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## Rivet analyses reference

### CMS_2017_I1519995

Search for new physics with dijet angular distributions in proton-proton collisions at $\sqrt{s} = 13 \text{TeV}$
Experiment: CMS (CERN LHC)
Inspire ID: 1519995
Status: VALIDATED
Authors:
• Andreas Hinzmann
References:
Beams: p+ p+
Beam energies: (6500.0, 6500.0) GeV
Run details:
• Hard QCD process with a pT cut of 200 GeV on sub-leading jet is recommended.

Dijet angular distributions are measured in proton-proton collisions at $\sqrt{s}=13 \text{TeV}$, using a data set corresponding to an integrated luminosity of 2.6/fb collected by the CMS detector at the CERN LHC. Dijet angular distributions are found to be in agreement with the perturbative QCD predictions that include electroweak corrections.

Source code: CMS_2017_I1519995.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 // -*- C++ -*- #include "Rivet/Analysis.hh" #include "Rivet/Projections/FastJets.hh" #include "Rivet/Tools/BinnedHistogram.hh" namespace Rivet { /// Search for new physics with dijet angular distributions at 13 TeV class CMS_2017_I1519995 : public Analysis { public: DEFAULT_RIVET_ANALYSIS_CTOR(CMS_2017_I1519995); /// Book projections and histograms void init() { FastJets antikt(FinalState(), FastJets::ANTIKT, 0.4); declare(antikt, "ANTIKT"); /// @todo We need a better way!! {Histo1DPtr tmp; _h_chi_dijet.add(4800., 8000., book(tmp, 1, 1, 1));} {Histo1DPtr tmp; _h_chi_dijet.add(4200., 4800., book(tmp, 2, 1, 1));} {Histo1DPtr tmp; _h_chi_dijet.add(3600., 4200., book(tmp, 3, 1, 1));} {Histo1DPtr tmp; _h_chi_dijet.add(3000., 3600., book(tmp, 4, 1, 1));} {Histo1DPtr tmp; _h_chi_dijet.add(2400., 3000., book(tmp, 5, 1, 1));} {Histo1DPtr tmp; _h_chi_dijet.add(1900., 2400., book(tmp, 6, 1, 1));} } /// Per-event analysis void analyze(const Event& event) { const Jets& jets = apply(event, "ANTIKT").jetsByPt(); if (jets.size() < 2) vetoEvent; const FourMomentum j0(jets[0].mom()), j1(jets[1].mom()); if (fabs(j0.rap()+j1.rap())/2 > 1.11) vetoEvent; const double mjj = (j0+j1).mass(); const double chi = exp(fabs(j0.rap()-j1.rap())); if (chi < 16) _h_chi_dijet.fill(mjj/GeV, chi, 1.0); } /// Normalize histograms void finalize() { for (Histo1DPtr hist : _h_chi_dijet.histos()) normalize(hist); } BinnedHistogram _h_chi_dijet; }; // The hook for the plugin system DECLARE_RIVET_PLUGIN(CMS_2017_I1519995); }