Measurement of the ZZ Production Cross Section in pp Collisions at root s=13 TeV with the ATLAS Detector



Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, Abolins, M, AbouZeid, OS, Abramowicz, H, Abreu, H
et al (show 2841 more authors) (2016) Measurement of the ZZ Production Cross Section in pp Collisions at root s=13 TeV with the ATLAS Detector PHYSICAL REVIEW LETTERS, 116 (10). pp. 1-22. ISSN 0031-9007, 1079-7114

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Abstract

The production of W±Z events in proton–proton collisions at a centre-of-mass energy of 13 TeV is measured with the ATLAS detector at the LHC. The collected data correspond to an integrated luminosity of 3.2 fb−1. The W±Z candidates are reconstructed using leptonic decays of the gauge bosons into electrons or muons. The measured inclusive cross section in the detector fiducial region for leptonic decay modes is σ<inf>W<sup>±</sup>Z→ℓ<sup>′</sup>νℓℓ</inf> fid.=63.2±3.2(stat.)±2.6(sys.)±1.5(lumi.) fb. In comparison, the next-to-leading-order Standard Model prediction is 53.4<inf>−2.8</inf> +3.6 fb. The extrapolation of the measurement from the fiducial to the total phase space yields σ<inf>W<sup>±</sup>Z</inf> tot.=50.6±2.6(stat.)±2.0(sys.)±0.9(th.)±1.2(lumi.) pb, in agreement with a recent next-to-next-to-leading-order calculation of 48.2<inf>−1.0</inf> +1.1 pb. The cross section as a function of jet multiplicity is also measured, together with the charge-dependent W+Z and W−Z cross sections and their ratio.

Item Type: Article
Additional Information: 21 pages plus author list + cover pages (39 pages total), 4 figures, 4 tables, published in Phys. Lett. B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2015-19
Uncontrolled Keywords: electroweak interaction, particle production, W & Z bosons
Depositing User: Symplectic Admin
Date Deposited: 27 Mar 2017 14:50
Last Modified: 24 Jun 2026 19:03
DOI: 10.1103/PhysRevLett.116.101801
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3006013
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