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Rivet analyses reference
MC_ZZKTSPLITTINGS
Monte Carlo validation observables for $Z[e^+ \, e^-]Z[\mu^+ \, \mu^-]$ + jets production
Experiment: ()
Status: VALIDATED
Authors:
No references listed
Beams: * *
Beam energies: ANY
Run details:
- $ZZ$ + jets analysis. Needs mass cut on lepton pairs to avoid photon singularity, e.g. a min range of $66 < m_{ee} < 116$ GeV
Monte Carlo validation observables for $Z[e^+ \, e^-]Z[\mu^+ \, \mu^-]$ + jets production
Source code:
MC_ZZKTSPLITTINGS.cc
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88 | // -*- C++ -*-
#include "Rivet/Analyses/MC_JetSplittings.hh"
#include "Rivet/Projections/ZFinder.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Projections/VetoedFinalState.hh"
namespace Rivet {
/// @brief MC validation analysis for Z[ee]Z[mumu] + jets events
class MC_ZZKTSPLITTINGS : public MC_JetSplittings {
public:
/// Default constructor
MC_ZZKTSPLITTINGS()
: MC_JetSplittings("MC_ZZKTSPLITTINGS", 4, "Jets")
{ }
/// @name Analysis methods
//@{
/// Book histograms
void init() {
// set FS cuts from input options
const double etaecut = getOption<double>("ABSETAEMAX", 3.5);
const double ptecut = getOption<double>("PTEMIN", 25.);
Cut cute = Cuts::abseta < etaecut && Cuts::pT > ptecut*GeV;
ZFinder zeefinder(FinalState(), cute, PID::ELECTRON, 65*GeV, 115*GeV,
0.2, ZFinder::ClusterPhotons::NODECAY, ZFinder::AddPhotons::YES);
declare(zeefinder, "ZeeFinder");
VetoedFinalState zmminput;
zmminput.addVetoOnThisFinalState(zeefinder);
// set FS cuts from input options
const double etamucut = getOption<double>("ABSETAMUMAX", 3.5);
const double ptmucut = getOption<double>("PTMUMIN", 25.);
Cut cutmu = Cuts::abseta < etamucut && Cuts::pT > ptmucut*GeV;
ZFinder zmmfinder(zmminput, cutmu, PID::MUON, 65*GeV, 115*GeV,
0.2, ZFinder::ClusterPhotons::NODECAY, ZFinder::AddPhotons::YES);
declare(zmmfinder, "ZmmFinder");
VetoedFinalState jetinput;
jetinput
.addVetoOnThisFinalState(zeefinder)
.addVetoOnThisFinalState(zmmfinder);
// set clustering radius from input option
const double R = getOption<double>("R", 0.6);
FastJets jetpro(jetinput, FastJets::KT, R);
declare(jetpro, "Jets");
MC_JetSplittings::init();
}
/// Do the analysis
void analyze(const Event & e) {
const ZFinder& zeefinder = apply<ZFinder>(e, "ZeeFinder");
if (zeefinder.bosons().size() != 1) vetoEvent;
const ZFinder& zmmfinder = apply<ZFinder>(e, "ZmmFinder");
if (zmmfinder.bosons().size() != 1) vetoEvent;
MC_JetSplittings::analyze(e);
}
/// Finalize
void finalize() {
MC_JetSplittings::finalize();
}
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(MC_ZZKTSPLITTINGS);
}
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