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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// @brief pbar and lambdabar at 34 GeV
class JADE_1981_I166363 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(JADE_1981_I166363);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Initialise and register projections
declare(FinalState(), "FS");
declare(UnstableParticles(), "UFS");
// Book histograms
book(_h_pbar , 1, 1, 1);
book(_h_lambdabar, 2, 1, 1);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
// at least 5 charged FS particles
const FinalState& fs = apply<FinalState>(event, "FS");
const size_t numParticles = fs.particles().size();
if (numParticles < 3) {
MSG_DEBUG("Failed leptonic event cut");
vetoEvent;
}
MSG_DEBUG("Passed leptonic event cut");
for (const Particle& p : apply<UnstableParticles>(event, "UFS").particles(Cuts::pid==-2212 or Cuts::pid==-3122)) {
if(p.pid()==-2212)
_h_pbar->fill(p.p3().mod());
else
_h_lambdabar->fill(p.p3().mod());
}
}
/// Normalise histograms etc., after the run
void finalize() {
scale(_h_pbar , crossSection()/nanobarn/sumOfWeights());
scale(_h_lambdabar, crossSection()/nanobarn/sumOfWeights());
}
//@}
/// @name Histograms
//@{
Histo1DPtr _h_pbar, _h_lambdabar;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(JADE_1981_I166363);
}
|