+++ /dev/null
-// SigmaExtraDim.h is a part of the PYTHIA event generator.
-// Copyright (C) 2012 Torbjorn Sjostrand.
-// Copyright (C) 2012 Stefan Ask for the *LED* routines.
-// PYTHIA is licenced under the GNU GPL version 2, see COPYING for details.
-// Please respect the MCnet Guidelines, see GUIDELINES for details.
-
-// Header file for extra-dimensional-process differential cross sections.
-// Contains classes derived from SigmaProcess via Sigma(1/2)Process.
-
-#ifndef Pythia8_SigmaExtraDim_H
-#define Pythia8_SigmaExtraDim_H
-
-#include "SigmaProcess.h"
-
-namespace Pythia8 {
-
-//==========================================================================
-
-// A derived class for g g -> G^* (excited graviton state).
-
-class Sigma1gg2GravitonStar : public Sigma1Process {
-
-public:
-
- // Constructor.
- Sigma1gg2GravitonStar() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Evaluate weight for G* decay angle.
- virtual double weightDecay( Event& process, int iResBeg, int iResEnd);
-
- // Info on the subprocess.
- virtual string name() const {return "g g -> G*";}
- virtual int code() const {return 5001;}
- virtual string inFlux() const {return "gg";}
- virtual int resonanceA() const {return idGstar;}
-
-private:
-
- // Parameters set at initialization or for current kinematics.
- bool eDsmbulk, eDvlvl;
- int idGstar;
- double mRes, GammaRes, m2Res, GamMRat, kappaMG, sigma;
-
- // Couplings between graviton and SM (indexed by particle id).
- double eDcoupling[27];
-
- // Pointer to properties of the particle species, to access decay channels.
- ParticleDataEntry* gStarPtr;
-
-};
-
-//==========================================================================
-
-// A derived class for f fbar -> G^* (excited graviton state).
-
-class Sigma1ffbar2GravitonStar : public Sigma1Process {
-
-public:
-
- // Constructor.
- Sigma1ffbar2GravitonStar() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat).
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Evaluate weight for G* decay angle.
- virtual double weightDecay( Event& process, int iResBeg, int iResEnd);
-
- // Info on the subprocess.
- virtual string name() const {return "f fbar -> G*";}
- virtual int code() const {return 5002;}
- virtual string inFlux() const {return "ffbarSame";}
- virtual int resonanceA() const {return idGstar;}
-
-private:
-
- // Parameters set at initialization or for current kinematics.
- bool eDsmbulk, eDvlvl;
- int idGstar;
- double mRes, GammaRes, m2Res, GamMRat, kappaMG, sigma0;
-
- // Couplings between graviton and SM (indexed by particle id).
- double eDcoupling[27];
-
- // Pointer to properties of the particle species, to access decay channels.
- ParticleDataEntry* gStarPtr;
-
-};
-
-//==========================================================================
-
-// A derived class for q qbar -> g^*/KK-gluon^* (excited kk-gluon state).
-
-class Sigma1qqbar2KKgluonStar : public Sigma1Process {
-
-public:
-
- // Constructor.
- Sigma1qqbar2KKgluonStar() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat).
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Evaluate weight for g* decay angle.
- virtual double weightDecay( Event& process, int iResBeg, int iResEnd);
-
- // Info on the subprocess.
- virtual string name() const {return "q qbar -> g*/KK-gluon*";}
- virtual int code() const {return 5006;}
- virtual string inFlux() const {return "qqbarSame";}
- virtual int resonanceA() const {return idKKgluon;}
-
-private:
-
- // Parameters set at initialization or for current kinematics.
- int idKKgluon;
- double mRes, GammaRes, m2Res, GamMRat;
- double sumSM, sumInt, sumKK, sigSM, sigInt, sigKK;
-
- // Couplings between kk gluon and SM (indexed by particle id).
- // Helicity dependent couplings. Use vector/axial-vector
- // couplings internally, gv/ga = 0.5 * (gL +/- gR).
- double eDgv[10], eDga[10];
-
- // Interference parameter.
- int interfMode;
-
- // Pointer to properties of the particle species, to access decay
- // channels.
- ParticleDataEntry* gStarPtr;
-
-};
-
-//==========================================================================
-
-// A derived class for g g -> G^* g (excited graviton state).
-
-class Sigma2gg2GravitonStarg : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2gg2GravitonStarg() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Evaluate weight: currently isotropic (except secondary top decay)..
- virtual double weightDecay( Event& process, int iResBeg, int iResEnd);
-
- // Info on the subprocess.
- virtual string name() const {return "g g -> G* g";}
- virtual int code() const {return 5003;}
- virtual string inFlux() const {return "gg";}
- virtual int id3Mass() const {return idGstar;}
-
-private:
-
- // Parameters set at initialization or for current kinematics.
- int idGstar;
- double mRes, GammaRes, m2Res, GamMRat, kappaMG, openFrac, sigma;
-
-};
-
-//==========================================================================
-
-// A derived class for q g -> G^* q (excited graviton state).
-
-class Sigma2qg2GravitonStarq : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2qg2GravitonStarq() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Evaluate weight: currently isotropic (except secondary top decay).
- virtual double weightDecay( Event& process, int iResBeg, int iResEnd);
-
- // Info on the subprocess.
- virtual string name() const {return "q g -> G* q";}
- virtual int code() const {return 5004;}
- virtual string inFlux() const {return "qg";}
- virtual int id3Mass() const {return idGstar;}
-
-private:
-
- // Parameters set at initialization or for current kinematics.
- int idGstar;
- double mRes, GammaRes, m2Res, GamMRat, kappaMG, openFrac, sigma;
-
-};
-
-//==========================================================================
-
-// A derived class for q qbar -> G^* g (excited graviton state).
-
-class Sigma2qqbar2GravitonStarg : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2qqbar2GravitonStarg() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Evaluate weight: currently isotropic (except secondary top decay).
- virtual double weightDecay( Event& process, int iResBeg, int iResEnd);
-
- // Info on the subprocess.
- virtual string name() const {return "q qbar -> G* g";}
- virtual int code() const {return 5005;}
- virtual string inFlux() const {return "qqbarSame";}
- virtual int id3Mass() const {return idGstar;}
-
-private:
-
- // Parameters set at initialization or for current kinematics.
- int idGstar;
- double mRes, GammaRes, m2Res, GamMRat, kappaMG, openFrac, sigma;
-
-};
-
-//==========================================================================
-
-// NOAM: A derived class for, f fbar -> (gamma/Z)_KKTower -> F Fbar,
-// for one heavy F.
-// Process provided by N. Hod et al. and is described in arXiv:XXXX.YYYY
-
-class Sigma2ffbar2TEVffbar : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2ffbar2TEVffbar(int idIn, int codeIn) : idNew(idIn), codeSave(codeIn) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat).
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Evaluate weight for W decay angles in top decay (else inactive).
- virtual double weightDecay( Event& process, int iResBeg, int iResEnd);
-
- // Info on the subprocess.
- virtual string name() const {return nameSave;}
- virtual int code() const {return codeSave;}
- virtual string inFlux() const {return "ffbarSame";}
- virtual bool isSChannel() const {return true;}
- virtual int idSChannel() const {return 5000023;}
- virtual int resonanceA() const {return 23;}
- virtual int resonanceB() const {return 5000023;}
- virtual int id3Mass() const {return idNew;}
- virtual int id4Mass() const {return idNew;}
- // Add phase-space sampling also around the Z_KK resonance.
- virtual int resonanceA();
- virtual int resonanceB();
-
-private:
-
- // Values stored for process type.
- string nameSave;
- int idNew, gmZmode, codeSave, nexcitationmax;
- bool isPhysical;
- double gPlusf, gMinusf, gPlusF, gMinusF, gPlusTop, gMinusTop,
- gPlus, gMinus, gf, gF;
- double mRes, m2Res, mStar, mTop, m2Top, mZKKn, m2ZKKn, m2gmKKn, mgmKKn,
- alphaemfixed;
- double helicityME2, coefTot, coefAngular;
- double mr, betaf, cosThe, openFracPair;
- double wgmKKFactor, wgmKKn, wZKKn,
- wZ0, ttbarwZKKn, ttbarwgmKKn,
- ttbarwFactorA, ttbarwFactorB;
- double phaseSpacemHatMin, phaseSpacemHatMax;
- complex gammaProp, resProp, gmPropKK, ZPropKK, totalProp;
- complex mI;
-};
-
-//==========================================================================
-
-// A derived class for g g -> U/G g (real graviton emission in
-// large extra dimensions or unparticle emission).
-
-class Sigma2gg2LEDUnparticleg : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2gg2LEDUnparticleg( bool Graviton ) : eDgraviton(Graviton) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return
- (eDgraviton ? "g g -> G g" : "g g -> U g") ;}
- virtual int code() const {return (eDgraviton ? 5021 : 5045);}
- virtual string inFlux() const {return "gg";}
- virtual int id3Mass() const {return 5000039;}
- virtual int id4Mass() const {return 21;}
-
-private:
-
- bool eDgraviton;
- int eDspin, eDnGrav, eDidG, eDcutoff;
- double mG, mGS, eDsigma0, eDdU, eDLambdaU, eDlambda, eDconstantTerm,
- eDtff, eDcf;
-
-};
-
-//==========================================================================
-
-// A derived class for q g -> U/G q (real graviton emission in
-// large extra dimensions or unparticle emission).
-
-class Sigma2qg2LEDUnparticleq : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2qg2LEDUnparticleq( bool Graviton) : eDgraviton(Graviton) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return
- (eDgraviton ? "q g -> G q" : "q g -> U q") ;}
- virtual int code() const {return (eDgraviton ? 5022 : 5046);}
- virtual string inFlux() const {return "qg";}
- virtual int id3Mass() const {return 5000039;}
-
-private:
-
- bool eDgraviton;
- int eDspin, eDnGrav, eDidG, eDcutoff;
- double mG, mGS, eDsigma0, eDdU, eDLambdaU, eDlambda, eDconstantTerm,
- eDtff, eDgf, eDcf;
-
-};
-
-//==========================================================================
-
-// A derived class for q qbar -> U/G g (real graviton emission in
-// large extra dimensions or unparticle emission).
-
-class Sigma2qqbar2LEDUnparticleg : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2qqbar2LEDUnparticleg( bool Graviton) : eDgraviton(Graviton) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return
- (eDgraviton ? "q qbar -> G g" : "q qbar -> U g") ;}
- virtual int code() const {return (eDgraviton ? 5023 : 5047);}
- virtual string inFlux() const {return "qqbarSame";}
- virtual int id3Mass() const {return 5000039;}
- virtual int id4Mass() const {return 21;}
-
-private:
-
- bool eDgraviton;
- int eDspin, eDnGrav, eDidG, eDcutoff;
- double mG, mGS, eDsigma0, eDdU, eDLambdaU, eDlambda, eDconstantTerm,
- eDtff, eDgf, eDcf;
-
-};
-
-//==========================================================================
-
-// A derived class for f fbar -> U/G Z (real graviton emission in
-// large extra dimensions or unparticle emission).
-
-class Sigma2ffbar2LEDUnparticleZ : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2ffbar2LEDUnparticleZ( bool Graviton) : eDgraviton(Graviton) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return
- (eDgraviton ? "f fbar -> G Z" : "f fbar -> U Z") ;}
- virtual int code() const {return (eDgraviton ? 5024 : 5041);}
- virtual string inFlux() const {return "ffbarSame";}
- virtual int id3Mass() const {return 5000039;}
- virtual int id4Mass() const {return 23;}
- virtual int resonanceA() const {return 23;}
- virtual int gmZmode() const {return 2;}
-
-private:
-
- // Constants: could only be changed in the code itself.
- static const double FIXRATIO;
-
- int eDspin, eDnGrav, eDcutoff, eDidG;
- bool eDgraviton;
- double eDdU, eDLambdaU, eDlambda, eDratio, eDlambdaPrime,
- eDtff, eDconstantTerm;
- double sHS, tHS, uHS, tHC, uHC, tHQ, uHQ, tHuH, mU, mUS, mZ, widZ,
- mZS, mwZS, thetaWRat, eDsigma0;
-
-};
-
-//==========================================================================
-
-// A derived class for f fbar -> U/G gamma (real graviton emission in
-// large extra dimensions or unparticle emission).
-
-class Sigma2ffbar2LEDUnparticlegamma : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2ffbar2LEDUnparticlegamma( bool Graviton) : eDgraviton(Graviton) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return
- (eDgraviton ? "f fbar -> G gamma" : "f fbar -> U gamma") ;}
- virtual int code() const {return (eDgraviton ? 5025 : 5042);}
- virtual string inFlux() const {return "ffbarSame";}
- virtual int id3Mass() const {return 5000039;}
- virtual int id4Mass() const {return 22;}
-
-private:
-
- // Constants: could only be changed in the code itself.
- static const double FIXRATIO;
-
- int eDspin, eDnGrav, eDcutoff, eDidG;
- bool eDgraviton;
- double eDdU, eDLambdaU, eDlambda, eDratio, eDlambdaPrime,
- eDtff, eDconstantTerm;
- double sHS, tHS, uHS, tHC, uHC, tHQ, uHQ, tHuH, mU, mUS, mZ, widZ,
- mZS, mwZS, thetaWRat, eDsigma0;
-
-};
-
-//==========================================================================
-
-// A derived class for f fbar -> (LED G*/U*) -> gamma gamma
-// (virtual graviton/unparticle exchange).
-
-class Sigma2ffbar2LEDgammagamma : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2ffbar2LEDgammagamma( bool Graviton) : eDgraviton(Graviton) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return
- (eDgraviton ? "f fbar -> (LED G*) -> gamma gamma"
- : "f fbar -> (U*) -> gamma gamma") ;}
- virtual int code() const {return (eDgraviton ? 5026 : 5043);}
- virtual string inFlux() const {return "ffbarSame";}
-
-private:
-
- int eDspin, eDcutoff, eDnGrav, eDnegInt;
- bool eDgraviton;
- double eDdU, eDLambdaU, eDlambda, eDlambda2chi,
- eDterm1, eDterm2, eDterm3, eDtff;
-
-};
-
-//==========================================================================
-
-// A derived class for g g -> (LED G*/U*) -> gamma gamma
-// (virtual graviton/unparticle exchange).
-
-class Sigma2gg2LEDgammagamma : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2gg2LEDgammagamma( bool Graviton) : eDgraviton(Graviton) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return (eDgraviton
- ? "g g -> (LED G*) -> gamma gamma" : "g g -> (U*) -> gamma gamma") ;}
- virtual int code() const {return (eDgraviton ? 5027 : 5044);}
- virtual string inFlux() const {return "gg";}
-
-private:
-
- int eDspin, eDcutoff, eDnGrav;
- bool eDgraviton;
- double eDdU, eDLambdaU, eDlambda, eDlambda2chi, eDsigma0, eDtff;
-
-};
-
-//==========================================================================
-
-// A derived class for f fbar -> (LED G*/U*) -> l lbar
-// (virtual graviton/unparticle exchange).
-// Does not include t-channel contributions relevant for e^+e^- to e^+e^-
-
-class Sigma2ffbar2LEDllbar : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2ffbar2LEDllbar( bool Graviton) : eDgraviton(Graviton) {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return
- (eDgraviton ? "f fbar -> (LED G*) -> l l" : "f fbar -> (U*) -> l l") ;}
- virtual int code() const {return (eDgraviton ? 5028 : 5048);}
- virtual string inFlux() const {return "ffbarSame";}
- virtual bool isSChannel() const {return true;}
-
-private:
-
- int eDspin, eDcutoff, eDnGrav,eDnxx, eDnxy, eDnegInt;
- bool eDgraviton;
- double eDdU, eDLambdaU, eDlambda, eDlambda2chi, eDtff,
- eDmZ, eDmZS, eDGZ, eDGZS, eDabsMeU, eDdenomPropZ, eDrePropGamma,
- eDrePropZ, eDimPropZ, eDabsAS, eDreA, eDreABW, eDpoly1, eDpoly2,
- eDpoly3;
-
-};
-
-//==========================================================================
-
-// A derived class for g g -> (LED G*/U*) -> l lbar
-// (virtual graviton/unparticle exchange).
-
-class Sigma2gg2LEDllbar : public Sigma2Process {
-
-public:
-
- // Constructor: bool Graviton = true, to use LED graviton settings.
- Sigma2gg2LEDllbar( bool Graviton) : eDgraviton(Graviton) {}
-
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section;
- // first step when inflavours unknown.
- virtual void sigmaKin();
-
- // Evaluate sigmaHat(sHat); second step for given inflavours.
- virtual double sigmaHat() {return eDsigma0;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return
- (eDgraviton ? "g g -> (LED G*) -> l l" : "g g -> (U*) -> l l") ;}
- virtual int code() const {return (eDgraviton ? 5029 : 5049);}
- virtual string inFlux() const {return "gg";}
-
-private:
-
- int eDspin, eDcutoff, eDnGrav;
- bool eDgraviton;
- double eDdU, eDLambdaU, eDlambda, eDlambda2chi, eDsigma0, eDtff;
-
-};
-
-//==========================================================================
-
-// A derived class for g g -> (LED G*) -> g g.
-
-class Sigma2gg2LEDgg : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2gg2LEDgg() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate d(sigmaHat)/d(tHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return "g g -> (LED G*) -> g g";}
- virtual int code() const {return 5030;}
- virtual string inFlux() const {return "gg";}
-
-private:
-
- // Values stored for colour flow selection.
- double sigTS, sigUS, sigTU, sigSum, sigma;
-
- // Model parameters.
- int eDopMode, eDnGrav, eDcutoff, eDnegInt;
- double eDMD, eDLambdaT, eDtff;
-
-};
-
-//==========================================================================
-
-// A derived class for g g -> (LED G*) -> q qbar.
-
-class Sigma2gg2LEDqqbar : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2gg2LEDqqbar() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate d(sigmaHat)/d(tHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return "g g -> (LED G*) -> q qbar (uds)";}
- virtual int code() const {return 5031;}
- virtual string inFlux() const {return "gg";}
-
-private:
-
- // Number of quarks to be considered in massless approximation.
- int nQuarkNew;
-
- // Values stored for colour flow selection.
- int idNew;
- double mNew, m2New, sigTS, sigUS, sigSum, sigma;
-
- // Model parameters.
- int eDopMode, eDnGrav, eDcutoff, eDnegInt;
- double eDMD, eDLambdaT, eDtff;
-
-};
-
-//==========================================================================
-
-// A derived class for q g -> (LED G*) -> q g.
-// Use massless approximation also for Q since no alternative.
-
-class Sigma2qg2LEDqg : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2qg2LEDqg() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate d(sigmaHat)/d(tHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return "q g -> (LED G*) -> q g";}
- virtual int code() const {return 5032;}
- virtual string inFlux() const {return "qg";}
-
-private:
-
- // Values stored for colour flow selection.
- double mNew, m2New, sigTS, sigTU, sigSum, sigma;
-
- // Model parameters.
- int eDopMode, eDnGrav, eDcutoff, eDnegInt;
- double eDMD, eDLambdaT, eDtff;
-
-};
-
-//==========================================================================
-
-// A derived class for q q(bar)' -> (LED G*) -> q q(bar)'.
-
-class Sigma2qq2LEDqq : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2qq2LEDqq() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate d(sigmaHat)/d(tHat).
- virtual double sigmaHat();
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return "q q(bar)' -> (LED G*) -> q q(bar)'";}
- virtual int code() const {return 5033;}
- virtual string inFlux() const {return "qq";}
-
- private:
-
- // Values stored for colour flow selection.
- double sigT, sigU, sigTU, sigST, sigSum;
- double sigGrT1, sigGrT2, sigGrU, sigGrTU, sigGrST;
-
- // Model parameters.
- int eDopMode, eDnGrav, eDcutoff, eDnegInt;
- double eDMD, eDLambdaT, eDtff;
-
-};
-
-//==========================================================================
-
-// A derived class for q qbar -> (LED G*) -> g g.
-
-class Sigma2qqbar2LEDgg : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2qqbar2LEDgg() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate d(sigmaHat)/d(tHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return "q qbar -> (LED G*) -> g g";}
- virtual int code() const {return 5034;}
- virtual string inFlux() const {return "qqbarSame";}
-
- private:
-
- // Values stored for colour flow selection.
- double sigTS, sigUS, sigSum, sigma;
-
- // Model parameters.
- int eDopMode, eDnGrav, eDcutoff, eDnegInt;
- double eDMD, eDLambdaT, eDtff;
-
-};
-
-//==========================================================================
-
-// A derived class for q qbar -> (LED G*) -> q' qbar'.
-
-class Sigma2qqbar2LEDqqbarNew : public Sigma2Process {
-
-public:
-
- // Constructor.
- Sigma2qqbar2LEDqqbarNew() {}
-
- // Initialize process.
- virtual void initProc();
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin();
-
- // Evaluate d(sigmaHat)/d(tHat).
- virtual double sigmaHat() {return sigma;}
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol();
-
- // Info on the subprocess.
- virtual string name() const {return "q qbar -> (LED G*) -> q' qbar' (uds)";}
- virtual int code() const {return 5035;}
- virtual string inFlux() const {return "qqbarSame";}
-
- private:
-
- // Number of quarks to be considered in massless approximation.
- int nQuarkNew;
-
- // Values stored for colour flow selection.
- int idNew;
- double mNew, m2New, sigS, sigma;
-
- // Model parameters.
- int eDopMode, eDnGrav, eDcutoff;
- double eDMD, eDLambdaT, eDtff;
-
-};
-
-//==========================================================================
-
-} // end namespace Pythia8
-
-#endif // Pythia8_SigmaExtraDim_H
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff