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// -*- C++ -*-
#include "Rivet/Analyses/MC_JetAnalysis.hh"
#include "Rivet/Projections/WFinder.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Projections/VetoedFinalState.hh"
#include "Rivet/Tools/Logging.hh"
#include "Rivet/Tools/ParticleIdUtils.hh"
#include "Rivet/RivetAIDA.hh"
namespace Rivet {
/// @brief MC validation analysis for W^+[enu]W^-[munu] + jets events
class MC_WWJETS : public MC_JetAnalysis {
public:
/// Default constructor
MC_WWJETS()
: MC_JetAnalysis("MC_WWJETS", 4, "Jets")
{ }
/// @name Analysis methods
//@{
/// Book histograms
void init() {
FinalState fs;
WFinder wenufinder(fs, -3.5, 3.5, 25.0*GeV, ELECTRON, 60.0*GeV, 100.0*GeV, 25.0*GeV, 0.2);
addProjection(wenufinder, "WenuFinder");
VetoedFinalState wmnuinput;
wmnuinput.addVetoOnThisFinalState(wenufinder);
WFinder wmnufinder(wmnuinput, -3.5, 3.5, 25.0*GeV, MUON, 60.0*GeV, 100.0*GeV, 25.0*GeV, 0.2);
addProjection(wmnufinder, "WmnuFinder");
VetoedFinalState jetinput;
jetinput
.addVetoOnThisFinalState(wenufinder)
.addVetoOnThisFinalState(wmnufinder);
FastJets jetpro(jetinput, FastJets::ANTIKT, 0.4);
addProjection(jetpro, "Jets");
// correlations with jets
_h_WW_jet1_deta = bookHistogram1D("WW_jet1_deta", 70, -7.0, 7.0);
_h_WW_jet1_dR = bookHistogram1D("WW_jet1_dR", 25, 1.5, 7.0);
_h_We_jet1_dR = bookHistogram1D("We_jet1_dR", 25, 0.0, 7.0);
// global stuff
_h_HT = bookHistogram1D("HT", logBinEdges(100, 100.0, 0.5*sqrtS()));
_h_jets_m_12 = bookHistogram1D("jets_m_12", logBinEdges(100, 1.0, 0.25*sqrtS()));
MC_JetAnalysis::init();
}
/// Do the analysis
void analyze(const Event & e) {
const double weight = e.weight();
const WFinder& wenufinder = applyProjection<WFinder>(e, "WenuFinder");
if (wenufinder.bosons().size()!=1) {
vetoEvent;
}
const WFinder& wmnufinder = applyProjection<WFinder>(e, "WmnuFinder");
if (wmnufinder.bosons().size()!=1) {
vetoEvent;
}
FourMomentum wenu(wenufinder.bosons()[0].momentum());
FourMomentum wmnu(wmnufinder.bosons()[0].momentum());
FourMomentum ww(wenu+wmnu);
// find leptons
FourMomentum ep=wenufinder.constituentLeptons()[0].momentum();
FourMomentum enu=wenufinder.constituentNeutrinos()[0].momentum();
FourMomentum mm=wmnufinder.constituentLeptons()[0].momentum();
FourMomentum mnu=wmnufinder.constituentNeutrinos()[0].momentum();
const Jets& jets = applyProjection<FastJets>(e, "Jets").jetsByPt(m_jetptcut);
if (jets.size() > 0) {
_h_WW_jet1_deta->fill(ww.eta()-jets[0].momentum().eta(), weight);
_h_WW_jet1_dR->fill(deltaR(ww, jets[0].momentum()), weight);
_h_We_jet1_dR->fill(deltaR(ep, jets[0].momentum()), weight);
}
double HT=ep.pT()+mm.pT()+FourMomentum(enu+mnu).pT();
foreach (const Jet& jet, jets) {
HT+=jet.momentum().pT();
}
if (HT>0.0) _h_HT->fill(HT, weight);
if (jets.size()>1) {
FourMomentum jet1(jets[0].momentum());
FourMomentum jet2(jets[1].momentum());
_h_jets_m_12->fill(FourMomentum(jet1+jet2).mass(), weight);
}
MC_JetAnalysis::analyze(e);
}
/// Finalize
void finalize() {
double norm=crossSection()/sumOfWeights();
scale(_h_WW_jet1_deta, norm);
scale(_h_WW_jet1_dR, norm);
scale(_h_We_jet1_dR, norm);
scale(_h_jets_m_12, norm);
scale(_h_HT, norm);
MC_JetAnalysis::finalize();
}
//@}
private:
/// @name Histograms
//@{
AIDA::IHistogram1D * _h_WW_jet1_deta;
AIDA::IHistogram1D * _h_WW_jet1_dR;
AIDA::IHistogram1D * _h_We_jet1_dR;
AIDA::IHistogram1D * _h_jets_m_12;
AIDA::IHistogram1D * _h_HT;
//@}
};
// The hook for the plugin system
DECLARE_RIVET_PLUGIN(MC_WWJETS);
}
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