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## Rivet analyses reference

### CDF_1998_S3618439

Differential cross-section for events with large total transverse energy
Experiment: CDF (Tevatron Run 1)
Inspire ID: 448075
Status: VALIDATED
Authors:
• Frank Siegert
References:
• Phys.Rev.Lett.80:3461-3466,1998
• 10.1103/PhysRevLett.80.3461
Beams: p- p+
Beam energies: (900.0, 900.0) GeV
Run details:
• QCD events at Tevatron with $\sqrt{s}=1.8$ TeV without MPI.

Measurement of the differential cross section $\mathrm{d}\sigma/\mathrm{d}E_\perp^j$ for the production of multijet events in $p\bar{p}$ collisions where the sum is over all jets with transverse energy $E_\perp^j > E_\perp^\mathrm{min}$.

Source code: CDF_1998_S3618439.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 // -*- C++ -*- #include "Rivet/Analysis.hh" #include "Rivet/Projections/FinalState.hh" #include "Rivet/Projections/FastJets.hh" namespace Rivet { /// @brief CDF diff cross-section in events with large missing energy class CDF_1998_S3618439 : public Analysis { public: /// Constructor DEFAULT_RIVET_ANALYSIS_CTOR(CDF_1998_S3618439); /// @name Analysis methods //@{ /// Book histograms and initialise projections before the run void init() { FinalState fs(Cuts::abseta < 4.2); declare(FastJets(fs, FastJets::CDFJETCLU, 0.7), "Jets"); book(_h_sumET_20 ,1, 1, 1); book(_h_sumET_100 ,1, 1, 2); } /// Perform the per-event analysis void analyze(const Event& event) { const Jets jets = apply(event, "Jets").jets(Cuts::Et > 20*GeV, cmpMomByEt); double sumET_20(0.0), sumET_100(0.0); for (const Jet& jet : jets) { double ET = jet.Et()/GeV; sumET_20 += ET; if (ET > 100.0) sumET_100 += ET; } if (sumET_20 > 320.0) _h_sumET_20->fill(sumET_20); if (sumET_100 > 320.0) _h_sumET_100->fill(sumET_100); } /// Normalise histograms etc., after the run void finalize() { scale(_h_sumET_20, crossSection()/picobarn/sumOfWeights()); scale(_h_sumET_100, crossSection()/picobarn/sumOfWeights()); } //@} private: /// @name Histograms //@{ Histo1DPtr _h_sumET_20, _h_sumET_100; //@} }; // The hook for the plugin system DECLARE_RIVET_PLUGIN(CDF_1998_S3618439); }