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CDF_2008_S7828950

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: Beams: p- p+
Beam energies: (980.0, 980.0) GeV
Run details:
  • Requires $2\rightarrow{2}$ QCD scattering processes. The minimum jet $E_\perp$ is 62 GeV, so a cut on kinematic pTmin may be required for good statistics.

Measurement of the inclusive jet cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV as a function of jet $E_\perp$, for $E_\perp >$ 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_S7828950.cc
 1// -*- C++ -*-
 2#include "Rivet/Analysis.hh"
 3#include "Rivet/Tools/BinnedHistogram.hh"
 4#include "Rivet/Projections/FastJets.hh"
 5
 6namespace Rivet {
 7
 8
 9  /// @brief CDF Run II inclusive jet cross-section using the Midpoint algorithm.
10  ///
11  /// The analysis includes 1.1fb^-1 of CDF data and is the first with a
12  /// cone algorithm to include the forward region of the detector.
13  /// arXiv:0807.2204 to be published in PRD
14  class CDF_2008_S7828950 : public Analysis {
15  public:
16
17    RIVET_DEFAULT_ANALYSIS_CTOR(CDF_2008_S7828950);
18
19
20    /// @name Analysis methods
21    //@{
22
23    // Book histos and set counters for number of events passed in each one
24    void init() {
25      const FinalState fs;
26      declare(FastJets(fs, FastJets::CDFMIDPOINT, 0.7), "JetsM07");
27
28      {Histo1DPtr tmp; _binnedHistosR07.add(  0, 0.1, book(tmp, 1, 1, 1));}
29      {Histo1DPtr tmp; _binnedHistosR07.add(0.1, 0.7, book(tmp, 2, 1, 1));}
30      {Histo1DPtr tmp; _binnedHistosR07.add(0.7, 1.1, book(tmp, 3, 1, 1));}
31      {Histo1DPtr tmp; _binnedHistosR07.add(1.1, 1.6, book(tmp, 4, 1, 1));}
32      {Histo1DPtr tmp; _binnedHistosR07.add(1.6, 2.1, book(tmp, 5, 1, 1));}
33    }
34
35
36    // Do the analysis
37    void analyze(const Event& event) {
38      for (const Jet& jet : apply<FastJets>(event, "JetsM07").jets(Cuts::pT > 62*GeV)) {
39        _binnedHistosR07.fill(jet.absrap(), jet.pT(), 1.0);
40      }
41    }
42
43
44    // Normalise histograms to cross-section
45    void finalize() {
46      _binnedHistosR07.scale(crossSection()/nanobarn/sumOfWeights()/2.0, this);
47    }
48
49    //@}
50
51
52  private:
53
54    /// Histograms in different eta regions
55    BinnedHistogram _binnedHistosR07;
56
57  };
58
59
60
61  RIVET_DECLARE_ALIASED_PLUGIN(CDF_2008_S7828950, CDF_2008_I790693);
62
63}