Next-to-leading order QCD predictions for W+3-jet distributions at hadron colliders
Author(s)
Berger, Carola; Bern, Z.; Dixon, L. J.; Cordero, F. Febres; Forde, D.; Gleisberg, T.; Ita, H.; Kosower, D. A.; Maître, D.; ... Show more Show less
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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 3%. 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.
Date issued
2009-10Department
Massachusetts Institute of Technology. Center for Theoretical PhysicsJournal
Physical Review D
Publisher
American Physical Society
Citation
Berger, C.F. et al "Next-to-leading order QCD predictions for W+3-jet distributions at hadron colliders." Physical Review D 80.7 (2009): 074036. © 2009 The American Physical Society
Version: Final published version
ISSN
1550-2368
1550-7998