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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Projections/PromptFinalState.hh"
#include "Rivet/Projections/ChargedFinalState.hh"
#include "Rivet/Projections/InvMassFinalState.hh"
#include "Rivet/Projections/VisibleFinalState.hh"
#include "Rivet/Projections/VetoedFinalState.hh"
#include "Rivet/Projections/ZFinder.hh"
namespace Rivet {
class CMS_2015_I1310737 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(CMS_2015_I1310737);
/// Book histograms and initialise projections before the run
void init() {
FinalState fs; ///< @todo No cuts?
VisibleFinalState visfs(fs);
// Prompt leptons only
PromptFinalState pfs(fs);
ZFinder zeeFinder(pfs, Cuts::abseta < 2.4 && Cuts::pT > 20*GeV, PID::ELECTRON, 71.0*GeV, 111.0*GeV);
declare(zeeFinder, "ZeeFinder");
ZFinder zmumuFinder(pfs, Cuts::abseta < 2.4 && Cuts::pT > 20*GeV, PID::MUON, 71.0*GeV, 111.0*GeV);
declare(zmumuFinder, "ZmumuFinder");
VetoedFinalState jetConstits(visfs);
jetConstits.addVetoOnThisFinalState(zeeFinder);
jetConstits.addVetoOnThisFinalState(zmumuFinder);
FastJets akt05Jets(jetConstits, FastJets::ANTIKT, 0.5);
declare(akt05Jets, "AntiKt05Jets");
book(_h_excmult_jets_tot ,1, 1, 1);
book(_h_incmult_jets_tot ,2, 1, 1);
book(_h_leading_jet_pt_tot ,3, 1, 1);
book(_h_second_jet_pt_tot ,4, 1, 1);
book(_h_third_jet_pt_tot ,5, 1, 1);
book(_h_fourth_jet_pt_tot ,6, 1, 1);
book(_h_leading_jet_eta_tot ,7, 1, 1);
book(_h_second_jet_eta_tot ,8, 1, 1);
book(_h_third_jet_eta_tot ,9, 1, 1);
book(_h_fourth_jet_eta_tot ,10, 1, 1);
book(_h_ht1_tot ,11, 1, 1);
book(_h_ht2_tot ,12, 1, 1);
book(_h_ht3_tot ,13, 1, 1);
book(_h_ht4_tot ,14, 1, 1);
}
/// Perform the per-event analysis
void analyze(const Event& event) {;
const ZFinder& zeeFS = apply<ZFinder>(event, "ZeeFinder");
const ZFinder& zmumuFS = apply<ZFinder>(event, "ZmumuFinder");
const Particles& zees = zeeFS.bosons();
const Particles& zmumus = zmumuFS.bosons();
// We did not find exactly one Z. No good.
if (zees.size() + zmumus.size() != 1) {
MSG_DEBUG("Did not find exactly one good Z candidate");
vetoEvent;
}
// Find the (dressed!) leptons
const Particles& dressedLeptons = zees.size() ? zeeFS.constituents() : zmumuFS.constituents();
// Cluster jets
// NB. Veto has already been applied on leptons and photons used for dressing
const FastJets& fj = apply<FastJets>(event, "AntiKt05Jets");
const Jets& jets = fj.jetsByPt(Cuts::abseta < 2.4 && Cuts::pT > 30*GeV);
// Perform lepton-jet overlap and HT calculation
double ht = 0;
Jets goodjets;
for (const Jet& j : jets) {
// Decide if this jet is "good", i.e. isolated from the leptons
/// @todo Nice use-case for any() and a C++11 lambda
bool overlap = false;
for (const Particle& l : dressedLeptons) {
if (deltaR(j, l) < 0.5) {
overlap = true;
break;
}
}
// Fill HT and good-jets collection
if (overlap) continue;
goodjets.push_back(j);
ht += j.pT();
}
// We don't care about events with no isolated jets
if (goodjets.empty()) {
MSG_DEBUG("No jets in event");
vetoEvent;
}
/////////////////
// Weight to be used for histo filling
const double w = 0.5 * 1.0;
// Fill jet number integral histograms
_h_excmult_jets_tot->fill(goodjets.size(), w);
/// @todo Could be better computed by toIntegral transform on exclusive histo
for (size_t iJet = 1; iJet <= goodjets.size(); iJet++ )
_h_incmult_jets_tot->fill(iJet, w);
// Fill leading jet histograms
const Jet& j1 = goodjets[0];
_h_leading_jet_pt_tot->fill(j1.pT()/GeV, w);
_h_leading_jet_eta_tot->fill(j1.abseta(), w);
_h_ht1_tot->fill(ht/GeV, w);
// Fill 2nd jet histograms
if (goodjets.size() < 2) return;
const Jet& j2 = goodjets[1];
_h_second_jet_pt_tot->fill(j2.pT()/GeV, w);
_h_second_jet_eta_tot->fill(j2.abseta(), w);
_h_ht2_tot->fill(ht/GeV, w);
// Fill 3rd jet histograms
if (goodjets.size() < 3) return;
const Jet& j3 = goodjets[2];
_h_third_jet_pt_tot->fill(j3.pT()/GeV, w);
_h_third_jet_eta_tot->fill(j3.abseta(), w);
_h_ht3_tot->fill(ht/GeV, w);
// Fill 4th jet histograms
if (goodjets.size() < 4) return;
const Jet& j4 = goodjets[3];
_h_fourth_jet_pt_tot->fill(j4.pT()/GeV, w);
_h_fourth_jet_eta_tot->fill(j4.abseta(), w);
_h_ht4_tot->fill(ht/GeV, w);
}
/// Normalise histograms etc., after the run
void finalize() {
const double norm = (sumOfWeights() != 0) ? crossSection()/sumOfWeights() : 1.0;
scale(_h_excmult_jets_tot, norm );
scale(_h_incmult_jets_tot, norm );
scale(_h_leading_jet_pt_tot, norm );
scale(_h_second_jet_pt_tot, norm );
scale(_h_third_jet_pt_tot, norm );
scale(_h_fourth_jet_pt_tot, norm );
scale(_h_leading_jet_eta_tot, norm );
scale(_h_second_jet_eta_tot, norm );
scale(_h_third_jet_eta_tot, norm );
scale(_h_fourth_jet_eta_tot, norm );
scale(_h_ht1_tot, norm );
scale(_h_ht2_tot, norm );
scale(_h_ht3_tot, norm );
scale(_h_ht4_tot, norm );
}
private:
/// @name Histograms
Histo1DPtr _h_excmult_jets_tot, _h_incmult_jets_tot;
Histo1DPtr _h_leading_jet_pt_tot, _h_second_jet_pt_tot, _h_third_jet_pt_tot, _h_fourth_jet_pt_tot;
Histo1DPtr _h_leading_jet_eta_tot, _h_second_jet_eta_tot, _h_third_jet_eta_tot, _h_fourth_jet_eta_tot;
Histo1DPtr _h_ht1_tot, _h_ht2_tot, _h_ht3_tot, _h_ht4_tot;
};
RIVET_DECLARE_PLUGIN(CMS_2015_I1310737);
}
|