W^±Z production at hadron colliders in NNLO QCD

详细信息    查看全文

• 作者：Massimiliano Grazzini^a ; ^{grazzini@physik.uzh.ch" class="auth_mail" title="E-mail the corresponding author} ; Stefan Kallweit^b ; ^c ; Dirk Rathlev^d ; Marius Wiesemann^a
• 刊名：Physics Letters B
• 出版年：2016
• 出版时间：10 October 2016
• 年：2016
• 卷：761
• 期：Complete
• 页码：179-183
• 全文大小：294 K

文摘

We report on the first computation of the next-to-next-to-leading order (NNLO) QCD corrections to W^±Z$W^{\pm }Z$ production in proton collisions. We consider both the inclusive production of on-shell W^±Z$W^{\pm }Z$ pairs at LHC energies and the total W^±Z$W^{\pm }Z$ rates including off-shell effects of the W and 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 NNLO corrections range from 8%$8\text{\%}$ at $\sqrt{s}=7\text{TeV}$ to 11%$11\text{\%}$ at $\sqrt{s}=14\text{TeV}$ and significantly improve the agreement with the LHC data at $\sqrt{s}=7$ and $8\text{TeV}$.