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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/ChargedFinalState.hh"
namespace Rivet {
/// @brief OPAL LEP1 charged multiplicity, code basically a copy of the ALEPH one
/// @author Peter Richardson
class OPAL_1992_I321190 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(OPAL_1992_I321190);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
const ChargedFinalState cfs;
declare(cfs, "CFS");
book(_histChTot, 1, 1, 1);
book(_histAver , 5, 1, 1);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const FinalState& cfs = apply<FinalState>(event, "CFS");
MSG_DEBUG("Total charged multiplicity = " << cfs.size());
_histChTot->fill(cfs.size(), 1.0);
_histAver->fill(sqrtS(),cfs.size(),1.0);
}
/// Normalise histograms etc., after the run
void finalize() {
scale(_histChTot, 200.0/sumOfWeights()); // bin width (2) and %age (100)
}
//@}
private:
/// @name Histograms
//@{
Histo1DPtr _histChTot;
Profile1DPtr _histAver;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(OPAL_1992_I321190);
}
|