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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/Beam.hh"
#include "Rivet/Projections/Sphericity.hh"
#include "Rivet/Projections/Thrust.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Projections/ParisiTensor.hh"
#include "Rivet/Projections/Hemispheres.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/ChargedFinalState.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// @brief DELPHI event shapes and identified particle spectra
/// @author Andy Buckley
/// @author Hendrik Hoeth
///
/// This is the paper which was used for the original PROFESSOR MC tuning
/// study. It studies a wide range of e+ e- event shape variables, differential
/// jet rates in the Durham and JADE schemes, and incorporates identified
/// particle spectra, from other LEP analyses.
///
/// @par Run conditions
///
/// @arg LEP1 beam energy: \f$ \sqrt{s} = \f$ 91.2 GeV
/// @arg Run with generic QCD events.
/// @arg No \f$ p_\perp^\text{min} \f$ cutoff is required
class DELPHI_1996_S3430090 : public Analysis {
public:
RIVET_DEFAULT_ANALYSIS_CTOR(DELPHI_1996_S3430090);
/// @name Analysis methods
/// @{
void init() {
declare(Beam(), "Beams");
// Don't try to introduce a pT or eta cut here. It's all corrected
// back. (See Section 2 of the paper.)
const ChargedFinalState cfs;
declare(cfs, "FS");
declare(UnstableParticles(), "UFS");
declare(FastJets(cfs, FastJets::JADE, 0.7), "JadeJets");
declare(FastJets(cfs, FastJets::DURHAM, 0.7), "DurhamJets");
declare(Sphericity(cfs), "Sphericity");
declare(ParisiTensor(cfs), "Parisi");
const Thrust thrust(cfs);
declare(thrust, "Thrust");
declare(Hemispheres(thrust), "Hemispheres");
book(_histPtTIn, 1, 1, 1);
book(_histPtTOut,2, 1, 1);
book(_histPtSIn, 3, 1, 1);
book(_histPtSOut,4, 1, 1);
book(_histRapidityT, 5, 1, 1);
book(_histRapidityS, 6, 1, 1);
book(_histScaledMom, 7, 1, 1);
book(_histLogScaledMom, 8, 1, 1);
book(_histPtTOutVsXp ,9, 1, 1);
book(_histPtVsXp ,10, 1, 1);
book(_hist1MinusT, 11, 1, 1);
book(_histTMajor, 12, 1, 1);
book(_histTMinor, 13, 1, 1);
book(_histOblateness, 14, 1, 1);
book(_histSphericity, 15, 1, 1);
book(_histAplanarity, 16, 1, 1);
book(_histPlanarity, 17, 1, 1);
book(_histCParam, 18, 1, 1);
book(_histDParam, 19, 1, 1);
book(_histHemiMassH, 20, 1, 1);
book(_histHemiMassL, 21, 1, 1);
book(_histHemiMassD, 22, 1, 1);
book(_histHemiBroadW, 23, 1, 1);
book(_histHemiBroadN, 24, 1, 1);
book(_histHemiBroadT, 25, 1, 1);
book(_histHemiBroadD, 26, 1, 1);
// Binned in y_cut
book(_histDiffRate2Durham, 27, 1, 1);
book(_histDiffRate2Jade, 28, 1, 1);
book(_histDiffRate3Durham, 29, 1, 1);
book(_histDiffRate3Jade, 30, 1, 1);
book(_histDiffRate4Durham, 31, 1, 1);
book(_histDiffRate4Jade, 32, 1, 1);
// Binned in cos(chi)
book(_histEEC, 33, 1, 1);
book(_histAEEC, 34, 1, 1);
book(_histMultiCharged, 35, 1, 1);
book(_histMultiPiPlus, 36, 1, 1);
book(_histMultiPi0, 36, 1, 2);
book(_histMultiKPlus, 36, 1, 3);
book(_histMultiK0, 36, 1, 4);
book(_histMultiEta, 36, 1, 5);
book(_histMultiEtaPrime, 36, 1, 6);
book(_histMultiDPlus, 36, 1, 7);
book(_histMultiD0, 36, 1, 8);
book(_histMultiBPlus0, 36, 1, 9);
book(_histMultiF0, 37, 1, 1);
book(_histMultiRho, 38, 1, 1);
book(_histMultiKStar892Plus, 38, 1, 2);
book(_histMultiKStar892_0, 38, 1, 3);
book(_histMultiPhi, 38, 1, 4);
book(_histMultiDStar2010Plus, 38, 1, 5);
book(_histMultiF2, 39, 1, 1);
book(_histMultiK2Star1430_0, 39, 1, 2);
book(_histMultiP, 40, 1, 1);
book(_histMultiLambda0, 40, 1, 2);
book(_histMultiXiMinus, 40, 1, 3);
book(_histMultiOmegaMinus, 40, 1, 4);
book(_histMultiDeltaPlusPlus, 40, 1, 5);
book(_histMultiSigma1385Plus, 40, 1, 6);
book(_histMultiXi1530_0, 40, 1, 7);
book(_histMultiLambdaB0, 40, 1, 8);
book(_weightedTotalPartNum,"_TotalPartNum");
book(_passedCutWeightSum, "_passedCutWeightSum");
book(_passedCut3WeightSum, "_passedCut3WeightSum");
book(_passedCut4WeightSum, "_passedCut4WeightSum");
book(_passedCut5WeightSum, "_passedCut5WeightSum");
}
void analyze(const Event& e) {
// First, veto on leptonic events by requiring at least 4 charged FS particles
const FinalState& fs = apply<FinalState>(e, "FS");
const size_t numParticles = fs.particles().size();
// Even if we only generate hadronic events, we still need a cut on numCharged >= 2.
if (numParticles < 2) {
MSG_DEBUG("Failed leptonic event cut");
vetoEvent;
}
MSG_DEBUG("Passed leptonic event cut");
_passedCutWeightSum->fill();
_weightedTotalPartNum->fill(numParticles);
// Get beams and average beam momentum
const ParticlePair& beams = apply<Beam>(e, "Beams").beams();
const double meanBeamMom = ( beams.first.p3().mod() +
beams.second.p3().mod() ) / 2.0;
MSG_DEBUG("Avg beam momentum = " << meanBeamMom);
// Thrusts
MSG_DEBUG("Calculating thrust");
const Thrust& thrust = apply<Thrust>(e, "Thrust");
_hist1MinusT->fill(1 - thrust.thrust());
_histTMajor->fill(thrust.thrustMajor());
_histTMinor->fill(thrust.thrustMinor());
_histOblateness->fill(thrust.oblateness());
// Jets
const FastJets& durjet = apply<FastJets>(e, "DurhamJets");
const FastJets& jadejet = apply<FastJets>(e, "JadeJets");
if (numParticles >= 3) {
_passedCut3WeightSum->fill();
if (durjet.clusterSeq()) _histDiffRate2Durham->fill(durjet.clusterSeq()->exclusive_ymerge_max(2));
if (jadejet.clusterSeq()) _histDiffRate2Jade->fill(jadejet.clusterSeq()->exclusive_ymerge_max(2));
}
if (numParticles >= 4) {
_passedCut4WeightSum->fill();
if (durjet.clusterSeq()) _histDiffRate3Durham->fill(durjet.clusterSeq()->exclusive_ymerge_max(3));
if (jadejet.clusterSeq()) _histDiffRate3Jade->fill(jadejet.clusterSeq()->exclusive_ymerge_max(3));
}
if (numParticles >= 5) {
_passedCut5WeightSum->fill();
if (durjet.clusterSeq()) _histDiffRate4Durham->fill(durjet.clusterSeq()->exclusive_ymerge_max(4));
if (jadejet.clusterSeq()) _histDiffRate4Jade->fill(jadejet.clusterSeq()->exclusive_ymerge_max(4));
}
// Sphericities
MSG_DEBUG("Calculating sphericity");
const Sphericity& sphericity = apply<Sphericity>(e, "Sphericity");
_histSphericity->fill(sphericity.sphericity());
_histAplanarity->fill(sphericity.aplanarity());
_histPlanarity->fill(sphericity.planarity());
// C & D params
MSG_DEBUG("Calculating Parisi params");
const ParisiTensor& parisi = apply<ParisiTensor>(e, "Parisi");
_histCParam->fill(parisi.C());
_histDParam->fill(parisi.D());
// Hemispheres
MSG_DEBUG("Calculating hemisphere variables");
const Hemispheres& hemi = apply<Hemispheres>(e, "Hemispheres");
_histHemiMassH->fill(hemi.scaledM2high());
_histHemiMassL->fill(hemi.scaledM2low());
_histHemiMassD->fill(hemi.scaledM2diff());
_histHemiBroadW->fill(hemi.Bmax());
_histHemiBroadN->fill(hemi.Bmin());
_histHemiBroadT->fill(hemi.Bsum());
_histHemiBroadD->fill(hemi.Bdiff());
// Iterate over all the charged final state particles.
double Evis = 0.0;
double Evis2 = 0.0;
MSG_DEBUG("About to iterate over charged FS particles");
for (const Particle& p : fs.particles()) {
// Get momentum and energy of each particle.
const Vector3 mom3 = p.p3();
const double energy = p.E();
Evis += energy;
// Scaled momenta.
const double mom = mom3.mod();
const double scaledMom = mom/meanBeamMom;
const double logInvScaledMom = -std::log(scaledMom);
_histLogScaledMom->fill(logInvScaledMom);
_histScaledMom->fill(scaledMom);
// Get momenta components w.r.t. thrust and sphericity.
const double momT = dot(thrust.thrustAxis(), mom3);
const double momS = dot(sphericity.sphericityAxis(), mom3);
const double pTinT = dot(mom3, thrust.thrustMajorAxis());
const double pToutT = dot(mom3, thrust.thrustMinorAxis());
const double pTinS = dot(mom3, sphericity.sphericityMajorAxis());
const double pToutS = dot(mom3, sphericity.sphericityMinorAxis());
const double pT = sqrt(pow(pTinT, 2) + pow(pToutT, 2));
_histPtTIn->fill(fabs(pTinT/GeV));
_histPtTOut->fill(fabs(pToutT/GeV));
_histPtSIn->fill(fabs(pTinS/GeV));
_histPtSOut->fill(fabs(pToutS/GeV));
_histPtVsXp->fill(scaledMom, fabs(pT/GeV));
_histPtTOutVsXp->fill(scaledMom, fabs(pToutT/GeV));
// Calculate rapidities w.r.t. thrust and sphericity.
const double rapidityT = 0.5 * std::log((energy + momT) / (energy - momT));
const double rapidityS = 0.5 * std::log((energy + momS) / (energy - momS));
_histRapidityT->fill(fabs(rapidityT));
_histRapidityS->fill(fabs(rapidityS));
MSG_TRACE(fabs(rapidityT) << " " << scaledMom/GeV);
}
Evis2 = Evis*Evis;
// (A)EEC
// Need iterators since second loop starts at current outer loop iterator, i.e. no "for" here!
for (Particles::const_iterator p_i = fs.particles().begin(); p_i != fs.particles().end(); ++p_i) {
for (Particles::const_iterator p_j = p_i; p_j != fs.particles().end(); ++p_j) {
if (p_i == p_j) continue;
const Vector3 mom3_i = p_i->momentum().p3();
const Vector3 mom3_j = p_j->momentum().p3();
const double energy_i = p_i->momentum().E();
const double energy_j = p_j->momentum().E();
const double cosij = dot(mom3_i.unit(), mom3_j.unit());
const double eec = (energy_i*energy_j) / Evis2;
_histEEC->fill(cosij, eec);
if (cosij < 0)
_histAEEC->fill( cosij, eec);
else
_histAEEC->fill(-cosij, -eec);
}
}
_histMultiCharged->fill(_histMultiCharged->bin(0).xMid(), numParticles);
// Final state of unstable particles to get particle spectra
const UnstableParticles& ufs = apply<UnstableParticles>(e, "UFS");
for (const Particle& p : ufs.particles()) {
int id = p.abspid();
switch (id) {
case 211:
_histMultiPiPlus->fill(_histMultiPiPlus->bin(0).xMid());
break;
case 111:
_histMultiPi0->fill(_histMultiPi0->bin(0).xMid());
break;
case 321:
_histMultiKPlus->fill(_histMultiKPlus->bin(0).xMid());
break;
case 130:
case 310:
_histMultiK0->fill(_histMultiK0->bin(0).xMid());
break;
case 221:
_histMultiEta->fill(_histMultiEta->bin(0).xMid());
break;
case 331:
_histMultiEtaPrime->fill(_histMultiEtaPrime->bin(0).xMid());
break;
case 411:
_histMultiDPlus->fill(_histMultiDPlus->bin(0).xMid());
break;
case 421:
_histMultiD0->fill(_histMultiD0->bin(0).xMid());
break;
case 511:
case 521:
case 531:
_histMultiBPlus0->fill(_histMultiBPlus0->bin(0).xMid());
break;
case 9010221:
_histMultiF0->fill(_histMultiF0->bin(0).xMid());
break;
case 113:
_histMultiRho->fill(_histMultiRho->bin(0).xMid());
break;
case 323:
_histMultiKStar892Plus->fill(_histMultiKStar892Plus->bin(0).xMid());
break;
case 313:
_histMultiKStar892_0->fill(_histMultiKStar892_0->bin(0).xMid());
break;
case 333:
_histMultiPhi->fill(_histMultiPhi->bin(0).xMid());
break;
case 413:
_histMultiDStar2010Plus->fill(_histMultiDStar2010Plus->bin(0).xMid());
break;
case 225:
_histMultiF2->fill(_histMultiF2->bin(0).xMid());
break;
case 315:
_histMultiK2Star1430_0->fill(_histMultiK2Star1430_0->bin(0).xMid());
break;
case 2212:
_histMultiP->fill(_histMultiP->bin(0).xMid());
break;
case 3122:
_histMultiLambda0->fill(_histMultiLambda0->bin(0).xMid());
break;
case 3312:
_histMultiXiMinus->fill(_histMultiXiMinus->bin(0).xMid());
break;
case 3334:
_histMultiOmegaMinus->fill(_histMultiOmegaMinus->bin(0).xMid());
break;
case 2224:
_histMultiDeltaPlusPlus->fill(_histMultiDeltaPlusPlus->bin(0).xMid());
break;
case 3114:
_histMultiSigma1385Plus->fill(_histMultiSigma1385Plus->bin(0).xMid());
break;
case 3324:
_histMultiXi1530_0->fill(_histMultiXi1530_0->bin(0).xMid());
break;
case 5122:
_histMultiLambdaB0->fill(_histMultiLambdaB0->bin(0).xMid());
break;
}
}
}
// Finalize
void finalize() {
// Normalize inclusive single particle distributions to the average number
// of charged particles per event.
const double avgNumParts = dbl(*_weightedTotalPartNum / *_passedCutWeightSum);
normalize(_histPtTIn, avgNumParts);
normalize(_histPtTOut, avgNumParts);
normalize(_histPtSIn, avgNumParts);
normalize(_histPtSOut, avgNumParts);
normalize(_histRapidityT, avgNumParts);
normalize(_histRapidityS, avgNumParts);
normalize(_histLogScaledMom, avgNumParts);
normalize(_histScaledMom, avgNumParts);
scale(_histEEC, 1.0 / *_passedCutWeightSum);
scale(_histAEEC, 1.0 / *_passedCutWeightSum);
scale(_histMultiCharged, 1.0 / *_passedCutWeightSum);
scale(_histMultiPiPlus, 1.0 / *_passedCutWeightSum);
scale(_histMultiPi0, 1.0 / *_passedCutWeightSum);
scale(_histMultiKPlus, 1.0 / *_passedCutWeightSum);
scale(_histMultiK0, 1.0 / *_passedCutWeightSum);
scale(_histMultiEta, 1.0 / *_passedCutWeightSum);
scale(_histMultiEtaPrime, 1.0 / *_passedCutWeightSum);
scale(_histMultiDPlus, 1.0 / *_passedCutWeightSum);
scale(_histMultiD0, 1.0 / *_passedCutWeightSum);
scale(_histMultiBPlus0, 1.0 / *_passedCutWeightSum);
scale(_histMultiF0, 1.0 / *_passedCutWeightSum);
scale(_histMultiRho, 1.0 / *_passedCutWeightSum);
scale(_histMultiKStar892Plus, 1.0 / *_passedCutWeightSum);
scale(_histMultiKStar892_0, 1.0 / *_passedCutWeightSum);
scale(_histMultiPhi, 1.0 / *_passedCutWeightSum);
scale(_histMultiDStar2010Plus, 1.0 / *_passedCutWeightSum);
scale(_histMultiF2, 1.0 / *_passedCutWeightSum);
scale(_histMultiK2Star1430_0, 1.0 / *_passedCutWeightSum);
scale(_histMultiP, 1.0 / *_passedCutWeightSum);
scale(_histMultiLambda0, 1.0 / *_passedCutWeightSum);
scale(_histMultiXiMinus, 1.0 / *_passedCutWeightSum);
scale(_histMultiOmegaMinus, 1.0 / *_passedCutWeightSum);
scale(_histMultiDeltaPlusPlus, 1.0 / *_passedCutWeightSum);
scale(_histMultiSigma1385Plus, 1.0 / *_passedCutWeightSum);
scale(_histMultiXi1530_0, 1.0 / *_passedCutWeightSum);
scale(_histMultiLambdaB0, 1.0 / *_passedCutWeightSum);
scale(_hist1MinusT, 1.0 / *_passedCutWeightSum);
scale(_histTMajor, 1.0 / *_passedCutWeightSum);
scale(_histTMinor, 1.0 / *_passedCutWeightSum);
scale(_histOblateness, 1.0 / *_passedCutWeightSum);
scale(_histSphericity, 1.0 / *_passedCutWeightSum);
scale(_histAplanarity, 1.0 / *_passedCutWeightSum);
scale(_histPlanarity, 1.0 / *_passedCutWeightSum);
scale(_histHemiMassD, 1.0 / *_passedCutWeightSum);
scale(_histHemiMassH, 1.0 / *_passedCutWeightSum);
scale(_histHemiMassL, 1.0 / *_passedCutWeightSum);
scale(_histHemiBroadW, 1.0 / *_passedCutWeightSum);
scale(_histHemiBroadN, 1.0 / *_passedCutWeightSum);
scale(_histHemiBroadT, 1.0 / *_passedCutWeightSum);
scale(_histHemiBroadD, 1.0 / *_passedCutWeightSum);
scale(_histCParam, 1.0 / *_passedCutWeightSum);
scale(_histDParam, 1.0 / *_passedCutWeightSum);
scale(_histDiffRate2Durham, 1.0 / *_passedCut3WeightSum);
scale(_histDiffRate2Jade, 1.0 / *_passedCut3WeightSum);
scale(_histDiffRate3Durham, 1.0 / *_passedCut4WeightSum);
scale(_histDiffRate3Jade, 1.0 / *_passedCut4WeightSum);
scale(_histDiffRate4Durham, 1.0 / *_passedCut5WeightSum);
scale(_histDiffRate4Jade, 1.0 / *_passedCut5WeightSum);
}
/// @}
private:
/// Store the weighted sums of numbers of charged / charged+neutral
/// particles - used to calculate average number of particles for the
/// inclusive single particle distributions' normalisations.
CounterPtr _weightedTotalPartNum;
/// @name Sums of weights past various cuts
/// @{
CounterPtr _passedCutWeightSum;
CounterPtr _passedCut3WeightSum;
CounterPtr _passedCut4WeightSum;
CounterPtr _passedCut5WeightSum;
/// @}
/// @name Histograms
/// @{
Histo1DPtr _histPtTIn;
Histo1DPtr _histPtTOut;
Histo1DPtr _histPtSIn;
Histo1DPtr _histPtSOut;
Histo1DPtr _histRapidityT;
Histo1DPtr _histRapidityS;
Histo1DPtr _histScaledMom, _histLogScaledMom;
Profile1DPtr _histPtTOutVsXp, _histPtVsXp;
Histo1DPtr _hist1MinusT;
Histo1DPtr _histTMajor;
Histo1DPtr _histTMinor;
Histo1DPtr _histOblateness;
Histo1DPtr _histSphericity;
Histo1DPtr _histAplanarity;
Histo1DPtr _histPlanarity;
Histo1DPtr _histCParam;
Histo1DPtr _histDParam;
Histo1DPtr _histHemiMassD;
Histo1DPtr _histHemiMassH;
Histo1DPtr _histHemiMassL;
Histo1DPtr _histHemiBroadW;
Histo1DPtr _histHemiBroadN;
Histo1DPtr _histHemiBroadT;
Histo1DPtr _histHemiBroadD;
Histo1DPtr _histDiffRate2Durham;
Histo1DPtr _histDiffRate2Jade;
Histo1DPtr _histDiffRate3Durham;
Histo1DPtr _histDiffRate3Jade;
Histo1DPtr _histDiffRate4Durham;
Histo1DPtr _histDiffRate4Jade;
Histo1DPtr _histEEC, _histAEEC;
Histo1DPtr _histMultiCharged;
Histo1DPtr _histMultiPiPlus;
Histo1DPtr _histMultiPi0;
Histo1DPtr _histMultiKPlus;
Histo1DPtr _histMultiK0;
Histo1DPtr _histMultiEta;
Histo1DPtr _histMultiEtaPrime;
Histo1DPtr _histMultiDPlus;
Histo1DPtr _histMultiD0;
Histo1DPtr _histMultiBPlus0;
Histo1DPtr _histMultiF0;
Histo1DPtr _histMultiRho;
Histo1DPtr _histMultiKStar892Plus;
Histo1DPtr _histMultiKStar892_0;
Histo1DPtr _histMultiPhi;
Histo1DPtr _histMultiDStar2010Plus;
Histo1DPtr _histMultiF2;
Histo1DPtr _histMultiK2Star1430_0;
Histo1DPtr _histMultiP;
Histo1DPtr _histMultiLambda0;
Histo1DPtr _histMultiXiMinus;
Histo1DPtr _histMultiOmegaMinus;
Histo1DPtr _histMultiDeltaPlusPlus;
Histo1DPtr _histMultiSigma1385Plus;
Histo1DPtr _histMultiXi1530_0;
Histo1DPtr _histMultiLambdaB0;
/// @}
};
RIVET_DECLARE_ALIASED_PLUGIN(DELPHI_1996_S3430090, DELPHI_1996_I424112);
}
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