ZZ production at the LHC: Fiducial cross sections and distributions in NNLO QCD

被引：124

作者：

Grazzini, Massimiliano ^{[1
]}

Kallweit, Stefan ^{[2
]}

Rathlev, Dirk ^{[1
]}

机构：

[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[2] Johannes Gutenberg Univ Mainz, Inst Phys, PRISMA Cluster Excellence, D-55099 Mainz, Germany

来源：

PHYSICS LETTERS B | 2015年 / 750卷

基金：

瑞士国家科学基金会;

关键词：

BOSON PAIR PRODUCTION; HADRON COLLIDERS; LEPTONIC SIGNALS; GAMMA; W+W; PP;

D O I：

10.1016/j.physletb.2015.09.055

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider QCD radiative corrections to the production of four charged leptons in the ZZ signal region at the LHC. We report on the complete calculation of the next-to-next-to-leading order (NNLO) corrections to this process in QCD perturbation theory. Numerical results are presented for root s = 8 TeV, using typical selection cuts applied by the ATLAS and CMS Collaborations. The NNLO corrections increase the NLO fiducial cross section by about 15%, and they have a relatively small impact on the shape of the considered kinematical distributions. In the case of the Delta Phi distribution of the two Z candidates, the computed corrections improve the agreement of the theoretical prediction with the CMS data. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：407 / 410

页数：4

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