期刊
PHYSICAL REVIEW D
卷 80, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.80.074036
关键词
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资金
- U. S. Department of Energy [DE-FG03-91ER40662, DE-AC0276SF00515, DE-FC02-94ER40818, DE-AC0205CH11231]
- European Research Council under Advanced Investigator [ERC-AdG-228301]
- U. S. LHC Theory Initiative through NSF [PHY-0705682]
- National Energy Research Scientific Computing Center
- Science and Technology Facilities Council [ST/G000905/1] Funding Source: researchfish
- STFC [ST/G000905/1] Funding Source: UKRI
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.
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