Measurement of the ratio of three-jet to two-jet cross sections in pp-bar collisions at sqrt(s) = 1.96 TeV

Abstract

We present a measurement of the ratio of multijet cross sections in pp-bar collisions at sqrt(s) = 1.96 TeV at the Fermilab Tevatron Collider. The measurement is based on a data set corresponding to an integrated luminosity of 0.7 fb-1 collected with the D0 detector. The ratio of the inclusive three-jet to two-jet cross sections, R3/2, has been measured as a function of the jet transverse momenta. The data are compared to QCD predictions in different approximations. Popular tunes of the PYTHIA event generator do not agree with the data, while SHERPA provides a reasonable description of the data. A perturbative QCD prediction in next-to-leading order in the strong coupling constant, corrected for non-perturbative effects, gives a good description of the data.

submitted to Physics Letters B

References in corpus (13)

• Parton distributions for the LHC
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Implications of CTEQ global analysis for collider observables
• Measurement of the inclusive jet cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96\mathrm{TeV}$
• Measurement of multi-jet cross sections in proton-proton collisions at a 7 TeV center-of-mass energy
• Measurement of the inclusive jet cross section in p pbar collisions at sqrt(s)=1.96 TeV
• Measurement of angular correlations of jets at sqrt(s)=1.96 TeV and determination of the strong coupling at high momentum transfers
• The D0 Silicon Microstrip Tracker
• Search for resonant diphoton production with the D0 detector
• Measurement of the dijet invariant mass cross section in proton anti-proton collisions at sqrt{s} = 1.96 TeV
• Measurement of the Ratio of the 3-jet to 2-jet Cross Sections in pp Collisions at sqrt(s) = 7 TeV
• Measurement of the ratio of three-jet to two-jet cross sections in pp-bar collisions at sqrt(s) = 1.96 TeV

Cited by in corpus (5)

• Isolating Prompt Photons with Narrow Cones
• Study of double parton interactions in diphoton + dijet events in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Measurement of the combined rapidity and $p_T$ dependence of dijet azimuthal decorrelations in $p\bar{p}$ collisions at $\sqrt{s}=1.96$TeV
• Measurement of the ratio of three-jet to two-jet cross sections in pp-bar collisions at sqrt(s) = 1.96 TeV
• Review of physics results from the Tevatron: QCD physics