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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:
• Christian Gutschow
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
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 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(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); }