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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/ZFinder.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Projections/HeavyHadrons.hh"
#include "Rivet/Projections/VetoedFinalState.hh"
namespace Rivet {
/// Electroweak Wjj production at 8 TeV
class ATLAS_2014_I1306294 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(ATLAS_2014_I1306294);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Get options from the new option system
_mode = 1;
if ( getOption("LMODE") == "EL" ) _mode = 1;
if ( getOption("LMODE") == "MU" ) _mode = 2;
FinalState fs;
Cut cuts = Cuts::abseta < 2.5 && Cuts::pT > 20*GeV;
ZFinder zfinder(fs, cuts, _mode==1? PID::ELECTRON : PID::MUON, 76.0*GeV, 106.0*GeV, 0.1,
ZFinder::ChargedLeptons::ALL, ZFinder::ClusterPhotons::NODECAY, ZFinder::AddPhotons::NO);
declare(zfinder, "ZFinder");
VetoedFinalState jet_fs(fs);
jet_fs.addVetoOnThisFinalState(getProjection<ZFinder>("ZFinder"));
FastJets jetpro1(jet_fs, FastJets::ANTIKT, 0.4, JetAlg::Muons::ALL, JetAlg::Invisibles::ALL);
declare(jetpro1, "AntiKtJets04");
declare(HeavyHadrons(), "BHadrons");
// Histograms with data binning
book(_h_bjet_Pt , 3, 1, 1);
book(_h_bjet_Y , 5, 1, 1);
book(_h_bjet_Yboost , 7, 1, 1);
book(_h_bjet_DY20 , 9, 1, 1);
book(_h_bjet_ZdPhi20 ,11, 1, 1);
book(_h_bjet_ZdR20 ,13, 1, 1);
book(_h_bjet_ZPt ,15, 1, 1);
book(_h_bjet_ZY ,17, 1, 1);
book(_h_2bjet_dR ,21, 1, 1);
book(_h_2bjet_Mbb ,23, 1, 1);
book(_h_2bjet_ZPt ,25, 1, 1);
book(_h_2bjet_ZY ,27, 1, 1);
}
/// Perform the per-event analysis
void analyze(const Event& e) {
// Check we have a Z:
const ZFinder& zfinder = apply<ZFinder>(e, "ZFinder");
if (zfinder.bosons().size() != 1) vetoEvent;
const Particles boson_s = zfinder.bosons();
const Particle boson_f = boson_s[0];
const Particles zleps = zfinder.constituents();
// Stop processing the event if no true b-partons or hadrons are found
const Particles allBs = apply<HeavyHadrons>(e, "BHadrons").bHadrons(5.0*GeV);
Particles stableBs = filter_select(allBs, Cuts::abseta < 2.5);
if (stableBs.empty()) vetoEvent;
// Get the b-jets
const Jets& jets = apply<JetAlg>(e, "AntiKtJets04").jetsByPt(Cuts::pT >20.0*GeV && Cuts::abseta <2.4);
Jets b_jets;
for (const Jet& jet : jets) {
//veto overlaps with Z leptons:
bool veto = false;
for (const Particle& zlep : zleps) {
if (deltaR(jet, zlep) < 0.5) veto = true;
}
if (veto) continue;
for (const Particle& bhadron : stableBs) {
if (deltaR(jet, bhadron) <= 0.3) {
b_jets.push_back(jet);
break; // match
}
}
}
// Make sure we have at least 1
if (b_jets.empty()) vetoEvent;
// Fill the plots
const double ZpT = boson_f.pT()/GeV;
const double ZY = boson_f.absrap();
_h_bjet_ZPt->fill(ZpT);
_h_bjet_ZY ->fill(ZY);
for (const Jet& jet : b_jets) {
_h_bjet_Pt->fill(jet.pT()/GeV);
_h_bjet_Y ->fill(jet.absrap());
const double Yboost = 0.5 * fabs(boson_f.rapidity() + jet.rapidity());
_h_bjet_Yboost->fill(Yboost);
if(ZpT > 20.) {
const double ZBDY = fabs( boson_f.rapidity() - jet.rapidity() );
const double ZBDPHI = fabs( deltaPhi(jet.phi(), boson_f.phi()) );
const double ZBDR = deltaR(jet, boson_f, RAPIDITY);
_h_bjet_DY20->fill( ZBDY);
_h_bjet_ZdPhi20->fill(ZBDPHI);
_h_bjet_ZdR20->fill( ZBDR);
}
} //loop over b-jets
if (b_jets.size() < 2) return;
_h_2bjet_ZPt->fill(ZpT);
_h_2bjet_ZY ->fill(ZY);
const double BBDR = deltaR(b_jets[0], b_jets[1], RAPIDITY);
const double Mbb = (b_jets[0].momentum() + b_jets[1].momentum()).mass();
_h_2bjet_dR ->fill(BBDR);
_h_2bjet_Mbb->fill(Mbb);
} // end of analysis loop
/// Normalise histograms etc., after the run
void finalize() {
const double normfac = crossSection() / sumOfWeights();
scale( _h_bjet_Pt, normfac);
scale( _h_bjet_Y, normfac);
scale( _h_bjet_Yboost, normfac);
scale( _h_bjet_DY20, normfac);
scale( _h_bjet_ZdPhi20, normfac);
scale( _h_bjet_ZdR20, normfac);
scale( _h_bjet_ZPt, normfac);
scale( _h_bjet_ZY, normfac);
scale( _h_2bjet_dR, normfac);
scale( _h_2bjet_Mbb, normfac);
scale( _h_2bjet_ZPt, normfac);
scale( _h_2bjet_ZY, normfac);
}
//@}
protected:
// Data members like post-cuts event weight counters go here
size_t _mode;
private:
Histo1DPtr _h_bjet_Pt;
Histo1DPtr _h_bjet_Y;
Histo1DPtr _h_bjet_Yboost;
Histo1DPtr _h_bjet_DY20;
Histo1DPtr _h_bjet_ZdPhi20;
Histo1DPtr _h_bjet_ZdR20;
Histo1DPtr _h_bjet_ZPt;
Histo1DPtr _h_bjet_ZY;
Histo1DPtr _h_2bjet_dR;
Histo1DPtr _h_2bjet_Mbb;
Histo1DPtr _h_2bjet_ZPt;
Histo1DPtr _h_2bjet_ZY;
};
RIVET_DECLARE_PLUGIN(ATLAS_2014_I1306294);
}
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