Next-to-Leading Order QCD Predictions for Z,gamma^*+3-Jet Distributions at the Tevatron

Details Next-to-Leading Order QCD Predictions for Z,gamma^*+3-Jet Distributions at the Tevatron Next-to-Leading Order QCD Predictions for Z,gamma^*+3-Jet Distributions at the Tevatron

2010-04-09

arxiv.org/abs/1004.1659v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

50 pages, RevTeX, 17 figures, v2 clarifications including commentary on threshold and other logarithms

Scientific paper

Using BlackHat in conjunction with SHERPA, we have computed next-to-leading order QCD predictions for a variety of distributions in Z,gamma*+1,2,3-jet production at the Tevatron, where the Z boson or off-shell photon decays into an electron-positron pair. We find good agreement between the NLO results for jet p_T distributions and measurements by CDF and D0. We also present jet-production ratios, or probabilities of finding one additional jet. As a function of vector-boson p_T, the ratios have distinctive features which we describe in terms of a simple model capturing leading logarithms and phase-space and parton-distribution-function suppression.

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