Rivet analyses

CDF Run II inclusive jet cross-section using the Midpoint algorithm

Experiment: CDF (Tevatron Run 2)

Inspire ID: 790693

Status: VALIDATED

Authors: - Craig Group - Frank Siegert

References: - arXiv: 0807.2204 - Phys.Rev.D78:052006,2008

Beams: p- p+

Beam energies: (980.0, 980.0)GeV

Run details: - Requires 2 → 2 QCD scattering processes. The minimum jet E⟂ is 62 GeV, so a cut on kinematic pTmin may be required for good statistics.

Measurement of the inclusive jet cross section in pp̄ collisions at $\sqrt{s}=1.96$ TeV as a function of jet E⟂, for E⟂> 62 GeV. The data is collected by the CDF II detector and has an integrated luminosity of 1.13 fb−1. The measurement was made using the cone-based Midpoint jet clustering algorithm in rapidity bins within |y| < 2.1. This measurement can be used to provide increased precision in PDFs at high parton momentum fraction x.

Source code:CDF_2008_I790693.cc

// -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FastJets.hh"

namespace Rivet {


  /// @brief CDF Run II inclusive jet cross-section using the Midpoint algorithm.
  ///
  /// The analysis includes 1.1fb^-1 of CDF data and is the first with a
  /// cone algorithm to include the forward region of the detector.
  /// arXiv:0807.2204 to be published in PRD
  class CDF_2008_I790693 : public Analysis {
  public:

    RIVET_DEFAULT_ANALYSIS_CTOR(CDF_2008_I790693);


    /// @name Analysis methods
    /// @{

    // Book histos and set counters for number of events passed in each one
    void init() {
      const FinalState fs;
      declare(FastJets(fs, JetAlg::CDFMIDPOINT, 0.7), "JetsM07");

      book(_binnedHistosR07, {0., 0.1, 0.7, 1.1, 1.6, 2.1},
                             {"d01-x01-y01", "d02-x01-y01", "d03-x01-y01", "d04-x01-y01", "d05-x01-y01"});
    }


    // Do the analysis
    void analyze(const Event& event) {
      for (const Jet& jet : apply<FastJets>(event, "JetsM07").jets(Cuts::pT > 62*GeV)) {
        _binnedHistosR07->fill(jet.absrap(), jet.pT()/GeV);
      }
    }


    // Normalise histograms to cross-section
    void finalize() {
      scale(_binnedHistosR07, crossSection()/nanobarn/sumOfWeights()/2.0);
      divByGroupWidth(_binnedHistosR07);
    }

    /// @}


  private:

    /// Histograms in different eta regions
    Histo1DGroupPtr _binnedHistosR07;

  };



  RIVET_DECLARE_ALIASED_PLUGIN(CDF_2008_I790693, CDF_2008_S7828950);

}

Aliases: - CDF_2008_S7828950