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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/ZFinder.hh"
namespace Rivet {
/// @ CDF Run II Z \f$ p_\perp \f$ in Drell-Yan events
/// @author Simone Amoroso
class CDF_2012_I1124333 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(CDF_2012_I1124333);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
/// Initialise and register projections here
ZFinder zfinder(FinalState(), Cuts::open(), PID::ELECTRON, 66*GeV, 116*GeV, 0.0, ZFinder::ClusterPhotons::NONE);
declare(zfinder, "ZFinder");
/// Book histograms here, e.g.:
//book( _hist_z_xs ,1, 1, 1);
book(_hist_zpt, 2, 1, 1);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
/// @todo Do the event by event analysis here
const ZFinder& zfinder = apply<ZFinder>(event, "ZFinder");
if (zfinder.bosons().size() != 1) {
MSG_DEBUG("Num e+ e- pairs found = " << zfinder.bosons().size());
vetoEvent;
}
const FourMomentum& pZ = zfinder.bosons()[0].momentum();
if (pZ.mass2() < 0) {
MSG_DEBUG("Negative Z mass**2 = " << pZ.mass2()/GeV2 << "!");
vetoEvent;
}
MSG_DEBUG("Dilepton mass = " << pZ.mass()/GeV << " GeV");
_hist_zpt->fill(pZ.pT());
// _hist_z_xs->fill(1);
}
/// Normalise histograms etc., after the run
void finalize() {
scale(_hist_zpt, crossSection()/picobarn/sumOfWeights());
}
//@}
private:
/// @name Histograms
//@{
Histo1DPtr _hist_zpt;
// Histo1DPtr _hist_z_xs;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(CDF_2012_I1124333);
}
|