Next-to-leading order QCD predictions for Z,gamma^*+3-Jet distributions at the tevatron.

By C. Berger, Z. Bern, L. Dixon, F. Cordero, D. Forde, T. Gleisberg, H. Ita, David A. Kosower, Daniel Maître. 2010

137 citations recorded by the source corpus.

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 next-to-leading order results for jet p{sub 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{sub 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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/b27d88d17d5aaf7a9e2211a8f5a208060f77a568

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In Nuclear and High Energy Physics

Citations in the corpus

Electroweak corrections to dilepton + jet production at hadron colliders (2011, background): “Recently, NLO QCD results for W/Z + 3 jets and even W + 4 jets production (in leading-colour approximation) were presented [56–59].”
The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations (2014, methodology): “The BlackHat+SHERPA collaboration has provided samples and results for up to Z plus four jets and W plus five jets at the NLO [236–240].”
NLO matrix elements and truncated showers (2010, methodology): “Virtual matrix elements needed for the simulation were supplied by code provided by the BlackHat collaboration [60–63].”
NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders (2012, unknown): “While various multi-particle NLO QCD calculations have been performed in the recent years [34–48], W+W−bb̄ production involves the treatment of resonant particles for the first time in a hadron-collider environment on that level of complexity.”
Scattering amplitudes from unitarity-based reduction algorithm at the integrand-level (2010, background): “Currently, the state-of-the-art is represented by the numerical calculation of extremely challenging 2 → 4 processes, like the EW corrections to e+e− → 4f [41, 42], or the NLO QCD corrections to pp → W + 3 jet production [43–46], pp → Z + 3 jet production [47], pp → tt̄bb̄ [48–50] and pp → tt̄jj [51”
MadAnalysis 5, a user-friendly framework for collider phenomenology (2012, methodology): “On the other hand, several algorithms addressing the numerical calculation of loop amplitudes have been proposed [22, 23, 24, 25, 26] and successfully applied to the computation of Standard Model processes of physical interest [27, 28, 29, 30, 31].”
MadGraph 5: going beyond (2011, methodology): “For virtual corrections, several new algorithms for numerical calculation of loop amplitudes have been proposed (see, e.g. , [25] for a review) and some of them successfully applied to the computation of SM processes of physical interest [26, 27, 28, 29, 30].”