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CDF_2001_S4517016.cc
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CDF_2001_S4517016.cc
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// -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/RivetAIDA.hh"
#include "Rivet/Tools/Logging.hh"
#include "Rivet/Tools/BinnedHistogram.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/FastJets.hh"
namespace Rivet {
/// @brief CDF two jet tripply-differential cross-section
class CDF_2001_S4517016 : public Analysis {
public:
/// @name Constructors etc.
//@{
/// Constructor
CDF_2001_S4517016()
: Analysis("CDF_2001_S4517016")
{
setBeams(PROTON, ANTIPROTON);
setNeedsCrossSection(true);
}
//@}
public:
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
FinalState fs(-4.2, 4.2);
addProjection(FastJets(fs, FastJets::CDFJETCLU, 0.7), "Jets");
_h_ET.addHistogram(0.1, 0.7, bookHistogram1D(1, 1, 1));
_h_ET.addHistogram(0.7, 1.4, bookHistogram1D(2, 1, 1));
_h_ET.addHistogram(1.4, 2.1, bookHistogram1D(3, 1, 1));
_h_ET.addHistogram(2.1, 3.0, bookHistogram1D(4, 1, 1));
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const double weight = event.weight();
Jets jets = applyProjection<FastJets>(event, "Jets").jetsByEt(10.0*GeV);
if (jets.size()<2) {
vetoEvent;
}
FourMomentum jet1 = jets[0].momentum();
FourMomentum jet2 = jets[1].momentum();
double eta1 = fabs(jet1.eta());
double eta2 = fabs(jet2.eta());
double ET1 = jet1.Et();
double ET2 = jet2.Et();
if (eta1<0.1 || eta1>0.7 || ET1<40.0*GeV) {
vetoEvent;
}
if (eta2<0.1 || eta2>3.0) {
vetoEvent;
}
_h_ET.fill(eta2, ET1, weight);
if (eta2<0.7 && ET2>40.0*GeV) _h_ET.fill(eta1, ET2, weight);
}
/// Normalise histograms etc., after the run
void finalize() {
double deta1 = 1.2;
_h_ET.scale(crossSection()/nanobarn/sumOfWeights()/deta1 / 2.0, this);
}
//@}
private:
/// @name Histograms
//@{
BinnedHistogram<double> _h_ET;
//@}
};
// This global object acts as a hook for the plugin system
AnalysisBuilder<CDF_2001_S4517016> plugin_CDF_2001_S4517016;
}

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