Rivet analyses

title: CDF_2008_I805902

Dijet mass spectrum

Experiment: CDF (Tevatron Run 2)

Inspire ID: 805902

Status: VALIDATED

Authors: - Frank Siegert

References: - arXiv: 0812.4036

Beams: p- p+

Beam energies: (980.0, 980.0)GeV

Run details: - $p \bar{p} \to$ jets at 1960 GeV

Dijet mass spectrum from 0.2 TeV to 1.4 TeV in $p \bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV, based on an integrated luminosity of 1.13 fb$^{-1}$.

Source code:CDF_2008_I805902.cc

```c++ // -- C++ --

include "Rivet/Analysis.hh"

include "Rivet/Projections/FastJets.hh"

include "Rivet/Projections/FinalState.hh"

namespace Rivet {

/// @brief CDF dijet mass spectrum class CDF_2008_I805902 : public Analysis { public:

RIVET_DEFAULT_ANALYSIS_CTOR(CDF_2008_I805902);


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

/// Book histograms
void init() {
  FinalState fs;
  FastJets conefinder(fs, JetAlg::CDFMIDPOINT, 0.7);
  declare(conefinder, "ConeFinder");

  book(_h_m_dijet, 1, 1, 1);
}


/// Do the analysis
void analyze(const Event& e) {
  const JetFinder& jetpro = apply<JetFinder>(e, "ConeFinder");
  const Jets& jets = jetpro.jetsByPt();

  if (jets.size() < 2) vetoEvent;

  const FourMomentum j0(jets[0].momentum());
  const FourMomentum j1(jets[1].momentum());
  if (j1.absrap() > 1.0 || j0.absrap() > 1.0) {
    vetoEvent;
  }

  double mjj = FourMomentum(j0 + j1).mass();
  _h_m_dijet->fill(mjj);
}


/// Finalize
void finalize() {
  scale(_h_m_dijet, crossSection() / picobarn / sumOfWeights());
}

/// @}

private:

/// Histogram
Histo1DPtr _h_m_dijet;

};

RIVET_DECLARE_ALIASED_PLUGIN(CDF_2008_I805902, CDF_2008_S8093652);

} ```

Aliases: - CDF_2008_S8093652