Next-to-Leading Order QCD Predictions for W+3-Jet Distributions at Hadron Colliders

By C. Berger, Z. Bern, L. Dixon, F. Cordero, D. Forde, T. Gleisberg, H. Ita, David A. Kosower, Daniel Maître. 2009

229 citations recorded by the source corpus.

We present next-to-leading order QCD predictions for a variety of distributions in W + 3-jet production at both the Tevatron and the Large Hadron Collider. We include all subprocesses and incorporate the decay of the W boson into leptons. Our results are in excellent agreement with existing Tevatron data and provide the first quantitatively precise next-to-leading order predictions for the LHC. We include all terms in an expansion in the number of colors, confirming that the specific leading-color approximation used in our previous study is accurate to within three percent. The dependence of the cross section on renormalization and factorization scales is reduced significantly with respect to a leading-order calculation. We study different dynamical scale choices, and find that the total transverse energy is significantly better than choices used in previous phenomenological studies. We compute the one-loop matrix elements using on-shell methods, as numerically implemented in the BlackHat code. The remaining parts of the calculation, including generation of the real-emission contributions and integration over phase space, are handled by the SHERPA package.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c622cbcaf5feaa3de76632d83ad1a23e76e8e560

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In Nuclear and High Energy Physics

Citations in the corpus

QCD matrix elements + parton showers. The NLO case (2012, methodology): “Virtual matrix elements for W + n jets are provided by the BLACKHAT library [6, 9, 55, 56].”
Event generation with Sherpa 2.2 (2019, methodology): “Renormalised QCD virtual corrections are obtained either through dedicated interfaces from programs and libraries like BLACKHAT [13, 70, 71, 72], MADGRAPH [73, 74], OPENLOOPS [14] and RECOLA [75], or through the generic Binoth Les-Houches Accord”
Soft triple-real radiation for Higgs production at N3LO (2013, unknown): “[1–14] See, for example, refs.”
NLO QCD matrix elements + parton showers in e+e− → hadrons (2012, methodology): “Automated dipole subtraction [29] and the Binoth–Les Houches interface [30] are employed to obtain parton-level events at next-to-leading order with virtual corrections provided by the BLACKHAT library [31–34].”
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].”