4LorentzVector& theBoost); // Boosts hadron's 4Momentum using 4M |
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| 100 | void Boost(const G4ThreeVector& B){q4Mom.boost(B);} // Boosts 4-Momentum using v/c |
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| 101 | // Public wrapper for HadronizeQuasmon(,) |
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| 102 | G4QHadronVector* Fragment(G4QNucleus& nucEnviron, G4int nQ = 1); |
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| 103 | G4QHadronVector* DecayQuasmon(); // Decay Quasmon if it's Res or Chipo |
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| 104 | G4QHadronVector* DecayQHadron(G4QHadron* hadron); // Decay QHadron if it's Res or Chipo |
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| 105 | void ClearOutput(); // Clear but not destroy the output |
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| 106 | void InitQuasmon(const G4QContent& qQCont, const G4LorentzVector& q4M); |
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| 107 | void IncreaseBy(const G4Quasmon* pQuasm); // as operator+= but by pointer |
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| 108 | void IncreaseBy(G4QContent& qQCont, const G4LorentzVector& q4M); |
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| 109 | void ClearQuasmon(); // Clear Quasmon (status=0) |
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| 110 | void KillQuasmon(); // Kill Quasmon (status=0) |
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| 111 | G4int CalculateNumberOfQPartons(G4double qMass); |
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| 112 | |
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| 113 | private: |
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| 114 | G4QHadronVector HadronizeQuasmon(G4QNucleus& qEnv, G4int nQ=1); // + new Neuclear Envir |
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| 115 | G4double GetRandomMass(G4int PDGCode, G4double maxM); |
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| 116 | void ModifyInMatterCandidates(); |
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| 117 | void CalculateHadronizationProbabilities(G4double excE, G4double kQ, |
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| 118 | G4LorentzVector k4M, G4bool piF, |
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| 119 | G4bool gaF, G4bool first=false); |
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| 120 | void FillHadronVector(G4QHadron* qHadron); |
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| 121 | G4int RandomPoisson(G4double meanValue); |
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| 122 | G4double GetQPartonMomentum(G4double mMinResidual2, G4double mCandidate2); |
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| 123 | G4bool CheckGroundState(G4bool corFlag=false); // Forbid correction by default |
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| 124 | void KillEnvironment(); // Kill Environment (Z,N,S=0,LV=0) |
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| 125 | |
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| 126 | // Body |
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| 127 | private: |
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| 128 | // Static Parameters |
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| 129 | static G4double Temperature; // Quasmon Temperature |
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| 130 | static G4double SSin2Gluons; // Percent of ssbar sea in a constituen gluon |
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| 131 | static G4double EtaEtaprime; // Part of eta-prime in all etas |
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| 132 | static G4bool WeakDecays; // Flag for opening WeakDecays (notUsed: allAreClosed) |
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| 133 | static G4bool ElMaDecays; // Flag for opening ElectroMagDecays (true by default) |
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| 134 | // Hadronic input |
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| 135 | G4LorentzVector q4Mom; // 4-momentum of the Quasmon +++++ |
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| 136 | G4QContent valQ; // Quark Content of the Quasmon +++++ |
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| 137 | G4QNucleus theEnvironment;// Nuclear (or Vacuum) Environment around the Quasmon |
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| 138 | // Output |
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| 139 | G4int status; // -1-Panic,0-Done,1-FilledSomething,2-DidNothing,3-StopedByCB,4-JustBorn |
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| 140 | G4QHadronVector theQHadrons; // Vector of generated secondary hadrons +++++ |
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| 141 | // Internal working objects (@@ it is possible to sacrifice some of them in future) |
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| 142 | G4QCHIPSWorld* theWorld; // Pointer to the CHIPS World |
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| 143 | G4LorentzVector phot4M; // Gamma 4-momentum for interaction with a quark-parton |
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| 144 | G4int nBarClust; // Maximum barion number of clusters in the Environment |
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| 145 | G4int nOfQ; // a#of quark-partons in theQuasmon (to accelerate) |
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| 146 | G4QCandidateVector theQCandidates;// Vector of possible secondary hadrons/clusters(*del*) |
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| 147 | G4double f2all; // Ratio of free nucleons to free+freeInDense nucleons |
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| 148 | G4double rEP; // E+p for the Residual Coloured Quasmon im LS +++++ |
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| 149 | G4double rMo; // p for the Residual Coloured Quasmon im LS +++++ |
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| 150 | G4double totMass; // Mass of totalCompoundSys: curQuasmon+curEnvironment |
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| 151 | G4int bEn; // BaryoNumber of the Limit Active Nuclear Environment |
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| 152 | G4double mbEn; // Mass of the LimActNucEnv |
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| 153 | G4LorentzVector bEn4M; // 4-momentum of the LimitActiveNuclearEnviron |
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| 154 | G4QContent bEnQC; // QuarkContent of the LimitActiveNuclEnv |
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| 155 | }; |
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| 156 | |
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| 157 | inline G4bool G4Quasmon::operator==(const G4Quasmon &rhs) const {return this == &rhs;} |
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| 158 | inline G4bool G4Quasmon::operator!=(const G4Quasmon &rhs) const {return this != &rhs;} |
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| 159 | inline G4double G4Quasmon::GetTemper() const {return Temperature;} |
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| 160 | inline G4double G4Quasmon::GetSOverU() const {return SSin2Gluons;} |
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| 161 | inline G4double G4Quasmon::GetEtaSup() const {return EtaEtaprime;} |
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| 162 | inline G4LorentzVector G4Quasmon::Get4Momentum() const {return q4Mom;} |
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| 163 | inline G4QContent G4Quasmon::GetQC() const {return valQ;} |
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| 164 | inline G4int G4Quasmon::GetCharge() const{return valQ.GetCharge();} |
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| 165 | inline G4int G4Quasmon::GetBaryonNumber() const{return valQ.GetBaryonNumber();} |
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| 166 | inline G4int G4Quasmon::GetStrangeness() const{return valQ.GetStrangeness();} |
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| 167 | inline G4QPDGCode G4Quasmon::GetQPDG() const {return G4QPDGCode(valQ);} |
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| 168 | inline G4int G4Quasmon::GetStatus() const {return status;} |
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| 169 | inline void G4Quasmon::ClearOutput() |
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| 170 | {std::for_each(theQHadrons.begin(), theQHadrons.end(), DeleteQHadron()); |
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| 171 | theQHadrons.clear(); |
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| 172 | } |
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| 173 | inline void G4Quasmon::KillEnvironment() |
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| 174 | {theEnvironment=G4QNucleus(0,0,0,G4LorentzVector(0.,0.,0.,0.));} |
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| 175 | inline G4double G4Quasmon::GetRandomMass(G4int PDG, G4double maxM) |
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| 176 | { |
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| 177 | G4QParticle* part = theWorld->GetQParticle(PDG); |
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| 178 | return G4QHadron(part, maxM).GetMass(); |
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| 179 | } |
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| 180 | |
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| 181 | inline void G4Quasmon::IncreaseBy(const G4Quasmon* pQuasm) |
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| 182 | { |
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| 183 | valQ += pQuasm->GetQC(); |
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| 184 | q4Mom += pQuasm->Get4Momentum(); |
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| 185 | status= 3; |
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| 186 | } |
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| 187 | inline void G4Quasmon::IncreaseBy(G4QContent& qQCont, const G4LorentzVector& q4M) |
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| 188 | { |
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| 189 | valQ += qQCont; |
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| 190 | q4Mom += q4M; |
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| 191 | status= 3; |
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| 192 | } |
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| 193 | |
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| 194 | inline void G4Quasmon::InitQuasmon(const G4QContent& qQCont, const G4LorentzVector& q4M) |
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| 195 | { |
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| 196 | valQ = qQCont; |
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| 197 | q4Mom = q4M; |
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| 198 | status= 3; |
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| 199 | } |
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| 200 | |
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| 201 | inline void G4Quasmon::ClearQuasmon() |
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| 202 | { |
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| 203 | static const G4QContent zeroQC(0,0,0,0,0,0); |
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| 204 | static const G4LorentzVector nothing(0.,0.,0.,0.); |
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| 205 | phot4M= nothing; |
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| 206 | valQ = zeroQC; |
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| 207 | q4Mom = nothing; |
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| 208 | status= 0; |
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| 209 | std::for_each(theQCandidates.begin(), theQCandidates.end(), DeleteQCandidate()); |
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| 210 | theQCandidates.clear(); |
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| 211 | |
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| 212 | } |
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| 213 | |
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| 214 | inline void G4Quasmon::KillQuasmon() |
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| 215 | { |
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| 216 | ClearQuasmon(); |
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| 217 | ClearOutput(); |
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| 218 | } |
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| 219 | |
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| 220 | #endif |
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| 221 | |
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| 222 | |
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| 223 | |
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| 224 | |
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| 225 | |
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