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diff --git a/DIPSY/DipoleEventHandler.cc b/DIPSY/DipoleEventHandler.cc
--- a/DIPSY/DipoleEventHandler.cc
+++ b/DIPSY/DipoleEventHandler.cc
@@ -1,840 +1,841 @@
// -*- C++ -*-
//
// This is the implementation of the non-inlined, non-templated member
// functions of the DipoleEventHandler class.
//
#include "DipoleEventHandler.h"
#include "SimpleProtonState.h"
#include "PhotonDipoleState.h"
#include "Parton.h"
#include "OldStyleEmitter.h"
#include "ThePEG/Interface/Switch.h"
#include "PT1DEmitter.h"
#include "ThePEG/Repository/EventGenerator.h"
#include "ThePEG/Repository/CurrentGenerator.h"
#include "ThePEG/Repository/UseRandom.h"
#include "ThePEG/Handlers/LuminosityFunction.h"
#include "ThePEG/Interface/ClassDocumentation.h"
#include "ThePEG/Interface/Parameter.h"
#include "ThePEG/Interface/Reference.h"
#include "ThePEG/Interface/RefVector.h"
#include "ThePEG/Config/algorithm.h"
#include "gsl/gsl_sf_bessel.h"
#include "ThePEG/Utilities/Current.h"
#include "ThePEG/Cuts/Cuts.h"
#include "ThePEG/PDF/PartonExtractor.h"
#include "ThePEG/Utilities/Debug.h"
#include "ThePEG/Utilities/DebugItem.h"
#include "ThePEG/Persistency/PersistentOStream.h"
#include "ThePEG/Persistency/PersistentIStream.h"
#include "CPUTimer.h"
#include <iostream>
#include <fstream>
using namespace DIPSY;
DipoleEventHandler::DipoleEventHandler()
: EventHandler(false), theNColours(9), theRMax(3.5*InvGeV),
theBaryonSize(0.0*InvGeV),
theCoherenceRange(0.5*InvGeV), theEffectivePartonMode(0), theCollisionType(0),
doShowHistory(false), theLambdaQCD(0.22*GeV), theNF(0),
theFixedAlphaS(0.0), theExternalAlphaS(ASPtr()),
theWFR(WaveFunctionPtr()), theWFL(WaveFunctionPtr()),
theBGen(ImpactParameterGeneratorPtr()), theYFrame(0.5), theFudgeME(false),
thePreSamples(1000), thePreSampleL(1), thePreSampleR(1), thePreSampleB(1),
theXSecFn(DipoleXSecPtr()), theEmitter(EmitterPtr()),
theSwinger(SwingerPtr()) {}
DipoleEventHandler::~DipoleEventHandler() {}
IBPtr DipoleEventHandler::clone() const {
return new_ptr(*this);
}
IBPtr DipoleEventHandler::fullclone() const {
return new_ptr(*this);
}
double DipoleEventHandler::elapsed() {
static long last = 0;
long el = clock() - last;
last += el;
return double(el)*0.000001;
}
void DipoleEventHandler::presample() {
//redirect diffractive runs, as the cross section calculation
//then requires more than a single loop over collisions.
if ( collisionType() == 1 ) return diffractivePresample();
//Set up before the loop
Current<DipoleEventHandler> current(this);
for_each(analyses, mem_fun(&DipoleAnalysisHandler::initialize));
CrossSection xmax = 0.0*picobarn;
CrossSection xnmax = 0.0*picobarn;
elapsed();
generator()->log()
<< endl << "Starting DIPSY run at CoM energy "
<< lumiFn().maximumCMEnergy()/GeV << " GeV" << endl;
//Loop over collisions
for ( int i = 0, N = preSamples(); i < N; ++i ) {
//Setup before collision. Energy, jacobian, luminosity.
Energy W = lumiFn().maximumCMEnergy();
double jac = 1.0;
pair<double,double> ll(1.0, 1.0);
if ( int ndim = lumiFn().nDim(make_pair(WFL().particle(), WFR().particle())) ) {
vector<double> r = UseRandom::rndvec(ndim);
ll = lumiFn().generateLL(&(r[0]), jac);
W *= exp(-0.5*(ll.first + ll.second));
}
//Find the p+ (or p-) of each state.
Energy2 a = WFL().m2() - WFR().m2() + sqr(W);
Energy PL = (a + sqrt(sqr(a) - WFL().m2()*sqr(W)))*0.5/W;
a = WFR().m2() - WFL().m2() + sqr(W);
Energy PR = (a + sqrt(sqr(a) - WFR().m2()*sqr(W)))*0.5/W;
//Create the dipole states and impact parameters.
vector<DipoleStatePtr> vl(preSampleL());
vector<DipoleStatePtr> vr(preSampleR());
vector<ImpactParameters> vb(preSampleB());
vector< vector< vector<double> > >
probs(preSampleL(),
vector< vector<double> >(preSampleR(), vector<double>(preSampleB(), 0.0)));
// Setup a number of left- and right-moving states
double highYL = 0.0;
for ( int il = 0; il < preSampleL(); ++il ) {
DipoleStatePtr dl = WFL().generate(*this, PL);
vl[il] = dl;
dl->collidingEnergy(PR);
highYL += dl->highestY();
}
double highYR = 0.0;
for ( int ir = 0; ir < preSampleR(); ++ir ) {
DipoleStatePtr dr = WFR().generate(*this, PR);
vr[ir] = dr;
dr->collidingEnergy(PL);
highYR += dr->highestY();
}
// Evolve the states
double y0 = interactionFrame(highYL/double(preSampleL()), -highYR/double(preSampleR()));
for ( int il = 0; il < preSampleL(); ++il ) {
vl[il]->evolve(vl[il]->lowestY(), y0);
vl[il]->unifyColourSystems();
}
for ( int ir = 0; ir < preSampleR(); ++ir ) {
vr[ir]->evolve(vr[ir]->lowestY(), -y0);
vr[ir]->unifyColourSystems();
}
for ( int ib = 0; ib < preSampleB(); ++ib ) {
ImpactParameters b = bGen().generate();
vb[ib] = b;
}
for ( int il = 0; il < preSampleL(); ++il )
for ( int ir = 0; ir < preSampleR(); ++ir )
for ( int ib = 0; ib < preSampleB(); ++ib ) {
DipoleStatePtr dl =vl[il];
DipoleStatePtr dr =vr[ir];
ImpactParameters b = vb[ib];
//Calculate interaction probability, and apply all the weights
double prob = xSecFn().sumf(*dr, *dl, b);
probs[il][ir][ib] = prob;
CrossSection weight = sqr(hbarc)*dr->weight()*dl->weight()*b.weight()*jac;
//This is the contribution to the non-diffractive
//cross section 1 - exp(-2(amp)^2)
CrossSection x = weight*xSecFn().unitarize(2.0*prob);
if ( x > xmax ) {
xnmax = xmax;
xmax = x;
} else
xnmax = max(x, xnmax);
//Call the analysis (which calculates cross sections)
for ( int i = 0, N = analyses.size(); i < N; ++i )
analyses[i]->analyze(*dr, *dl, b, xSecFn(), prob, weight);
}
// Call the analysis (which calculates cross sections) for all
// systems and impact parameters.
for ( int i = 0, N = analyses.size(); i < N; ++i )
analyses[i]->analyze(vr, vl, vb, xSecFn(), probs, jac);
}
//Write output (also from the called analyses) to log file.
if ( preSamples() > 0 ) {
generator()->log()
<< "Presampled " << preSamples() << " collisions ("
<< elapsed()/max(preSamples(),0) << " seconds per collisions)" << endl
<< "Maximum cross section: "
<< ouniterr(xmax, xmax-xnmax, nanobarn) << " nb." <<endl;
for_each(analyses,
bind2nd(mem_fun(&DipoleAnalysisHandler::finalize),
preSamples()*preSampleL()*preSampleR()*preSampleB()));
generator()->log() << endl;
}
stats = XSecStat(xmax > 0.0*nanobarn? xmax: 1.0*millibarn);
}
void DipoleEventHandler::diffractivePresample() {
//Setup before
Current<DipoleEventHandler> current(this);
for_each(analyses, mem_fun(&DipoleAnalysisHandler::initialize));
CrossSection xmax = 0.0*picobarn;
CrossSection xnmax = 0.0*picobarn;
elapsed();
generator()->log()
<< endl << "Starting Diffractive DIPSY run at CoM energy "
<< lumiFn().maximumCMEnergy()/GeV << " GeV" << endl;
Energy W = lumiFn().maximumCMEnergy();
double jac = 1.0;
pair<double,double> ll(1.0, 1.0);
//Create the starting states from their wavefunction.
if ( int ndim = lumiFn().nDim(make_pair(WFL().particle(), WFR().particle())) ) {
vector<double> r = UseRandom::rndvec(ndim);
ll = lumiFn().generateLL(&(r[0]), jac);
W *= exp(-0.5*(ll.first + ll.second));
}
//Calculate the energy of each incoming state in this frame.
Energy2 a = WFL().m2() - WFR().m2() + sqr(W);
Energy PL = (a + sqrt(sqr(a) - WFL().m2()*sqr(W)))*0.5/W;
a = WFR().m2() - WFL().m2() + sqr(W);
Energy PR = (a + sqrt(sqr(a) - WFR().m2()*sqr(W)))*0.5/W;
//Set up rapidity intervals to evolve over.
double y0 = interactionFrame(-log(PL/sqrt(abs(WFL().m2()))), log(PR/sqrt(abs(WFR().m2()))));
//Pre-generate the virtual cascade, ie the ones from the
//elastic side (right side by default).
vector<DipoleStatePtr> virtualCascades;
for ( int i = 0, N = preSamples(); i < N; i ++ ) {
DipoleStatePtr virt = WFR().generate(*this, PR);
virt->collidingEnergy(PL);
virt->evolve(virt->lowestY(), -y0);
virtualCascades.push_back(virt);
}
CrossSection sigmaSD = ZERO;
QTY<4,0,0>::Type sigmaSD2 = ZERO;
//Now run main loop over the real (excited in final state) cascades.
for ( int i = 0, N = preSamples(); i < N; ++i ) {
DipoleStatePtr dl = WFL().generate(*this, PL);
dl->collidingEnergy(PR);
dl->evolve(dl->lowestY(), y0);
ImpactParameters b = bGen().generate();
double sum = 0.0;
double sumWeights = 0.0;
//Loop over the pregenerated virtual elastic
for ( int j = 0; j < N; j ++ ) {
double amp = xSecFn().unitarize(xSecFn().sumf(*virtualCascades[j], *dl, b));
sum += amp*virtualCascades[j]->weight();
sumWeights += virtualCascades[j]->weight();
}
double average = sum/sumWeights;
//Take statistics on inclusive single diffractive cross section.
CrossSection weight = sqr(hbarc)*dl->weight()*b.weight()*jac;
CrossSection x = weight*average;
sigmaSD += weight*sqr(average);
sigmaSD2 += sqr(weight*sqr(average));
if ( x > xmax ) {
xnmax = xmax;
xmax = x;
} else
xnmax = max(x, xnmax);
//Pass on to analysers.
for ( int j = 0, M = analyses.size(); j < M; ++j )
analyses[j]->analyze(*WFR().generate(*this, PR), *dl, b, xSecFn(), average, weight);
}
//Output results to log file.
if ( preSamples() > 0 ) {
sigmaSD /= preSamples();
sigmaSD2 /= preSamples();
//Estimate error from the fluctuations.
CrossSection err = sqrt((sigmaSD2 - sqr(sigmaSD))/preSamples());
generator()->log()
<< "Presampled " << preSamples() << " real cascades, collided with "
<< preSamples() << " virtual cascades ("
<< elapsed()/max(preSamples(),0) << " seconds per real cascade)" << endl
<< "Maximum cross section: "
<< ouniterr(xmax, xmax-xnmax, nanobarn) << " nb." <<endl
<< "Integrated single diffractive cross section up to y = " << y0
<< " is " << ouniterr(sigmaSD, err, nanobarn) << " nb." <<endl;
for_each(analyses,
bind2nd(mem_fun(&DipoleAnalysisHandler::finalize), preSamples()));
generator()->log() << endl;
}
stats = XSecStat(xmax > 0.0*nanobarn? xmax: 1.0*millibarn);
}
void DipoleEventHandler::initialize() {
Current<DipoleEventHandler> current(this);
theWFL->initialize(*this);
theWFR->initialize(*this);
}
EventPtr DipoleEventHandler::generateEvent() {
//Redirect diffractive events.
if ( collisionType() == 1 ) return generateDiffractiveEvent();
while ( true ) {
Current<DipoleEventHandler> current(this);
//Set up energy, jacobians and wavefunctions.
Energy W = lumiFn().maximumCMEnergy();
double jac = 1.0;
pair<double,double> ll(1.0, 1.0);
if ( int ndim = lumiFn().nDim(make_pair(WFL().particle(), WFR().particle())) ) {
vector<double> r = UseRandom::rndvec(ndim);
ll = lumiFn().generateLL(&(r[0]), jac);
}
//Find lightcone momenta.
Energy2 a = WFL().m2() - WFR().m2() + sqr(W);
Energy PL = (a + sqrt(sqr(a) - 4.0*WFL().m2()*sqr(W)))*0.5/W;
a = WFR().m2() - WFL().m2() + sqr(W);
Energy PR = (a + sqrt(sqr(a) - 4.0*WFR().m2()*sqr(W)))*0.5/W;
PPair inc(WFL().particle()->produceParticle(lightCone(PL, WFL().m2()/PL)),
WFR().particle()->produceParticle(lightCone(WFR().m2()/PR, PR)));
LorentzRotation cmboost =
lumiFn().getBoost()*LorentzRotation(0.0, 0.0, tanh(0.5*(ll.second - ll.first)));
inc.first->transform(cmboost);
inc.second->transform(cmboost);
//Create dipole states.
DipoleStatePtr dr = WFR().generate(*this, PR);
DipoleStatePtr dl = WFL().generate(*this, PL);
//in some settings, the states need to know about the
//energy of the other state.
dr->collidingEnergy(PL);
dl->collidingEnergy(PR);
double y0 = interactionFrame(dl->highestY(), -dr->highestY());
dr->evolve(dr->lowestY(), -y0);
dr->unifyColourSystems();
dl->evolve(dl->lowestY(), y0);
dl->unifyColourSystems();
// This generates the impact parameter depending on the position
//of the partons. Intention was to generate high-pt events more
//often by selecting a b such that two partons would end up
//very close to each other more often. Should work in theory, but
//didn't make as big difference as hoped, maybe due to too many
//of the high pTs coming from the cascade.
// vector<pair<Parton::Point, InvEnergy> > points1 = dl->points();
// vector<pair<Parton::Point, InvEnergy> > points2 = dr->points();
// ImpactParameters b = bGen().generateDynamic(points1, points2);
//Standard impact parameter generation.
ImpactParameters b = bGen().generate();
inc.first->setVertex
(LorentzPoint(hbarc*b.bVec().x()/2, hbarc*b.bVec().y()/2, ZERO, ZERO));
inc.second->setVertex
(LorentzPoint(-hbarc*b.bVec().x()/2, -hbarc*b.bVec().y()/2, ZERO, ZERO));
currentEvent(new_ptr(Event(inc, this, generator()->runName(),
generator()->currentEventNumber(), 1.0)));
currentCollision(new_ptr(Collision(inc, currentEvent(), this)));
if ( currentEvent() ) currentEvent()->addCollision(currentCollision());
currentStep(new_ptr(Step(currentCollision())));
currentCollision()->addStep(currentStep());
double genweight = sqr(hbarc)*dr->weight()*dl->weight()*b.weight()*jac/
stats.maxXSec();
//Pass to filler. This is where the final state is decided.
double prob = eventFiller().fill(*currentStep(), *this, inc, *dl, *dr, b);
double weight = prob*genweight;
stats.select(weight);
currentEvent()->weight(weight);
if ( weight <= 0.0 ) continue;
stats.accept();
try {
initGroups();
continueCollision();
return currentEvent();
}
catch (Veto) {
stats.reject(weight);
}
catch (Stop) {
break;
}
catch (Exception &) {
stats.reject(weight);
throw;
}
}
return currentEvent();
}
EventPtr DipoleEventHandler::generateDiffractiveEvent() {
//Very similar to generateEvent.
while ( true ) {
//Same setup as in the non-diffractive case.
Current<DipoleEventHandler> current(this);
Energy W = lumiFn().maximumCMEnergy();
double jac = 1.0;
pair<double,double> ll(1.0, 1.0);
if ( int ndim = lumiFn().nDim(make_pair(WFL().particle(), WFR().particle())) ) {
vector<double> r = UseRandom::rndvec(ndim);
ll = lumiFn().generateLL(&(r[0]), jac);
}
Energy2 a = WFL().m2() - WFR().m2() + sqr(W);
Energy PL = (a + sqrt(sqr(a) - 4.0*WFL().m2()*sqr(W)))*0.5/W;
a = WFR().m2() - WFL().m2() + sqr(W);
Energy PR = (a + sqrt(sqr(a) - 4.0*WFR().m2()*sqr(W)))*0.5/W;
PPair inc(WFL().particle()->produceParticle(lightCone(PL, WFL().m2()/PL)),
WFR().particle()->produceParticle(lightCone(WFL().m2()/PR, PR)));
LorentzRotation cmboost =
lumiFn().getBoost()*LorentzRotation(0.0, 0.0, tanh(0.5*(ll.second - ll.first)));
inc.first->transform(cmboost);
inc.second->transform(cmboost);
//create real excited valence. Evolution is done in diffFill.
DipoleStatePtr dr = WFL().generate(*this, PL);
//create elastic
DipoleStatePtr de = WFR().generate(*this, PR);
ImpactParameters b = bGen().generate();
inc.first->setVertex
(LorentzPoint(hbarc*b.bVec().x()/2, hbarc*b.bVec().y()/2, ZERO, ZERO));
inc.second->setVertex
(LorentzPoint(-hbarc*b.bVec().x()/2, -hbarc*b.bVec().y()/2, ZERO, ZERO));
currentEvent(new_ptr(Event(inc, this, generator()->runName(),
generator()->currentEventNumber(), 1.0)));
currentCollision(new_ptr(Collision(inc, currentEvent(), this)));
if ( currentEvent() ) currentEvent()->addCollision(currentCollision());
currentStep(new_ptr(Step(currentCollision())));
currentCollision()->addStep(currentStep());
double genweight = sqr(hbarc)*dr->weight()*de->weight()*b.weight()*jac/
stats.maxXSec();
//Call filler, which will be redirected to diffractive version.
double prob = eventFiller().fill(*currentStep(), *this, inc, *dr, *de, b);
double weight = prob*genweight;
if ( weight <= 0.0 ) continue;
if ( isnan(weight) ) {
continue;
}
stats.select(weight);
currentEvent()->weight(weight);
stats.accept();
try {
initGroups();
continueCollision();
return currentEvent();
}
catch (Veto) {
stats.reject(weight);
}
catch (Stop) {
break;
}
catch (Exception &) {
stats.reject(weight);
throw;
}
}
return currentEvent();
}
CrossSection DipoleEventHandler::integratedXSec() const {
return stats.xSec();
}
CrossSection DipoleEventHandler::integratedXSecErr() const {
return stats.xSecErr();
}
CrossSection DipoleEventHandler::maxXSec() const {
return stats.maxXSec();
}
CrossSection DipoleEventHandler::histogramScale() const {
return stats.xSec()/stats.sumWeights();
}
void DipoleEventHandler::statistics(ostream & os) const {
string line = "======================================="
"=======================================\n";
if ( stats.accepted() <= 0 ) {
os << line << "No events generated by event handler '" << name() << "'."
<< endl;
return;
}
os << line << "Statistics for event handler \'" << name() << "\':\n"
<< " "
<< "generated number of Cross-section\n"
<< " "
<< " events attempts (nb)\n";
os << line << "Total:" << setw(42) << stats.accepted() << setw(13)
<< stats.attempts() << setw(17)
<< ouniterr(stats.xSec(), stats.xSecErr(), nanobarn)
<< endl << line;
}
void DipoleEventHandler::doinit() throw(InitException) {
Current<DipoleEventHandler> current(this);
EventHandler::doinit();
}
void DipoleEventHandler::dofinish() {
generator()->log() << endl << "Ending DIPSY run at CoM energy "
<< lumiFn().maximumCMEnergy()/GeV << " GeV" << endl;
theEventFiller->finish();
EventHandler::dofinish();
CPUClock::dump(generator()->log());
}
void DipoleEventHandler::doinitrun() {
Current<DipoleEventHandler> current(this);
EventHandler::doinitrun();
theNErr = 0;
for_each(analyses, mem_fun(&DipoleAnalysisHandler::initrun));
if ( theSwinger ) theSwinger->initrun();
theEmitter->initrun();
theBGen->initrun();
theXSecFn->initrun();
theEventFiller->initrun();
theWFL->initrun();
theWFR->initrun();
if ( externalAlphaS() ) externalAlphaS()->initrun();
presample();
// Fix up a dummy XComb object
Energy emax = lumiFn().maximumCMEnergy();
cuts()->initialize(sqr(emax), 0.0);
cPDPair incoming = make_pair(WFL().particle(), WFR().particle());
PartonPairVec bins = partonExtractor()->getPartons(emax, incoming, *cuts());
theLastXComb = new_ptr(XComb(emax, incoming, this, partonExtractor(),
tCascHdlPtr(), bins[0], cuts()));
theLastXComb->lastSHat(sqr(emax));
theLastXComb->lastY(0.0);
theLastXComb->lastP1P2(make_pair(0.0, 0.0));
theLastXComb->lastL1L2(make_pair(0.0, 0.0));
theLastXComb->lastX1X2(make_pair(1.0, 1.0));
theLastXComb->lastScale(sqr(emax));
theLastXComb->lastAlphaS(1.0);
theLastXComb->lastAlphaEM(1.0/137.0);
+ partonExtractor()->select(theLastXComb);
}
void DipoleEventHandler::rebind(const TranslationMap & trans) throw(RebindException) {
// dummy = trans.translate(dummy);
EventHandler::rebind(trans);
}
IVector DipoleEventHandler::getReferences() {
IVector ret = EventHandler::getReferences();
// ret.push_back(dummy);
return ret;
}
double DipoleEventHandler::alphaS(InvEnergy r) const {
if ( fixedAlphaS() > 0.0 )
return fixedAlphaS();
else if ( LambdaQCD() > 0.0*GeV && LambdaQCD() < 2.0/rMax() )
return 6.0*Constants::pi/((33.0 - 2.0*nF())*
log(2.0/(min(r,rMax())*LambdaQCD())));
else if ( externalAlphaS() )
return externalAlphaS()->value(sqr(2.0/min(r,rMax())), SM());
else
return SM().alphaS(sqr(2.0/min(r,rMax())));
}
double DipoleEventHandler::interactionFrame(double ymin, double ymax) const {
double yframe = yFrame();
if ( yFrame() < -1.0 && yFrame() >= -1.5 ) {
double dum = -(yFrame() + 1.0);
yframe = UseRandom::rnd(dum, 1.0 - dum);
}
double y0 = ymin + yframe*(ymax - ymin);
if ( y0 > ymax ) y0 = max(ymin, ymax + (1.0 - yframe));
else if ( y0 < ymin ) y0 = min(ymax, ymin + yframe);
return y0;
}
void DipoleEventHandler::persistentOutput(PersistentOStream & os) const {
os << theNColours << ounit(theRMax, InvGeV) << ounit(theBaryonSize, InvGeV)
<< ounit(theCoherenceRange, InvGeV)
<< theEffectivePartonMode << theCollisionType << doShowHistory
<< ounit(theLambdaQCD, GeV) << theNF << theFixedAlphaS << theExternalAlphaS
<< theWFR << theWFL << theBGen << theYFrame << theFudgeME << thePreSamples << thePreSampleL
<< thePreSampleR << thePreSampleB << theXSecFn << theEmitter << theSwinger
<< theEventFiller << analyses << stats;
}
void DipoleEventHandler::persistentInput(PersistentIStream & is, int) {
is >> theNColours >> iunit(theRMax, InvGeV) >> iunit(theBaryonSize, InvGeV)
>> iunit(theCoherenceRange, InvGeV)
>> theEffectivePartonMode >> theCollisionType >> doShowHistory
>> iunit(theLambdaQCD, GeV) >> theNF >> theFixedAlphaS >> theExternalAlphaS
>> theWFR >> theWFL >> theBGen >> theYFrame >> theFudgeME >> thePreSamples >> thePreSampleL
>> thePreSampleR >> thePreSampleB >> theXSecFn >> theEmitter >> theSwinger
>> theEventFiller >> analyses >> stats;
}
// Static variable needed for the type description system in ThePEG.
#include "ThePEG/Utilities/DescribeClass.h"
DescribeClass<DipoleEventHandler,EventHandler>
describeDIPSYDipoleEventHandler("DIPSY::DipoleEventHandler",
"libAriadne5.so libDIPSY.so");
void DipoleEventHandler::Init() {
static ClassDocumentation<DipoleEventHandler> documentation
("The DipoleEventHandler is a special EventHandler capable of generating "
"minimum-bias events using the Lund version of the Mueller dipole model.");
static Parameter<DipoleEventHandler,int> interfaceNColours
("NColours",
"The number of different colour indices in the swing mechanism. Should be "
"\\f$N_c^2\\f$ but can be varied to investigate swing effects.",
&DipoleEventHandler::theNColours, 9, 3, 0,
true, false, Interface::lowerlim);
static Parameter<DipoleEventHandler,InvEnergy> interfaceRMax
("RMax",
"The general hadronic size in units of inverse GeV.",
&DipoleEventHandler::theRMax, InvGeV, 3.5*InvGeV, 0.0*InvGeV, 0*InvGeV,
true, false, Interface::lowerlim);
static Parameter<DipoleEventHandler,InvEnergy> interfaceCoherenceRange
("CoherenceRange",
"The maximum range at which partons are allowed to emit coherently."
"This is also used as maximum range in the DGLAP suppression",
&DipoleEventHandler::theCoherenceRange, InvGeV, 0.5*InvGeV, 0.0*InvGeV, 0*InvGeV,
true, false, Interface::lowerlim);
static Switch<DipoleEventHandler,int> interfaceEffectivePartonMode
("EffectivePartonMode",
"How the partons are grouped inteo effective partons.",
&DipoleEventHandler::theEffectivePartonMode, 0, true, false);
static SwitchOption interfaceEffectivePartonModeColours
(interfaceEffectivePartonMode,
"Colours",
"Groups with colour neighbours. Makes more sence since the "
"colour flow determines how the emissions are made, but the "
"swing makes this mode not always group up recoiling partons, "
"which can mess up availible phase space and ordering. "
"This is default.",
0);
static SwitchOption interfaceEffectivePartonModeFastColours
(interfaceEffectivePartonMode,
"FastColours",
"Groups with colour neighbours as for the \"Colour\" option, "
"but speed up the generation by caching different ranges for "
"the same parton.",
2);
static SwitchOption interfaceEffectivePartonModeFastColours2
(interfaceEffectivePartonMode,
"FastColours2",
"Groups with colour neighbours as for the \"FastColour\" option, "
"but speed up the generation by caching different ranges for "
"the same parton.",
3);
static SwitchOption interfaceEffectivePartonModeRelatives
(interfaceEffectivePartonMode,
"Relatives",
"Groups with parents and childs. Always pairs up with the "
"recoiling pt, and should get the phase space and ordering "
"correct, but makes the emissions depend on the history"
", not only current state.",
1);
static Switch<DipoleEventHandler,int> interfaceCollisionType
("CollisionType",
"What type of collison.",
&DipoleEventHandler::theCollisionType, 0, true, false);
static SwitchOption interfaceCollisionTypeNonDiffractive
(interfaceCollisionType,
"NonDiffractive",
"Should be self explanatory. :P",
0);
static SwitchOption interfaceTypeSingleDiffractive
(interfaceCollisionType,
"SingleDiffractive",
"Should be self explanatory. :P",
1);
static Parameter<DipoleEventHandler,bool> interfaceShowHistory
("ShowHistory",
"If the history of every event should be studied manually."
"Note that only final state events get studied, not the presamples.",
&DipoleEventHandler::doShowHistory, false, false, false,
true, false, Interface::lowerlim);
static Parameter<DipoleEventHandler,Energy> interfaceLambdaQCD
("LambdaQCD",
"The value of \\f$\\Lambda_{QCD}\\f$ to be used in the running coupling. "
"If zero, the <interface>AlphaS</interface> object will be used for the "
"coupling instead.",
&DipoleEventHandler::theLambdaQCD, GeV, 0.22*GeV, 0.0*GeV, 0*GeV,
true, false, Interface::lowerlim);
static Parameter<DipoleEventHandler,double> interfaceFixedAlphaS
("FixedAlphaS",
"The value of the constant coupling. If zero, a running coupling is "
"assumed.",
&DipoleEventHandler::theFixedAlphaS, 0.0, 0.0, 0,
true, false, Interface::lowerlim);
static Reference<DipoleEventHandler,AlphaSBase> interfaceExternalAlphaS
("ExternalAlphaS",
"An external \\f$\\alpha_S\\f$ object to be used if "
"<interface>LambdaQCD</interface> is zero. If null the object "
"specified in the overall StandardModel object will be used insted.",
&DipoleEventHandler::theExternalAlphaS, true, false, true, true, false);
static Parameter<DipoleEventHandler,int> interfaceNF
("NF",
"The number of flavours to be used in the running coupling. Not active "
"if an external running coupling (<interface>ExternalAlphaS</interface> "
"is used.",
&DipoleEventHandler::theNF, 3, 1, 0,
true, false, Interface::lowerlim);
static Reference<DipoleEventHandler,WaveFunction> interfaceWFR
("WFR",
"The wave function of the incoming particle along the positive z-axis.",
&DipoleEventHandler::theWFR, true, false, true, false, false);
static Reference<DipoleEventHandler,WaveFunction> interfaceWFL
("WFL",
"The wave function of the incoming particle along the negative z-axis.",
&DipoleEventHandler::theWFL, true, false, true, false, false);
static Parameter<DipoleEventHandler,double> interfaceYFrame
("YFrametest",
"Indicate in which frame the dipole systems should collide. A value of "
"0.5 means that both systems will be evolved an equal rapidity distance. "
"0.0 (1.0) means that the right(left)-moving system will not be evolved "
"at all while the left(right)-moving system will be evolved as much as "
"possible. A value larger than 1.0 (less than 0.0) means the right-(left-)moving "
"system will be evolved a fixed rapidity interval YFrametest - 1 (-YFrametest)",
&DipoleEventHandler::theYFrame, 0.5, 0.0, 1.0,
true, false, Interface::nolimits);
static Switch<DipoleEventHandler,bool> interfaceFudgeME
("FudgeME",
"Indicate whether a fudge factor should be included to tame the high-pt tail "
"according to an approximate matrix element correction.",
&DipoleEventHandler::theFudgeME, false, true, false);
static SwitchOption interfaceFudgeMEFudge
(interfaceFudgeME,
"Fudge",
"Include fudge factor",
true);
static SwitchOption interfaceFudgeMENoFudge
(interfaceFudgeME,
"NoFudge",
"Do not include fudge factor",
false);
static Parameter<DipoleEventHandler,int> interfacePreSamples
("PreSamples",
"The number of collisions to analyze in the presampling.",
&DipoleEventHandler::thePreSamples, 1000, 0, 0,
true, false, Interface::lowerlim);
static Parameter<DipoleEventHandler,int> interfacePreSampleL
("PreSampleL",
"The number of left-moving systems to generate for each presample.",
&DipoleEventHandler::thePreSampleL, 1, 1, 0,
true, false, Interface::lowerlim);
static Parameter<DipoleEventHandler,int> interfacePreSampleR
("PreSampleR",
"The number of right-moving systems to generate for each presample.",
&DipoleEventHandler::thePreSampleR, 1, 1, 0,
true, false, Interface::lowerlim);
static Parameter<DipoleEventHandler,int> interfacePreSampleB
("PreSampleB",
"The number ofimpact parameters to generate for each presample.",
&DipoleEventHandler::thePreSampleB, 1, 1, 0,
true, false, Interface::lowerlim);
static Reference<DipoleEventHandler,DipoleXSec> interfaceXSecFn
("XSecFn",
"The object responsible for calculating the cross section for two "
"colliding dipole systems.",
&DipoleEventHandler::theXSecFn, true, false, true, false, false);
static Reference<DipoleEventHandler,ImpactParameterGenerator> interfaceBGen
("BGen",
"The object responsible for generating the impact parameters.",
&DipoleEventHandler::theBGen, true, false, true, false, false);
static Reference<DipoleEventHandler,Emitter> interfaceEmitter
("Emitter",
"The object responsible for generating and performing dipole emissions "
"of gluons.",
&DipoleEventHandler::theEmitter, true, false, true, false, false);
static Reference<DipoleEventHandler,Swinger> interfaceSwinger
("Swinger",
"The object responsible for generating and performing dipole swings.",
&DipoleEventHandler::theSwinger, true, false, true, true, false);
static Reference<DipoleEventHandler,EventFiller> interfaceEventFiller
("EventFiller",
"The object responsible for filling an event with final state gluons.",
&DipoleEventHandler::theEventFiller, true, false, true, false, false);
static RefVector<DipoleEventHandler,DipoleAnalysisHandler>
interfaceAnalysisHandlers
("AnalysisHandlers",
"A list of analysis to be performed in the presample phase.",
&DipoleEventHandler::analyses, -1, true, false, true, false, false);
static Parameter<DipoleEventHandler,InvEnergy> interfaceBaryonSize
("BaryonSize",
"The typical size of a baryon to be used by wave functions not "
"defining their own. If zero, <interface>RMax</interface> will "
"be used instead.",
&DipoleEventHandler::theBaryonSize, InvGeV, 0.0*InvGeV, 0.0*InvGeV, 0*InvGeV,
true, false, Interface::lowerlim);
}

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