Rivet analyses referenceATLAS_2016_CONF_2016_092Inclusive jet cross sections using early 13 TeV dataExperiment: ATLAS (LHC) Status: OBSOLETE Authors:
Beam energies: (6500.0, 6500.0) GeV Run details:
This note presents the measurement of inclusive-jet cross-sections in proton--proton collisions at a centre-of-mass energy of 13TeV. The measurement uses data corresponding to an integrated luminosity of 3.2 fb−1 collected with the ATLAS detector at the Large Hadron Collider in 2015. Jets are clustered using the anti-kt algorithm with a radius parameter value of R=0.4. Double differential inclusive-jet cross-sections are presented as a function of the jet transverse momentum, covering the range from 100 GeV to about 3.2 TeV, and of the absolute jet rapidity, up to |y|=3. The predictions of next-to-leading-order QCD calculations using several parton distribution function (PDF) sets and corrected for non-perturbative and electroweak effects are compared to the measured cross-sections. The predictions are consistent with the measured cross-sections within uncertainties. Source code: ATLAS_2016_CONF_2016_092.cc 1// -*- C++ -*-
2#include "Rivet/Analysis.hh"
3#include "Rivet/Projections/FinalState.hh"
4#include "Rivet/Projections/FastJets.hh"
5
6namespace Rivet {
7
8
9 /// Inclusive jet cross sections using early 13 TeV data
10 /// @author Stefan von Buddenbrock <stef.von.b@cern.ch>
11 class ATLAS_2016_CONF_2016_092 : public Analysis {
12 public:
13
14 /// Constructor
15 RIVET_DEFAULT_ANALYSIS_CTOR(ATLAS_2016_CONF_2016_092);
16
17
18 /// Bookings
19 void init() {
20
21 // Define the jets
22 FastJets antiKT04Jets(FinalState(Cuts::open()), JetAlg::ANTIKT, 0.4);
23 antiKT04Jets.useInvisibles();
24 declare(antiKT04Jets, "antiKT04Jets");
25
26 // Book histograms
27 const vector<double> y_bins{0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0};
28 book(_h_pT, y_bins);
29 for (auto& b : _h_pT->bins()) {
30 book(b, b.index(), 1, 1);
31 }
32 }
33
34
35 /// Per-event analysis
36 void analyze(const Event& event) {
37 const Jets& jets = apply<FastJets>(event, "antiKT04Jets").jetsByPt(Cuts::pT > 100*GeV && Cuts::absrap < 3.0);
38 for (const Jet& j : jets) {
39 _h_pT->fill(j.absrap(), j.pT()/GeV);
40 }
41 }
42
43
44 /// Post-run scaling
45 void finalize() {
46 // Divide by 2 to only get positive rapidity values
47 scale(_h_pT, 0.5*crossSection()/picobarn/sumOfWeights());
48 divByGroupWidth(_h_pT);
49 }
50
51
52 /// Histograms
53 Histo1DGroupPtr _h_pT;
54
55 };
56
57
58 RIVET_DECLARE_PLUGIN(ATLAS_2016_CONF_2016_092);
59
60}
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