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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/ChargedFinalState.hh"
#include "Rivet/Projections/IdentifiedFinalState.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// STAR strange particle spectra in pp at 200 GeV
class STAR_2006_S6860818 : public Analysis {
public:
RIVET_DEFAULT_ANALYSIS_CTOR(STAR_2006_S6860818);
/// Book projections and histograms
void init() {
ChargedFinalState bbc1(Cuts::etaIn(-5.0, -3.5)); // beam-beam-counter trigger
ChargedFinalState bbc2(Cuts::etaIn( 3.5, 5.0)); // beam-beam-counter trigger
declare(bbc1, "BBC1");
declare(bbc2, "BBC2");
UnstableParticles ufs(Cuts::abseta < 2.5);
declare(ufs, "UFS");
book(_h_pT_k0s ,1, 1, 1);
book(_h_pT_kminus ,1, 2, 1);
book(_h_pT_kplus ,1, 3, 1);
book(_h_pT_lambda ,1, 4, 1);
book(_h_pT_lambdabar ,1, 5, 1);
book(_h_pT_ximinus ,1, 6, 1);
book(_h_pT_xiplus ,1, 7, 1);
//book(_h_pT_omega ,1, 8, 1);
book(_h_antibaryon_baryon_ratio, 2, 1, 1);
book(_h_lambar_lam, 2, 2, 1);
book(_h_xiplus_ximinus, 2, 3, 1);
book(_h_pT_vs_mass ,3, 1, 1);
for (size_t i = 0; i < 4; i++) {
book(_nWeightedBaryon[i], "TMP/nWeightedBaryon"+to_str(i));
book(_nWeightedAntiBaryon[i], "TMP/nWeightedAntiBaryon"+to_str(i));
}
book(_sumWeightSelected, "sumWselected");
}
/// Do the analysis
void analyze(const Event& event) {
const ChargedFinalState& bbc1 = apply<ChargedFinalState>(event, "BBC1");
const ChargedFinalState& bbc2 = apply<ChargedFinalState>(event, "BBC2");
if (bbc1.size() < 1 || bbc2.size() < 1) {
MSG_DEBUG("Failed beam-beam-counter trigger");
vetoEvent;
}
_sumWeightSelected->fill();
const UnstableParticles& ufs = apply<UnstableParticles>(event, "UFS");
for (const Particle& p : ufs.particles()) {
if (p.absrap() < 0.5) {
const PdgId pid = p.pid();
const double pT = p.pT() / GeV;
switch (abs(pid)) {
case PID::PIPLUS:
if (pid < 0) _h_pT_vs_mass->fill(0.1396, pT);
break;
case PID::PROTON:
if (pid < 0) _h_pT_vs_mass->fill(0.9383, pT);
if (pT > 0.4) {
pid > 0 ? _nWeightedBaryon[0]->fill() : _nWeightedAntiBaryon[0]->fill();
}
break;
case PID::K0S:
if (pT > 0.2) {
_h_pT_k0s->fill(pT, 1.0/pT);
}
_h_pT_vs_mass->fill(0.5056, pT);
break;
case PID::K0L:
_h_pT_vs_mass->fill(0.5056, pT);
break;
case 113: // rho0(770)
_h_pT_vs_mass->fill(0.7755, pT);
break;
case 313: // K0*(892)
_h_pT_vs_mass->fill(0.8960, pT);
break;
case 333: // phi(1020)
_h_pT_vs_mass->fill(1.0190, pT);
break;
case 3214: // Sigma(1385)
_h_pT_vs_mass->fill(1.3840, pT);
break;
case 3124: // Lambda(1520)
_h_pT_vs_mass->fill(1.5200, pT);
break;
case PID::KPLUS:
if (pid < 0) _h_pT_vs_mass->fill(0.4856, pT);
if (pT > 0.2) {
pid > 0 ? _h_pT_kplus->fill(pT, 1.0/pT) : _h_pT_kminus->fill(pT, 1.0/pT);
}
break;
case PID::LAMBDA:
pid > 0 ? _h_pT_vs_mass->fill(1.1050, pT) : _h_pT_vs_mass->fill(1.1250, pT);
if (pT > 0.3) {
pid > 0 ? _h_pT_lambda->fill(pT, 1.0/pT) : _h_pT_lambdabar->fill(pT, 1.0/pT);
pid > 0 ? _nWeightedBaryon[1]->fill() : _nWeightedAntiBaryon[1]->fill();
}
break;
case PID::XIMINUS:
pid > 0 ? _h_pT_vs_mass->fill(1.3120, pT) : _h_pT_vs_mass->fill(1.3320, pT);
if (pT > 0.5) {
pid > 0 ? _h_pT_ximinus->fill(pT, 1.0/pT) : _h_pT_xiplus->fill(pT, 1.0/pT);
pid > 0 ? _nWeightedBaryon[2]->fill() : _nWeightedAntiBaryon[2]->fill();
}
break;
case PID::OMEGAMINUS:
_h_pT_vs_mass->fill(1.6720, pT);
if (pT > 0.5) {
//_h_pT_omega->fill(pT, 1.0/pT);
pid > 0 ? _nWeightedBaryon[3]->fill() : _nWeightedAntiBaryon[3]->fill();
}
break;
}
}
}
}
/// Finalize
void finalize() {
std::vector<Point2D> points;
for (size_t i=0 ; i<4 ; i++) {
if (_nWeightedBaryon[i]->val()==0 || _nWeightedAntiBaryon[i]->val()==0) {
points.push_back(Point2D(i,0,0.5,0));
} else {
double y = safediv(_nWeightedAntiBaryon[i]->val(), _nWeightedBaryon[i]->val(), 0.);
double dy = sqrt( safediv(1., _nWeightedAntiBaryon[i]->numEntries(), 0.) + safediv(1., _nWeightedBaryon[i]->numEntries(), 0.) );
points.push_back(Point2D(i,y,0.5,y*dy));
}
}
_h_antibaryon_baryon_ratio->addPoints( points );
divide(_h_pT_lambdabar,_h_pT_lambda, _h_lambar_lam);
divide(_h_pT_xiplus,_h_pT_ximinus, _h_xiplus_ximinus);
const YODA::Scatter1D factor = (1./(2.0 * M_PI)) / *_sumWeightSelected;
scale(_h_pT_k0s, factor);
scale(_h_pT_kminus, factor);
scale(_h_pT_kplus, factor);
scale(_h_pT_lambda, factor);
scale(_h_pT_lambdabar, factor);
scale(_h_pT_ximinus, factor);
scale(_h_pT_xiplus, factor);
//scale(_h_pT_omega, 1./(2*M_PI*_sumWeightSelected));
MSG_DEBUG("sumOfWeights() = " << sumOfWeights());
MSG_DEBUG("_sumWeightSelected = " << _sumWeightSelected->val());
}
private:
CounterPtr _sumWeightSelected;
array<CounterPtr, 4> _nWeightedBaryon;
array<CounterPtr, 4> _nWeightedAntiBaryon;
Histo1DPtr _h_pT_k0s, _h_pT_kminus, _h_pT_kplus, _h_pT_lambda, _h_pT_lambdabar, _h_pT_ximinus, _h_pT_xiplus;
//Histo1DPtr _h_pT_omega;
Scatter2DPtr _h_antibaryon_baryon_ratio;
Profile1DPtr _h_pT_vs_mass;
Scatter2DPtr _h_lambar_lam;
Scatter2DPtr _h_xiplus_ximinus;
};
RIVET_DECLARE_ALIASED_PLUGIN(STAR_2006_S6860818, STAR_2006_I722757);
}
|