/usr/include/Pythia8/Pythia8/Event.h is in libpythia8-dev 8.1.86-1.2.
This file is owned by root:root, with mode 0o644.
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// Copyright (C) 2014 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 the Particle and Event classes.
// Particle: information on an instance of a particle.
// Junction: information on a junction between three colours.
// Event: list of particles in the current event.
#ifndef Pythia8_Event_H
#define Pythia8_Event_H
#include "Pythia8/Basics.h"
#include "Pythia8/ParticleData.h"
#include "Pythia8/PythiaStdlib.h"
namespace Pythia8 {
//==========================================================================
// Forward references to ParticleDataEntry and ResonanceWidths classes.
class ParticleDataEntry;
class ResonanceWidths;
class Event;
//==========================================================================
// Particle class.
// This class holds info on a particle in general.
class Particle {
public:
// Constructors.
Particle() : idSave(0), statusSave(0), mother1Save(0), mother2Save(0),
daughter1Save(0), daughter2Save(0), colSave(0), acolSave(0),
pSave(Vec4(0.,0.,0.,0.)), mSave(0.), scaleSave(0.), polSave(9.),
hasVertexSave(false), vProdSave(Vec4(0.,0.,0.,0.)), tauSave(0.),
pdePtr(0), evtPtr(0) { }
Particle(int idIn, int statusIn = 0, int mother1In = 0,
int mother2In = 0, int daughter1In = 0, int daughter2In = 0,
int colIn = 0, int acolIn = 0, double pxIn = 0., double pyIn = 0.,
double pzIn = 0., double eIn = 0., double mIn = 0.,
double scaleIn = 0., double polIn = 9.)
: idSave(idIn), statusSave(statusIn), mother1Save(mother1In),
mother2Save(mother2In), daughter1Save(daughter1In),
daughter2Save(daughter2In), colSave(colIn), acolSave(acolIn),
pSave(Vec4(pxIn, pyIn, pzIn, eIn)), mSave(mIn), scaleSave(scaleIn),
polSave(polIn), hasVertexSave(false), vProdSave(Vec4(0.,0.,0.,0.)),
tauSave(0.), pdePtr(0), evtPtr(0) { }
Particle(int idIn, int statusIn, int mother1In, int mother2In,
int daughter1In, int daughter2In, int colIn, int acolIn,
Vec4 pIn, double mIn = 0., double scaleIn = 0., double polIn = 9.)
: idSave(idIn), statusSave(statusIn), mother1Save(mother1In),
mother2Save(mother2In), daughter1Save(daughter1In),
daughter2Save(daughter2In), colSave(colIn), acolSave(acolIn),
pSave(pIn), mSave(mIn), scaleSave(scaleIn), polSave(polIn),
hasVertexSave(false), vProdSave(Vec4(0.,0.,0.,0.)), tauSave(0.),
pdePtr(0), evtPtr(0) { }
Particle(const Particle& pt) : idSave(pt.idSave),
statusSave(pt.statusSave), mother1Save(pt.mother1Save),
mother2Save(pt.mother2Save), daughter1Save(pt.daughter1Save),
daughter2Save(pt.daughter2Save), colSave(pt.colSave),
acolSave(pt.acolSave), pSave(pt.pSave), mSave(pt.mSave),
scaleSave(pt.scaleSave), polSave(pt.polSave),
hasVertexSave(pt.hasVertexSave), vProdSave(pt.vProdSave),
tauSave(pt.tauSave), pdePtr(pt.pdePtr), evtPtr(pt.evtPtr) { }
Particle& operator=(const Particle& pt) {if (this != &pt) {
idSave = pt.idSave; statusSave = pt.statusSave;
mother1Save = pt.mother1Save; mother2Save = pt.mother2Save;
daughter1Save = pt.daughter1Save; daughter2Save = pt.daughter2Save;
colSave = pt.colSave; acolSave = pt.acolSave; pSave = pt.pSave;
mSave = pt.mSave; scaleSave = pt.scaleSave; polSave = pt.polSave;
hasVertexSave = pt.hasVertexSave; vProdSave = pt.vProdSave;
tauSave = pt.tauSave; pdePtr = pt.pdePtr; evtPtr = pt.evtPtr; }
return *this; }
// Member functions to set the Event and ParticleDataEntry pointers.
void setEvtPtr(Event* evtPtrIn) { evtPtr = evtPtrIn; setPDEPtr();}
void setPDEPtr(ParticleDataEntry* pdePtrIn = 0);
// Member functions for input.
void id(int idIn) {idSave = idIn; setPDEPtr();}
void status(int statusIn) {statusSave = statusIn;}
void statusPos() {statusSave = abs(statusSave);}
void statusNeg() {statusSave = -abs(statusSave);}
void statusCode(int statusIn) {statusSave =
(statusSave > 0) ? abs(statusIn) : -abs(statusIn);}
void mother1(int mother1In) {mother1Save = mother1In;}
void mother2(int mother2In) {mother2Save = mother2In;}
void mothers(int mother1In = 0, int mother2In = 0)
{mother1Save = mother1In; mother2Save = mother2In;}
void daughter1(int daughter1In) {daughter1Save = daughter1In;}
void daughter2(int daughter2In) {daughter2Save = daughter2In;}
void daughters(int daughter1In = 0, int daughter2In = 0)
{daughter1Save = daughter1In; daughter2Save = daughter2In;}
void col(int colIn) {colSave = colIn;}
void acol(int acolIn) {acolSave = acolIn;}
void cols(int colIn = 0,int acolIn = 0) {colSave = colIn;
acolSave = acolIn;}
void p(Vec4 pIn) {pSave = pIn;}
void p(double pxIn, double pyIn, double pzIn, double eIn)
{pSave.p(pxIn, pyIn, pzIn, eIn);}
void px(double pxIn) {pSave.px(pxIn);}
void py(double pyIn) {pSave.py(pyIn);}
void pz(double pzIn) {pSave.pz(pzIn);}
void e(double eIn) {pSave.e(eIn);}
void m(double mIn) {mSave = mIn;}
void scale(double scaleIn) {scaleSave = scaleIn;}
void pol(double polIn) {polSave = polIn;}
void vProd(Vec4 vProdIn) {vProdSave = vProdIn; hasVertexSave = true;}
void vProd(double xProdIn, double yProdIn, double zProdIn, double tProdIn)
{vProdSave.p(xProdIn, yProdIn, zProdIn, tProdIn); hasVertexSave = true;}
void xProd(double xProdIn) {vProdSave.px(xProdIn); hasVertexSave = true;}
void yProd(double yProdIn) {vProdSave.py(yProdIn); hasVertexSave = true;}
void zProd(double zProdIn) {vProdSave.pz(zProdIn); hasVertexSave = true;}
void tProd(double tProdIn) {vProdSave.e(tProdIn); hasVertexSave = true;}
void tau(double tauIn) {tauSave = tauIn;}
// Member functions for output.
int id() const {return idSave;}
int status() const {return statusSave;}
int mother1() const {return mother1Save;}
int mother2() const {return mother2Save;}
int daughter1() const {return daughter1Save;}
int daughter2() const {return daughter2Save;}
int col() const {return colSave;}
int acol() const {return acolSave;}
Vec4 p() const {return pSave;}
double px() const {return pSave.px();}
double py() const {return pSave.py();}
double pz() const {return pSave.pz();}
double e() const {return pSave.e();}
double m() const {return mSave;}
double scale() const {return scaleSave;}
double pol() const {return polSave;}
bool hasVertex() const {return hasVertexSave;}
Vec4 vProd() const {return vProdSave;}
double xProd() const {return vProdSave.px();}
double yProd() const {return vProdSave.py();}
double zProd() const {return vProdSave.pz();}
double tProd() const {return vProdSave.e();}
double tau() const {return tauSave;}
// Member functions for output; derived int and bool quantities.
int idAbs() const {return abs(idSave);}
int statusAbs() const {return abs(statusSave);}
bool isFinal() const {return (statusSave > 0);}
bool isRescatteredIncoming() const {return
(statusSave == -34 || statusSave == -45 ||
statusSave == -46 || statusSave == -54);}
// Member functions for output; derived double quantities.
double m2() const {return (mSave >= 0.) ? mSave*mSave
: -mSave*mSave;}
double mCalc() const {return pSave.mCalc();}
double m2Calc() const {return pSave.m2Calc();}
double eCalc() const {return sqrt(abs(m2() + pSave.pAbs2()));}
double pT() const {return pSave.pT();}
double pT2() const {return pSave.pT2();}
double mT() const {double temp = m2() + pSave.pT2();
return (temp >= 0.) ? sqrt(temp) : -sqrt(-temp);}
double mT2() const {return m2() + pSave.pT2();}
double pAbs() const {return pSave.pAbs();}
double pAbs2() const {return pSave.pAbs2();}
double eT() const {return pSave.eT();}
double eT2() const {return pSave.eT2();}
double theta() const {return pSave.theta();}
double phi() const {return pSave.phi();}
double thetaXZ() const {return pSave.thetaXZ();}
double pPos() const {return pSave.pPos();}
double pNeg() const {return pSave.pNeg();}
double y() const;
double eta() const;
Vec4 vDec() const {return (tauSave > 0. && mSave > 0.)
? vProdSave + tauSave * pSave / mSave : vProdSave;}
double xDec() const {return (tauSave > 0. && mSave > 0.)
? vProdSave.px() + tauSave * pSave.px() / mSave : vProdSave.px();}
double yDec() const {return (tauSave > 0. && mSave > 0.)
? vProdSave.py() + tauSave * pSave.py() / mSave : vProdSave.py();}
double zDec() const {return (tauSave > 0. && mSave > 0.)
? vProdSave.pz() + tauSave * pSave.pz() / mSave : vProdSave.pz();}
double tDec() const {return (tauSave > 0. && mSave > 0.)
? vProdSave.e() + tauSave * pSave.e() / mSave : vProdSave.e();}
// Methods that can refer back to the event the particle belongs to.
int index() const;
int statusHepMC() const;
int iTopCopy() const;
int iBotCopy() const;
int iTopCopyId() const;
int iBotCopyId() const;
vector<int> motherList() const;
vector<int> daughterList() const;
vector<int> sisterList(bool traceTopBot = false) const;
bool isAncestor(int iAncestor) const;
bool undoDecay();
// Further output, based on a pointer to a ParticleDataEntry object.
string name() const {
return (pdePtr != 0) ? pdePtr->name(idSave) : " ";}
string nameWithStatus(int maxLen = 20) const;
int spinType() const {
return (pdePtr != 0) ? pdePtr->spinType() : 0;}
int chargeType() const {
return (pdePtr != 0) ? pdePtr->chargeType(idSave) : 0;}
double charge() const {
return (pdePtr != 0) ? pdePtr->charge(idSave) : 0;}
bool isCharged() const {
return (pdePtr != 0) ? (pdePtr->chargeType(idSave) != 0) : false;}
bool isNeutral() const {
return (pdePtr != 0) ? (pdePtr->chargeType(idSave) == 0) : false;}
int colType() const {
return (pdePtr != 0) ? pdePtr->colType(idSave) : 0;}
double m0() const {
return (pdePtr != 0) ? pdePtr->m0() : 0.;}
double mWidth() const {
return (pdePtr != 0) ? pdePtr->mWidth() : 0.;}
double mMin() const {
return (pdePtr != 0) ? pdePtr->mMin() : 0.;}
double mMax() const {
return (pdePtr != 0) ? pdePtr->mMax() : 0.;}
double mSel() const {
return (pdePtr != 0) ? pdePtr->mSel() : 0.;}
double constituentMass() const {
return (pdePtr != 0) ? pdePtr->constituentMass() : 0.;}
double tau0() const {
return (pdePtr != 0) ? pdePtr->tau0() : 0.;}
bool mayDecay() const {
return (pdePtr != 0) ? pdePtr->mayDecay() : false;}
bool canDecay() const {
return (pdePtr != 0) ? pdePtr->canDecay() : false;}
bool doExternalDecay() const {
return (pdePtr != 0) ? pdePtr->doExternalDecay() : false;}
bool isResonance() const {
return (pdePtr != 0) ? pdePtr->isResonance() : false;}
bool isVisible() const {
return (pdePtr != 0) ? pdePtr->isVisible() : false;}
bool isLepton() const {
return (pdePtr != 0) ? pdePtr->isLepton() : false;}
bool isQuark() const {
return (pdePtr != 0) ? pdePtr->isQuark() : false;}
bool isGluon() const {
return (pdePtr != 0) ? pdePtr->isGluon() : false;}
bool isDiquark() const {
return (pdePtr != 0) ? pdePtr->isDiquark() : false;}
bool isParton() const {
return (pdePtr != 0) ? pdePtr->isParton() : false;}
bool isHadron() const {
return (pdePtr != 0) ? pdePtr->isHadron() : false;}
ParticleDataEntry& particleDataEntry() const {return *pdePtr;}
// Member functions that perform operations.
void rescale3(double fac) {pSave.rescale3(fac);}
void rescale4(double fac) {pSave.rescale4(fac);}
void rescale5(double fac) {pSave.rescale4(fac); mSave *= fac;}
void rot(double thetaIn, double phiIn) {pSave.rot(thetaIn, phiIn);
if (hasVertexSave) vProdSave.rot(thetaIn, phiIn);}
void bst(double betaX, double betaY, double betaZ) {
pSave.bst(betaX, betaY, betaZ);
if (hasVertexSave) vProdSave.bst(betaX, betaY, betaZ);}
void bst(double betaX, double betaY, double betaZ, double gamma) {
pSave.bst(betaX, betaY, betaZ, gamma);
if (hasVertexSave) vProdSave.bst(betaX, betaY, betaZ, gamma);}
void bst(const Vec4& pBst) {pSave.bst(pBst);
if (hasVertexSave) vProdSave.bst(pBst);}
void bst(const Vec4& pBst, double mBst) {pSave.bst(pBst, mBst);
if (hasVertexSave) vProdSave.bst(pBst, mBst);}
void bstback(const Vec4& pBst) {pSave.bstback(pBst);
if (hasVertexSave) vProdSave.bstback(pBst);}
void bstback(const Vec4& pBst, double mBst) {pSave.bstback(pBst, mBst);
if (hasVertexSave) vProdSave.bstback(pBst, mBst);}
void rotbst(const RotBstMatrix& M) {pSave.rotbst(M);
if (hasVertexSave) vProdSave.rotbst(M);}
void offsetHistory( int minMother, int addMother, int minDaughter,
int addDaughter);
void offsetCol( int addCol);
private:
// Constants: could only be changed in the code itself.
static const double TINY;
// Properties of the current particle.
int idSave, statusSave, mother1Save, mother2Save, daughter1Save,
daughter2Save, colSave, acolSave;
Vec4 pSave;
double mSave, scaleSave, polSave;
bool hasVertexSave;
Vec4 vProdSave;
double tauSave;
// Pointer to properties of the particle species.
// Should no be saved in a persistent copy of the event record.
// The //! below is ROOT notation that this member should not be saved.
// Event::restorePtrs() can be called to restore the missing information.
ParticleDataEntry* pdePtr; //!
// Pointer to the whole event record to which the particle belongs (if any).
// As above it should not be saved.
Event* evtPtr; //!
};
// Invariant mass of a pair and its square.
// (Not part of class proper, but tightly linked.)
double m(const Particle&, const Particle&);
double m2(const Particle&, const Particle&);
//==========================================================================
// The junction class stores what kind of junction it is, the colour indices
// of the legs at the junction and as far out as legs have been traced,
// and the status codes assigned for fragmentation of each leg.
class Junction {
public:
// Constructors.
Junction() : remainsSave(true), kindSave(0) {
for (int j = 0; j < 3; ++j) {
colSave[j] = 0; endColSave[j] = 0; statusSave[j] = 0; } }
Junction( int kindIn, int col0In, int col1In, int col2In)
: remainsSave(true), kindSave(kindIn) {colSave[0] = col0In;
colSave[1] = col1In; colSave[2] = col2In;
for (int j = 0; j < 3; ++j) {
endColSave[j] = colSave[j]; statusSave[j] = 0; } }
Junction(const Junction& ju) : remainsSave(ju.remainsSave),
kindSave(ju.kindSave) { for (int j = 0; j < 3; ++j) {
colSave[j] = ju.colSave[j]; endColSave[j] = ju.endColSave[j];
statusSave[j] = ju.statusSave[j]; } }
Junction& operator=(const Junction& ju) {if (this != &ju) {
remainsSave = ju.remainsSave; kindSave = ju.kindSave;
for (int j = 0; j < 3; ++j) { colSave[j] = ju.colSave[j];
endColSave[j] = ju.endColSave[j]; statusSave[j] = ju.statusSave[j]; } }
return *this; }
// Set values.
void remains(bool remainsIn) {remainsSave = remainsIn;}
void col(int j, int colIn) {colSave[j] = colIn; endColSave[j] = colIn;}
void cols(int j, int colIn, int endColIn) {colSave[j] = colIn;
endColSave[j] = endColIn;}
void endCol(int j, int endColIn) {endColSave[j] = endColIn;}
void status(int j, int statusIn) {statusSave[j] = statusIn;}
// Read out value.
bool remains() const {return remainsSave;}
int kind() const {return kindSave;}
int col(int j) const {return colSave[j];}
int endCol(int j) const {return endColSave[j];}
int status(int j) const {return statusSave[j];}
private:
// Kind, positions of the three ends and their status codes.
bool remainsSave;
int kindSave, colSave[3], endColSave[3], statusSave[3];
};
//==========================================================================
// The Event class holds all info on the generated event.
class Event {
public:
// Constructors.
Event(int capacity = 100) : startColTag(100), maxColTag(100),
savedSize(0), savedJunctionSize(0), scaleSave(0.), scaleSecondSave(0.),
headerList("----------------------------------------"),
particleDataPtr(0) { entry.reserve(capacity); }
Event& operator=(const Event& oldEvent);
Event(const Event& oldEvent) {*this = oldEvent;}
// Initialize header for event listing, particle data table, and colour.
void init( string headerIn = "", ParticleData* particleDataPtrIn = 0,
int startColTagIn = 100) {
headerList.replace(0, headerIn.length() + 2, headerIn + " ");
particleDataPtr = particleDataPtrIn; startColTag = startColTagIn;}
// Clear event record.
void clear() {entry.resize(0); maxColTag = startColTag; scaleSave = 0.;
scaleSecondSave = 0.; clearJunctions();}
// Clear event record, and set first particle empty.
void reset() {clear(); append(90, -11, 0, 0, 0., 0., 0., 0., 0.);}
// Overload index operator to access element of event record.
Particle& operator[](int i) {return entry[i];}
const Particle& operator[](int i) const {return entry[i];}
// Implement standard references to elements in the particle array.
Particle& front() {return entry.front();}
Particle& at(int i) {return entry.at(i);}
Particle& back() {return entry.back();}
// Event record size.
int size() const {return entry.size();}
// Put a new particle at the end of the event record; return index.
int append(Particle entryIn) {
entry.push_back(entryIn); setEvtPtr();
if (entryIn.col() > maxColTag) maxColTag = entryIn.col();
if (entryIn.acol() > maxColTag) maxColTag = entryIn.acol();
return entry.size() - 1;
}
int append(int id, int status, int mother1, int mother2, int daughter1,
int daughter2, int col, int acol, double px, double py, double pz,
double e, double m = 0., double scaleIn = 0., double polIn = 9.) {
entry.push_back( Particle(id, status, mother1, mother2, daughter1,
daughter2, col, acol, px, py, pz, e, m, scaleIn, polIn) ); setEvtPtr();
if (col > maxColTag) maxColTag = col;
if (acol > maxColTag) maxColTag = acol;
return entry.size() - 1;
}
int append(int id, int status, int mother1, int mother2, int daughter1,
int daughter2, int col, int acol, Vec4 p, double m = 0.,
double scaleIn = 0., double polIn = 9.) {
entry.push_back( Particle(id, status, mother1, mother2, daughter1,
daughter2, col, acol, p, m, scaleIn, polIn) ); setEvtPtr();
if (col > maxColTag) maxColTag = col;
if (acol > maxColTag) maxColTag = acol;
return entry.size() - 1;
}
// Brief versions of append: no mothers and no daughters.
int append(int id, int status, int col, int acol, double px, double py,
double pz, double e, double m = 0., double scaleIn = 0.,
double polIn = 9.) { entry.push_back( Particle(id, status, 0, 0, 0, 0,
col, acol, px, py, pz, e, m, scaleIn, polIn) ); setEvtPtr();
if (col > maxColTag) maxColTag = col;
if (acol > maxColTag) maxColTag = acol;
return entry.size() - 1;
}
int append(int id, int status, int col, int acol, Vec4 p, double m = 0.,
double scaleIn = 0., double polIn = 9.) {entry.push_back( Particle(id,
status, 0, 0, 0, 0, col, acol, p, m, scaleIn, polIn) ); setEvtPtr();
if (col > maxColTag) maxColTag = col;
if (acol > maxColTag) maxColTag = acol;
return entry.size() - 1;
}
// Set pointer to the event for a particle, by default latest one.
void setEvtPtr(int iSet = -1) {if (iSet < 0) iSet = entry.size() - 1;
entry[iSet].setEvtPtr( this);}
// Add a copy of an existing particle at the end of the event record.
int copy(int iCopy, int newStatus = 0);
// List the particles in an event.
void list() const;
void list(ostream& os) const;
void list(bool showScaleAndVertex, bool showMothersAndDaughters = false)
const;
void list(bool showScaleAndVertex, bool showMothersAndDaughters,
ostream& os) const;
// Remove last n entries.
void popBack(int nRemove = 1) { if (nRemove ==1) entry.pop_back();
else {int newSize = max( 0, size() - nRemove);
entry.resize(newSize);} }
// Remove entries from iFirst to iLast, including endpoints.
void remove(int iFirst, int iLast) {
if (iFirst < 0 || iLast >= int(entry.size()) || iLast < iFirst) return;
entry.erase( entry.begin() + iFirst, entry.begin() + iLast + 1);
}
// Undo the decay of a single particle (where daughters well-defined).
bool undoDecay(int i);
// Restore all ParticleDataEntry* pointers in the Particle vector.
// Useful when a persistent copy of the event record is read back in.
void restorePtrs() { for (int i = 0; i < size(); ++i) setEvtPtr(i); }
// Save or restore the size of the event record (throwing at the end).
void saveSize() {savedSize = entry.size();}
void restoreSize() {entry.resize(savedSize);}
int savedSizeValue() {return savedSize;}
// Initialize and access colour tag information.
void initColTag(int colTag = 0) {maxColTag = max( colTag,startColTag);}
int lastColTag() const {return maxColTag;}
int nextColTag() {return ++maxColTag;}
// Access scale for which event as a whole is defined.
void scale( double scaleIn) {scaleSave = scaleIn;}
double scale() const {return scaleSave;}
// Need a second scale if two hard interactions in event.
void scaleSecond( double scaleSecondIn) {scaleSecondSave = scaleSecondIn;}
double scaleSecond() const {return scaleSecondSave;}
// Find complete list of daughters and mothers.
vector<int> motherList(int i) const;
vector<int> daughterList(int i) const;
// Convert to HepMC status code conventions.
int statusHepMC(int i) const;
// Trace the first and last copy of one and the same particle.
int iTopCopy(int i) const;
int iBotCopy(int i) const;
// Trace the first and last copy of a particle, using flavour match.
int iTopCopyId(int i) const;
int iBotCopyId(int i) const;
// Find list of sisters, also tracking up and down identical copies.
vector<int> sisterList(int i) const;
vector<int> sisterListTopBot(int i, bool widenSearch = true) const;
// Check whether two particles have a direct mother-daughter relation.
bool isAncestor(int i, int iAncestor) const;
// Member functions for rotations and boosts of an event.
void rot(double theta, double phi)
{for (int i = 0; i < size(); ++i) entry[i].rot(theta, phi);}
void bst(double betaX, double betaY, double betaZ)
{for (int i = 0; i < size(); ++i) entry[i].bst(betaX, betaY, betaZ);}
void bst(double betaX, double betaY, double betaZ, double gamma)
{for (int i = 0; i < size(); ++i) entry[i].bst(betaX, betaY, betaZ,
gamma);}
void bst(const Vec4& vec)
{for (int i = 0; i < size(); ++i) entry[i].bst(vec);}
void rotbst(const RotBstMatrix& M)
{for (int i = 0; i < size(); ++i) entry[i].rotbst(M);}
// Clear the list of junctions.
void clearJunctions() {junction.resize(0);}
// Add a junction to the list, study it or extra input.
int appendJunction( int kind, int col0, int col1, int col2)
{ junction.push_back( Junction( kind, col0, col1, col2) );
return junction.size() - 1;}
int appendJunction(Junction junctionIn) {junction.push_back(junctionIn);
return junction.size() - 1;}
int sizeJunction() const {return junction.size();}
bool remainsJunction(int i) const {return junction[i].remains();}
void remainsJunction(int i, bool remainsIn) {junction[i].remains(remainsIn);}
int kindJunction(int i) const {return junction[i].kind();}
int colJunction( int i, int j) const {return junction[i].col(j);}
void colJunction( int i, int j, int colIn) {junction[i].col(j, colIn);}
int endColJunction( int i, int j) const {return junction[i].endCol(j);}
void endColJunction( int i, int j, int endColIn)
{junction[i].endCol(j, endColIn);}
int statusJunction( int i, int j) const {return junction[i].status(j);}
void statusJunction( int i, int j, int statusIn)
{junction[i].status(j, statusIn);}
Junction& getJunction(int i) {return junction[i];}
const Junction& getJunction(int i) const {return junction[i];}
void eraseJunction(int i);
// Save or restore the size of the junction list (throwing at the end).
void saveJunctionSize() {savedJunctionSize = junction.size();}
void restoreJunctionSize() {junction.resize(savedJunctionSize);}
// List any junctions in the event; for debug mainly.
void listJunctions(ostream& os = cout) const;
// Operator overloading allows to append one event to an existing one.
// Warning: particles should be OK, but some other information unreliable.
Event& operator+=(const Event& addEvent);
private:
// The Particle class needs to access particle data.
friend class Particle;
// Constants: could only be changed in the code itself.
static const int IPERLINE;
// Initialization data, normally only set once.
int startColTag;
// The event: a vector containing all particles (entries).
// The explicit use of Pythia8:: qualifier patches a limitation in ROOT.
vector<Pythia8::Particle> entry;
// The list of junctions.
// The explicit use of Pythia8:: qualifier patches a limitation in ROOT.
vector<Pythia8::Junction> junction;
// The maximum colour tag of the event so far.
int maxColTag;
// Saved entry and junction list sizes, for simple restoration.
int savedSize, savedJunctionSize;
// The scale of the event; linear quantity in GeV.
double scaleSave, scaleSecondSave;
// Header specification in event listing (at most 40 characters wide).
string headerList;
// Pointer to the particle data table.
// The //! below is ROOT notation that this member should not be saved.
ParticleData* particleDataPtr; //!
};
//==========================================================================
} // end namespace Pythia8
#endif // end Pythia8_Event_H
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