Precision measurement and interpretation of inclusive W+, W- and Z/gamma* production cross sections with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H
et al (show 2850 more authors) (2017) Precision measurement and interpretation of inclusive W+, W- and Z/gamma* production cross sections with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 77 (6). 367-.

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Abstract

High-precision measurements by the ATLAS Collaboration are presented of inclusive W+→ℓ+ν, W−→ℓ−ν¯ and Z/γ∗→ℓℓ (ℓ=e,μ) Drell–Yan production cross sections at the LHC. The data were collected in proton–proton collisions at s√=7TeV with an integrated luminosity of 4.6fb−1. Differential W+ and W− cross sections are measured in a lepton pseudorapidity range |ηℓ|<2.5. Differential Z/γ∗ cross sections are measured as a function of the absolute dilepton rapidity, for |yℓℓ|<3.6, for three intervals of dilepton mass, mℓℓ, extending from 46 to 150GeV. The integrated and differential electron- and muon-channel cross sections are combined and compared to theoretical predictions using recent sets of parton distribution functions. The data, together with the final inclusive e±p scattering cross-section data from H1 and ZEUS, are interpreted in a next-to-next-to-leading-order QCD analysis, and a new set of parton distribution functions, ATLAS-epWZ16, is obtained. The ratio of strange-to-light sea-quark densities in the proton is determined more accurately than in previous determinations based on collider data only, and is established to be close to unity in the sensitivity range of the data. A new measurement of the CKM matrix element |Vcs| is also provided.

Item Type: Article
Additional Information: 98 pages in total, author list starting page 82, 32 figures, 29 tables, published in EPJC, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2012-20
Uncontrolled Keywords: ATLAS Collaboration, ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 30 Jun 2017 10:50
Last Modified: 19 Jan 2023 07:01
DOI: 10.1140/epjc/s10052-017-4911-9
Open Access URL: https://arxiv.org/abs/1612.03016
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3008261