+++ /dev/null
-// SigmaProcess.h is a part of the PYTHIA event generator.
-// Copyright (C) 2012 Torbjorn Sjostrand.
-// 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 hard-process differential cross sections.
-// SigmaProcess: base class for cross sections.
-// Sigma0Process: base class for unresolved processes, derived from above.
-// Sigma1Process: base class for 2 -> 1 processes, derived from above.
-// Sigma2Process: base class for 2 -> 2 processes, derived from above.
-// Sigma3Process: base class for 2 -> 3 processes, derived from above.
-// SigmaLHAProcess: wrapper class for Les Houches Accord external input.
-// Actual physics processes are found in separate files:
-// SigmaQCD for QCD processes;
-// SigmaEW for electroweak processes (including photon production);
-// SigmaOnia for charmonium and bottomonium processes;
-// SigmaHiggs for Higgs processes;
-// SigmaSUSY for supersymmetric production;
-// SigmaLeftRightSym for processes in left-right-symmetric scenarios;
-// SigmaLeptoquark for leptoquark production.
-// SigmaExtraDim for processes in scenarios for extra dimensions;
-// SigmaGeneric for generic scalar/fermion/vector pair production.
-
-#ifndef Pythia8_SigmaProcess_H
-#define Pythia8_SigmaProcess_H
-
-#include "Basics.h"
-#include "BeamParticle.h"
-#include "Event.h"
-#include "Info.h"
-#include "LesHouches.h"
-#include "ParticleData.h"
-#include "PartonDistributions.h"
-#include "PythiaComplex.h"
-#include "PythiaStdlib.h"
-#include "ResonanceWidths.h"
-#include "Settings.h"
-#include "SigmaTotal.h"
-#include "StandardModel.h"
-#include "SusyLesHouches.h"
-
-namespace Pythia8 {
-
-//==========================================================================
-
-// InBeam is a simple helper class for partons and their flux in a beam.
-
-class InBeam {
-
-public:
-
- // Constructor.
- InBeam( int idIn = 0) : id(idIn), pdf(0.) {}
-
- // Values.
- int id;
- double pdf;
-
-};
-
-//==========================================================================
-
-// InPair is a simple helper class for colliding parton pairs and their flux.
-
-class InPair {
-
-public:
-
- // Constructor.
- InPair( int idAIn = 0, int idBIn = 0) : idA(idAIn), idB(idBIn),
- pdfA(0.), pdfB(0.), pdfSigma(0.) {}
-
- // Values.
- int idA, idB;
- double pdfA, pdfB, pdfSigma;
-
-};
-
-//==========================================================================
-
-// SigmaProcess is the base class for cross section calculations.
-
-class SigmaProcess {
-
-public:
-
- // Destructor.
- virtual ~SigmaProcess() {}
-
- // Perform simple initialization and store pointers.
- void init(Info* infoPtrIn, Settings* settingsPtrIn,
- ParticleData* particleDataPtrIn, Rndm* rndmPtrIn,
- BeamParticle* beamAPtrIn, BeamParticle* beamBPtrIn, Couplings* couplings,
- SigmaTotal* sigmaTotPtrIn = 0, SusyLesHouches* slhaPtr = 0);
-
- // Store or replace Les Houches pointer.
- void setLHAPtr( LHAup* lhaUpPtrIn) {lhaUpPtr = lhaUpPtrIn;}
-
- // Initialize process. Only used for some processes.
- virtual void initProc() {}
-
- // Set up allowed flux of incoming partons. Default is no flux.
- virtual bool initFlux();
-
- // Input and complement kinematics for resolved 2 -> 1 process.
- // Usage: set1Kin( x1in, x2in, sHin).
- virtual void set1Kin( double , double , double ) {}
-
- // Input and complement kinematics for resolved 2 -> 2 process.
- // Usage: set2Kin( x1in, x2in, sHin, tHin, m3in, m4in, runBW3in, runBW4in).
- virtual void set2Kin( double , double , double , double , double ,
- double, double, double ) {}
-
- // Ditto, but for Multiparton Interactions applications, so different input.
- // Usage: set2KinMPI( x1in, x2in, sHin, tHin, uHin,
- // alpSin, alpEMin, needMasses, m3in, m4in)
- virtual void set2KinMPI( double , double , double , double ,
- double , double , double , bool , double , double ) {}
-
- // Input and complement kinematics for resolved 2 -> 3 process.
- // Usage: set3Kin( x1in, x2in, sHin, p3prel, p4prel, p5prel,
- // m3in, m4in, m5in, runBW3in, runBW4in, runBW5in);
- virtual void set3Kin( double , double , double , Vec4 , Vec4 , Vec4 ,
- double , double , double , double , double , double ) {}
-
- // Calculate flavour-independent parts of cross section.
- virtual void sigmaKin() {}
-
- // Evaluate sigma for unresolved, sigmaHat(sHat) for 2 -> 1 processes,
- // d(sigmaHat)/d(tHat) for (resolved) 2 -> 2 processes, and |M|^2 for
- // 2 -> 3 processes. Answer in "native" units, either mb or GeV^-2.
- virtual double sigmaHat() {return 0.;}
-
- // Wrapper to sigmaHat, to (a) store current incoming flavours and
- // (b) convert from GeV^-2 to mb where required.
- // For 2 -> 1/2 also (c) convert from from |M|^2 to d(sigmaHat)/d(tHat).
- virtual double sigmaHatWrap(int id1in = 0, int id2in = 0) {
- id1 = id1in; id2 = id2in;
- return ( convert2mb() ? CONVERT2MB * sigmaHat() : sigmaHat() ); }
-
- // Convolute above with parton flux and K factor. Sum over open channels.
- virtual double sigmaPDF();
-
- // Select incoming parton channel and extract parton densities (resolved).
- void pickInState(int id1in = 0, int id2in = 0);
-
- // Select flavour, colour and anticolour.
- virtual void setIdColAcol() {}
-
- // Perform kinematics for a Multiparton Interaction, in its rest frame.
- virtual bool final2KinMPI( int = 0, int = 0, Vec4 = 0., Vec4 = 0.,
- double = 0., double = 0.) {return true;}
-
- // Evaluate weight for simultaneous flavours (only gamma*/Z0 gamma*/Z0).
- // Usage: weightDecayFlav( process).
- virtual double weightDecayFlav( Event&) {return 1.;}
-
- // Evaluate weight for decay angular configuration.
- // Usage: weightDecay( process, iResBeg, iResEnd), where
- // iResBeg <= i < iResEnd is range of sister partons to test decays of.
- virtual double weightDecay( Event&, int, int) {return 1.;}
-
- // Set scale, when that is missing for an external LHA process.
- virtual void setScale() {}
-
- // Process name and code, and the number of final-state particles.
- virtual string name() const {return "unnamed process";}
- virtual int code() const {return 0;}
- virtual int nFinal() const {return 2;}
-
- // Need to know which incoming partons to set up interaction for.
- virtual string inFlux() const {return "unknown";}
-
- // Need to know whether to convert cross section answer from GeV^-2 to mb.
- virtual bool convert2mb() const {return true;}
-
- // For 2 -> 2 process optional conversion from |M|^2 to d(sigmaHat)/d(tHat).
- virtual bool convertM2() const {return false;}
-
- // Special treatment needed for Les Houches processes.
- virtual bool isLHA() const {return false;}
-
- // Special treatment needed for elastic and diffractive processes.
- virtual bool isMinBias() const {return false;}
- virtual bool isResolved() const {return true;}
- virtual bool isDiffA() const {return false;}
- virtual bool isDiffB() const {return false;}
- virtual bool isDiffC() const {return false;}
-
- // Special treatment needed for SUSY processes.
- virtual bool isSUSY() const {return false;}
-
- // Special treatment needed if negative cross sections allowed.
- virtual bool allowNegativeSigma() const {return false;}
-
- // Flavours in 2 -> 2/3 processes where masses needed from beginning.
- // (For a light quark masses will be used in the final kinematics,
- // but not at the matrix-element level. For a gluon no masses at all.)
- virtual int id3Mass() const {return 0;}
- virtual int id4Mass() const {return 0;}
- virtual int id5Mass() const {return 0;}
-
- // Special treatment needed if process contains an s-channel resonance.
- virtual int resonanceA() const {return 0;}
- virtual int resonanceB() const {return 0;}
-
- // 2 -> 2 and 2 -> 3 processes only through s-channel exchange.
- virtual bool isSChannel() const {return false;}
-
- // NOAM: Insert an intermediate resonance in 2 -> 1 -> 2 (or 3) listings.
- virtual int idSChannel() const {return 0;}
-
- // QCD 2 -> 3 processes need special phase space selection machinery.
- virtual bool isQCD3body() const {return false;}
-
- // Special treatment in 2 -> 3 with two massive propagators.
- virtual int idTchan1() const {return 0;}
- virtual int idTchan2() const {return 0;}
- virtual double tChanFracPow1() const {return 0.3;}
- virtual double tChanFracPow2() const {return 0.3;}
- virtual bool useMirrorWeight() const {return false;}
-
- // Special process-specific gamma*/Z0 choice if >=0 (e.g. f fbar -> H0 Z0).
- virtual int gmZmode() const {return -1;}
-
- // Tell whether tHat and uHat are swapped (= same as swap 3 and 4).
- bool swappedTU() const {return swapTU;}
-
- // Give back particle properties: flavours, colours, masses, or all.
- int id(int i) const {return idSave[i];}
- int col(int i) const {return colSave[i];}
- int acol(int i) const {return acolSave[i];}
- double m(int i) const {return mSave[i];}
- Particle getParton(int i) const {return parton[i];}
-
- // Give back couplings and parton densities. Not all known for minbias.
- double Q2Ren() const {return Q2RenSave;}
- double alphaEMRen() const {return alpEM;}
- double alphaSRen() const {return alpS;}
- double Q2Fac() const {return Q2FacSave;}
- double pdf1() const {return pdf1Save;}
- double pdf2() const {return pdf2Save;}
-
- // Give back angles; relevant only for multipe-interactions processes.
- double thetaMPI() const {return atan2( sinTheta, cosTheta);}
- double phiMPI() const {return phi;}
- double sHBetaMPI() const {return sHBeta;}
- double pT2MPI() const {return pT2Mass;}
- double pTMPIFin() const {return pTFin;}
-
- // Save and load kinematics for trial interactions
- void saveKin() {
- for (int i = 0; i < 6; i++) { partonT[i] = parton[i];
- mSaveT[i] = mSave[i]; }
- pTFinT = pTFin; phiT = phi; cosThetaT = cosTheta; sinThetaT = sinTheta; }
- void loadKin() {
- for (int i = 0; i < 6; i++) { parton[i] = partonT[i];
- mSave[i] = mSaveT[i]; }
- pTFin = pTFinT; cosTheta = cosThetaT; sinTheta = sinThetaT; phi = phiT;
- }
- void swapKin() {
- for (int i = 0; i < 6; i++) { swap(parton[i], partonT[i]);
- swap(mSave[i], mSaveT[i]); }
- swap(pTFin, pTFinT); swap(cosTheta, cosThetaT);
- swap(sinTheta, sinThetaT); swap(phi, phiT); }
-
-protected:
-
- // Constructor.
- SigmaProcess() : infoPtr(0), settingsPtr(0), particleDataPtr(0),
- rndmPtr(0), beamAPtr(0), beamBPtr(0), couplingsPtr(0), sigmaTotPtr(0),
- slhaPtr(0), lhaUpPtr(0) {for (int i = 0; i < 6; ++i) mSave[i] = 0.;}
-
- // Constants: could only be changed in the code itself.
- static const double CONVERT2MB, MASSMARGIN, COMPRELERR;
- static const int NCOMPSTEP;
-
- // Pointer to various information on the generation.
- Info* infoPtr;
-
- // Pointer to the settings database.
- Settings* settingsPtr;
-
- // Pointer to the particle data table.
- ParticleData* particleDataPtr;
-
- // Pointer to the random number generator.
- Rndm* rndmPtr;
-
- // Pointers to incoming beams.
- BeamParticle* beamAPtr;
- BeamParticle* beamBPtr;
-
- // Pointer to Standard Model couplings, including alphaS and alphaEM.
- Couplings* couplingsPtr;
-
- // Pointer to the total/elastic/diffractive cross section object.
- SigmaTotal* sigmaTotPtr;
-
- // Pointer to the SLHA object.
- SusyLesHouches* slhaPtr;
-
- // Pointer to LHAup for generating external events.
- LHAup* lhaUpPtr;
-
- // Initialization data, normally only set once.
- int nQuarkIn, renormScale1, renormScale2, renormScale3, renormScale3VV,
- factorScale1, factorScale2, factorScale3, factorScale3VV;
- double Kfactor, mcME, mbME, mmuME, mtauME, renormMultFac, renormFixScale,
- factorMultFac, factorFixScale;
-
- // CP violation parameters for Higgs sector, normally only set once.
- int higgsH1parity, higgsH2parity, higgsA3parity;
- double higgsH1eta, higgsH2eta, higgsA3eta;
-
- // Information on incoming beams.
- int idA, idB;
- double mA, mB;
- bool isLeptonA, isLeptonB, hasLeptonBeams;
-
- // Partons in beams, with PDF's.
- vector<InBeam> inBeamA;
- vector<InBeam> inBeamB;
- void addBeamA(int idIn) {inBeamA.push_back(InBeam(idIn));}
- void addBeamB(int idIn) {inBeamB.push_back(InBeam(idIn));}
- int sizeBeamA() const {return inBeamA.size();}
- int sizeBeamB() const {return inBeamB.size();}
-
- // Allowed colliding parton pairs, with pdf's.
- vector<InPair> inPair;
- void addPair(int idAIn, int idBIn) {
- inPair.push_back(InPair(idAIn, idBIn));}
- int sizePair() const {return inPair.size();}
-
- // Store common subprocess kinematics quantities.
- double mH, sH, sH2;
-
- // Store Q2 renormalization and factorization scales, and related values.
- double Q2RenSave, alpEM, alpS, Q2FacSave, x1Save, x2Save, pdf1Save,
- pdf2Save, sigmaSumSave;
-
- // Store flavour, colour, anticolour, mass, angles and the whole particle.
- int id1, id2, id3, id4, id5;
- int idSave[6], colSave[6], acolSave[6];
- double mSave[6], cosTheta, sinTheta, phi, sHMass, sHBeta, pT2Mass, pTFin;
- Particle parton[6];
-
- // Minimal set of saved kinematics for trial interactions when
- // using the x-dependent matter profile of multiparton interactions.
- Particle partonT[6];
- double mSaveT[6], pTFinT, cosThetaT, sinThetaT, phiT;
-
- // Calculate and store all modified masses and four-vectors
- // intended for matrix elements. Return false if failed.
- virtual bool setupForME() {return true;}
- bool setupForMEin();
- double mME[5];
- Vec4 pME[5];
-
- // Store whether tHat and uHat are swapped (= same as swap 3 and 4).
- bool swapTU;
-
- // Set flavour, colour and anticolour.
- void setId( int id1in = 0, int id2in = 0, int id3in = 0, int id4in = 0,
- int id5in = 0) {idSave[1] = id1in; idSave[2] = id2in; idSave[3] = id3in;
- idSave[4] = id4in; idSave[5] = id5in;}
- void setColAcol( int col1 = 0, int acol1 = 0,
- int col2 = 0, int acol2 = 0, int col3 = 0, int acol3 = 0,
- int col4 = 0, int acol4 = 0, int col5 = 0, int acol5 = 0) {
- colSave[1] = col1; acolSave[1] = acol1; colSave[2] = col2;
- acolSave[2] = acol2; colSave[3] = col3; acolSave[3] = acol3;
- colSave[4] = col4; acolSave[4] = acol4; colSave[5] = col5;
- acolSave[5] = acol5; }
- void swapColAcol() { swap(colSave[1], acolSave[1]);
- swap(colSave[2], acolSave[2]); swap(colSave[3], acolSave[3]);
- swap(colSave[4], acolSave[4]); swap(colSave[5], acolSave[5]);}
- void swapCol1234() { swap(colSave[1], colSave[2]);
- swap(colSave[3], colSave[4]); swap(acolSave[1], acolSave[2]);
- swap(acolSave[3], acolSave[4]);}
- void swapCol12() { swap(colSave[1], colSave[2]);
- swap(acolSave[1], acolSave[2]);}
- void swapCol34() { swap(colSave[3], colSave[4]);
- swap(acolSave[3], acolSave[4]);}
-
- // Common code for top and Higgs secondary decay angular weights.
- double weightTopDecay( Event& process, int iResBeg, int iResEnd);
- double weightHiggsDecay( Event& process, int iResBeg, int iResEnd);
-
-};
-
-//==========================================================================
-
-// Sigma0Process is the base class for unresolved and minimum-bias processes.
-// It is derived from SigmaProcess.
-
-class Sigma0Process : public SigmaProcess {
-
-public:
-
- // Destructor.
- virtual ~Sigma0Process() {}
-
- // Number of final-state particles.
- virtual int nFinal() const {return 2;};
-
- // No partonic flux to be set up.
- virtual bool initFlux() {return true;}
-
- // Evaluate sigma for unresolved processes.
- virtual double sigmaHat() {return 0.;}
-
- // Since no PDF's there is no difference from above.
- virtual double sigmaPDF() {return sigmaHat();}
-
- // Answer for these processes already in mb, so do not convert.
- virtual bool convert2mb() const {return false;}
-
-protected:
-
- // Constructor.
- Sigma0Process() {}
-
-};
-
-//==========================================================================
-
-// Sigma1Process is the base class for 2 -> 1 processes.
-// It is derived from SigmaProcess.
-
-class Sigma1Process : public SigmaProcess {
-
-public:
-
- // Destructor.
- virtual ~Sigma1Process() {}
-
- // Number of final-state particles.
- virtual int nFinal() const {return 1;};
-
- // Input and complement kinematics for resolved 2 -> 1 process.
- virtual void set1Kin( double x1in, double x2in, double sHin) {
- store1Kin( x1in, x2in, sHin); sigmaKin();}
-
- // Evaluate sigmaHat(sHat) for resolved 2 -> 1 processes.
- virtual double sigmaHat() {return 0.;}
-
- // Wrapper to sigmaHat, to (a) store current incoming flavours,
- // (b) convert from GeV^-2 to mb where required, and
- // (c) convert from |M|^2 to d(sigmaHat)/d(tHat) where required.
- virtual double sigmaHatWrap(int id1in = 0, int id2in = 0);
-
-protected:
-
- // Constructor.
- Sigma1Process() {}
-
- // Store kinematics and set scales for resolved 2 -> 1 process.
- virtual void store1Kin( double x1in, double x2in, double sHin);
-
- // Calculate modified masses and four-vectors for matrix elements.
- virtual bool setupForME();
-
-};
-
-//==========================================================================
-
-// Sigma2Process is the base class for 2 -> 2 processes.
-// It is derived from SigmaProcess.
-
-class Sigma2Process : public SigmaProcess {
-
-public:
-
- // Destructor.
- virtual ~Sigma2Process() {}
-
- // Number of final-state particles.
- virtual int nFinal() const {return 2;};
-
- // Input and complement kinematics for resolved 2 -> 2 process.
- virtual void set2Kin( double x1in, double x2in, double sHin,
- double tHin, double m3in, double m4in, double runBW3in,
- double runBW4in) { store2Kin( x1in, x2in, sHin, tHin, m3in, m4in,
- runBW3in, runBW4in); sigmaKin();}
-
- // Ditto, but for Multiparton Interactions applications, so different input.
- virtual void set2KinMPI( double x1in, double x2in, double sHin,
- double tHin, double uHin, double alpSin, double alpEMin,
- bool needMasses, double m3in, double m4in) {
- store2KinMPI( x1in, x2in, sHin, tHin, uHin, alpSin, alpEMin,
- needMasses, m3in, m4in); sigmaKin();}
-
- // Evaluate d(sigmaHat)/d(tHat) for resolved 2 -> 2 processes.
- virtual double sigmaHat() {return 0.;}
-
- // Wrapper to sigmaHat, to (a) store current incoming flavours,
- // (b) convert from GeV^-2 to mb where required, and
- // (c) convert from |M|^2 to d(sigmaHat)/d(tHat) where required.
- virtual double sigmaHatWrap(int id1in = 0, int id2in = 0) {
- id1 = id1in; id2 = id2in; double sigmaTmp = sigmaHat();
- if (convertM2()) sigmaTmp /= 16. * M_PI * sH2;
- if (convert2mb()) sigmaTmp *= CONVERT2MB; return sigmaTmp;}
-
- // Perform kinematics for a Multiparton Interaction, in its rest frame.
- virtual bool final2KinMPI( int i1Res = 0, int i2Res = 0, Vec4 p1Res = 0.,
- Vec4 p2Res = 0., double m1Res = 0., double m2Res = 0.);
-
-protected:
-
- // Constructor.
- Sigma2Process() : tH(0.), uH(0.), tH2(0.), uH2(0.), m3(0.), s3(0.),
- m4(0.), s4(0.), pT2(0.), runBW3(0.), runBW4(0.) {}
-
- // Store kinematics and set scales for resolved 2 -> 2 process.
- virtual void store2Kin( double x1in, double x2in, double sHin,
- double tHin, double m3in, double m4in, double runBW3in,
- double runBW4in);
- virtual void store2KinMPI( double x1in, double x2in, double sHin,
- double tHin, double uHin, double alpSin, double alpEMin,
- bool needMasses, double m3in, double m4in);
-
- // Calculate modified masses and four-vectors for matrix elements.
- virtual bool setupForME();
-
- // Store subprocess kinematics quantities.
- double tH, uH, tH2, uH2, m3, s3, m4, s4, pT2, runBW3, runBW4;
-
-};
-
-//==========================================================================
-
-// Sigma3Process is the base class for 2 -> 3 processes.
-// It is derived from SigmaProcess.
-
-class Sigma3Process : public SigmaProcess {
-
-public:
-
- // Destructor.
- virtual ~Sigma3Process() {}
-
- // Number of final-state particles.
- virtual int nFinal() const {return 3;};
-
- // Input and complement kinematics for resolved 2 -> 3 process.
- virtual void set3Kin( double x1in, double x2in, double sHin,
- Vec4 p3cmIn, Vec4 p4cmIn, Vec4 p5cmIn, double m3in, double m4in,
- double m5in, double runBW3in, double runBW4in, double runBW5in) {
- store3Kin( x1in, x2in, sHin, p3cmIn, p4cmIn, p5cmIn, m3in, m4in, m5in,
- runBW3in, runBW4in, runBW5in); sigmaKin();}
-
- // Evaluate d(sigmaHat)/d(tHat) for resolved 2 -> 3 processes.
- virtual double sigmaHat() {return 0.;}
-
-protected:
-
- // Constructor.
- Sigma3Process() {}
-
- // Store kinematics and set scales for resolved 2 -> 3 process.
- virtual void store3Kin( double x1in, double x2in, double sHin,
- Vec4 p3cmIn, Vec4 p4cmIn, Vec4 p5cmIn, double m3in, double m4in,
- double m5in, double runBW3in, double runBW4in, double runBW5in);
-
- // Calculate modified masses and four-vectors for matrix elements.
- virtual bool setupForME();
-
- // Store subprocess kinematics quantities.
- double m3, s3, m4, s4, m5, s5, runBW3, runBW4, runBW5;
- Vec4 p3cm, p4cm, p5cm;
-
-};
-
-//==========================================================================
-
-// SigmaLHAProcess is a wrapper class for Les Houches Accord external input.
-// It is derived from SigmaProcess.
-
-class SigmaLHAProcess : public SigmaProcess {
-
-public:
-
- // Constructor.
- SigmaLHAProcess() {}
-
- // Destructor.
- virtual ~SigmaLHAProcess() {}
-
- // No partonic flux to be set up.
- virtual bool initFlux() {return true;}
-
- // Dummy function: action is put in PhaseSpaceLHA.
- virtual double sigmaPDF() {return 1.;}
-
- // Evaluate weight for decay angular configuration, where relevant.
- virtual double weightDecay( Event& process, int iResBeg, int iResEnd);
-
- // Set scale, when that is missing for an external LHA process.
- virtual void setScale();
-
- // Info on the subprocess.
- virtual string name() const {return "Les Houches User Process(es)";}
- virtual int code() const {return 9999;}
-
- // Number of final-state particles depends on current process choice.
- virtual int nFinal() const;
-
- // Answer for these processes not in GeV^-2, so do not do this conversion.
- virtual bool convert2mb() const {return false;}
-
- // Ensure special treatment of Les Houches processes.
- virtual bool isLHA() const {return true;}
-
- // Special treatment needed if negative cross sections allowed.
- virtual bool allowNegativeSigma() const {
- return (lhaUpPtr->strategy() < 0);}
-
-private:
-
-};
-
-//==========================================================================
-
-} // end namespace Pythia8
-
-#endif // Pythia8_SigmaProcess_H
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff