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## Rivet analyses reference

### STAR_2006_S6870392

Inclusive jet cross-section in pp at 200 GeV
Experiment: STAR (RHIC pp 200 GeV)
Inspire ID: 723509
Status: VALIDATED
Authors:
• Hendrik Hoeth
References:
• Phys. Rev. Lett. 97, 252001
• hep-ex/0608030
Beams: p+ p+
Beam energies: (100.0, 100.0) GeV
Run details:
• pp at 200 GeV

Inclusive jet cross section as a function of pT in pp collisions at $\sqrt{s} = 200$ GeV, measured by the STAR experiment at RHIC.

Source code: STAR_2006_S6870392.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 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 // -*- C++ -*- #include "Rivet/Analysis.hh" #include "Rivet/Projections/FinalState.hh" #include "Rivet/Projections/FastJets.hh" namespace Rivet { /// @brief STAR inclusive jet cross-section in pp at 200 GeV class STAR_2006_S6870392 : public Analysis { public: /// Constructor STAR_2006_S6870392() : Analysis("STAR_2006_S6870392") { } /// @name Analysis methods //@{ /// Book projections and histograms void init() { FinalState fs(-2.0, 2.0); declare(fs, "FS"); declare(FastJets(fs, FastJets::CDFMIDPOINT, 0.4, JetAlg::ALL_MUONS, JetAlg::NO_INVISIBLES, nullptr, 0.5), "MidpointJets"); _h_jet_pT_MB = bookHisto1D(1, 1, 1); _h_jet_pT_HT = bookHisto1D(2, 1, 1); } /// Do the analysis void analyze(const Event& event) { const double weight = event.weight(); // Skip if the event is empty const FinalState& fs = apply(event, "FS"); if (fs.empty()) { MSG_DEBUG("Skipping event " << numEvents() << " because no final state found "); vetoEvent; } // Find jets const FastJets& jetpro = apply(event, "MidpointJets"); const Jets& jets = jetpro.jetsByPt(); if (!jets.empty()) { const Jet& j1 = jets.front(); if (inRange(fabs(j1.eta()), 0.2, 0.8)) { foreach (const Jet& j, jets) { const FourMomentum pj = j.momentum(); _h_jet_pT_MB->fill(pj.pT(), weight); _h_jet_pT_HT->fill(pj.pT(), weight); } } } } /// Finalize void finalize() { double normalisation = crossSection()/picobarn/sumOfWeights()/(2*0.6*2*M_PI); scale(_h_jet_pT_MB, normalisation); scale(_h_jet_pT_HT, normalisation); } //@} private: /// @name Histograms //@{ Histo1DPtr _h_jet_pT_MB; Histo1DPtr _h_jet_pT_HT; //@} }; // The hook for the plugin system DECLARE_RIVET_PLUGIN(STAR_2006_S6870392); }