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Rivet analyses reference
ATLAS_2013_I1234228
High-mass Drell-Yan at 7 TeV
Experiment: ATLAS (LHC)
Inspire ID: 1234228
Status: VALIDATED
Authors:
References:
Beams: p+ p+
Beam energies: (3500.0, 3500.0) GeV
Run details:
- Drell-Yan production in pp collisons at 7 TeV
This Letter reports a measurement of the high-mass Drell-Yan differential cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. Based on an integrated luminosity of 4.9 fb$^{-1}$, the differential cross-section in the $Z/\gamma^\ast \rightarrow e^+e^-$ channel is measured with the ATLAS detector as a function of the invariant mass, $m_{ee}$, in the range $116< m_{ee} <1500$ GeV, for a fiducial region in which both the electron and the positron have transverse momentum $p_\text{T}>25$ GeV and pseudorapidity $|\eta|<2.5$. A comparison is made to various event generators and to the predictions of perturbative QCD calculations at next-to-next-to-leading order.
Source code:
ATLAS_2013_I1234228.cc
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67 | // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/ZFinder.hh"
namespace Rivet {
/// @brief Add a short analysis description here
class ATLAS_2013_I1234228 : public Analysis {
public:
/// Constructor
DEFAULT_RIVET_ANALYSIS_CTOR(ATLAS_2013_I1234228);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
const FinalState fs;
Cut cuts = Cuts::abseta < 2.5 && Cuts::pT > 25*GeV;
ZFinder zfinder(fs, cuts, PID::ELECTRON, 116*GeV, 1500*GeV, 0.1);
declare(zfinder, "ZFinder");
_hist_mll = bookHisto1D(1, 1, 2);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const double weight = event.weight();
const ZFinder& zfinder = apply<ZFinder>(event, "ZFinder");
if (zfinder.bosons().size() != 1) vetoEvent;
double mass = zfinder.bosons()[0].mass();
_hist_mll->fill(mass, weight);
}
/// Normalise histograms etc., after the run
void finalize() {
const double sf = crossSection()/sumOfWeights();
scale(_hist_mll, sf);
}
//@}
private:
/// @name Histograms
//@{
Histo1DPtr _hist_mll;
//@}
};
// The hook for the plugin system
DECLARE_RIVET_PLUGIN(ATLAS_2013_I1234228);
}
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