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| // -*- C++ -*-
#include "Rivet/Analyses/MC_JetAnalysis.hh"
#include "Rivet/Projections/WFinder.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Analysis.hh"
namespace Rivet {
/// @brief MC validation analysis for W + jets events
class MC_WJETS : public MC_JetAnalysis {
public:
/// Default constructor
MC_WJETS(string name="MC_WJETS")
: MC_JetAnalysis(name, 4, "Jets")
{ }
/// @name Analysis methods
//@{
/// Book histograms
void init() {
_dR=0.2;
if (getOption("SCHEME") == "BARE") _dR = 0.0;
_lepton=PID::ELECTRON;
if (getOption("LMODE") == "MU") _lepton = PID::MUON;
FinalState fs;
WFinder wfinder(fs, Cuts::abseta < 3.5 && Cuts::pT > 25*GeV, _lepton, 60.0*GeV, 100.0*GeV, 25.0*GeV, _dR);
declare(wfinder, "WFinder");
FastJets jetpro(wfinder.remainingFinalState(), FastJets::ANTIKT, 0.4);
declare(jetpro, "Jets");
book(_h_W_jet1_deta ,"W_jet1_deta", 50, -5.0, 5.0);
book(_h_W_jet1_dR ,"W_jet1_dR", 25, 0.5, 7.0);
MC_JetAnalysis::init();
}
/// Do the analysis
void analyze(const Event & e) {
const WFinder& wfinder = apply<WFinder>(e, "WFinder");
if (wfinder.bosons().size() != 1) {
vetoEvent;
}
FourMomentum wmom(wfinder.bosons().front().momentum());
const Jets& jets = apply<FastJets>(e, "Jets").jetsByPt(_jetptcut);
if (jets.size() > 0) {
_h_W_jet1_deta->fill(wmom.eta()-jets[0].eta());
_h_W_jet1_dR->fill(deltaR(wmom, jets[0].momentum()));
}
MC_JetAnalysis::analyze(e);
}
/// Finalize
void finalize() {
scale(_h_W_jet1_deta, crossSection()/picobarn/sumOfWeights());
scale(_h_W_jet1_dR, crossSection()/picobarn/sumOfWeights());
MC_JetAnalysis::finalize();
}
//@}
protected:
/// @name Parameters for specialised e/mu and dressed/bare subclassing
//@{
double _dR;
PdgId _lepton;
//@}
private:
/// @name Histograms
//@{
Histo1DPtr _h_W_jet1_deta;
Histo1DPtr _h_W_jet1_dR;
//@}
};
// The hooks for the plugin system
RIVET_DECLARE_PLUGIN(MC_WJETS);
}
|