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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// @brief Xi- production at 29 GeV
class MARKII_1987_I234976 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(MARKII_1987_I234976);
/// @name Analysis methods
///@{
/// Book histograms and initialise projections before the run
void init() {
// Initialise and register projections
declare(UnstableParticles(), "UFS");
//Histograms
book(_h_spect,1,1,1);
book(_h_sigma,2,1,1);
book(_h_rate ,2,1,2);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const UnstableParticles& ufs = apply<UnstableParticles>(event, "UFS");
for (const Particle& p : ufs.particles(Cuts::abspid==3312)) {
const double xp = 2.*p.E()/sqrtS();
const double beta = p.p3().mod() / p.E();
_h_spect->fill(xp,1./beta);
_h_sigma->fill(sqrtS());
_h_rate->fill(sqrtS());
}
}
/// Normalise histograms etc., after the run
void finalize() {
scale(_h_spect, sqr(sqrtS())*crossSection()/nanobarn/sumOfWeights());
scale(_h_sigma, crossSection()/picobarn/sumOfWeights());
scale(_h_rate , 1./sumOfWeights());
}
///@}
/// @name Histograms
///@{
Histo1DPtr _h_spect,_h_sigma,_h_rate;
///@}
};
RIVET_DECLARE_PLUGIN(MARKII_1987_I234976);
}
|