期刊
PHYSICS LETTERS B
卷 761, 期 -, 页码 179-183出版社
ELSEVIER
DOI: 10.1016/j.physletb.2016.08.017
关键词
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资金
- Swiss National Science Foundation (SNF) [CRSII2-141847, 200021-156585]
- Research Executive Agency (REA) of the European Union [PITN-GA-2012-316704]
- National Science Foundation [NSF PHY11-25915]
- Swiss National Science Foundation (SNF) [200021_156585] Funding Source: Swiss National Science Foundation (SNF)
We report on the first computation of the next-to-next-to-leading order (NNLO) QCD corrections to W (+/-) Z production in proton collisions. We consider both the inclusive production of on-shell W (+/-) Z pairs at LHC energies and the total W (+/-) Z rates including off-shell effects of the Wand Z bosons. In the off-shell computation, the invariant mass of the lepton pairs from the Z boson decay is required to be in a given mass window, and the results are compared with the corresponding measurements obtained by the ATLAS and CMS collaborations. The NNLOcorrections range from 8% at root s= 7 TeV to 11% at root s = 14 TeV and significantly improve the agreement with the LHC data at root s = 7 and 8 TeV. (C) 2016 The Author(s). Published by Elsevier B.V.
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