TY - JOUR
T1 - Precision measurement and interpretation of inclusive W+, W- and Z/gamma* production cross sections with the ATLAS detector
AU - Aaboud, M.
AU - Aad, G.
AU - Abbott, B.
AU - Abdallah, J.
AU - Abdinov, O.
AU - Abeloos, B
AU - AbouZeid, O.S.
AU - Abraham, NL
AU - Abramowicz, H.
AU - Abreu, H.
AU - Abreu, R.
AU - Abulaiti, Y.
AU - Acharya, B.S.
AU - Adachi, Shin-ichi
AU - Dam, Mogens
AU - Hansen, Jørn Dines
AU - Hansen, Jørgen Beck
AU - Xella, Stefania
AU - Hansen, Peter Henrik
AU - Petersen, Troels Christian
AU - Alonso Diaz, Alejandro
AU - Monk, James William
AU - Pedersen, Lars Egholm
AU - Wiglesworth, Graig
AU - Besjes, Geert-Jan
AU - Thomsen, Lotte Ansgaard
AU - Løvschall-Jensen, Ask Emil
AU - Galster, Gorm Aske Gram Krohn
AU - Stark, Simon Holm
AU - Thiele, Fabian Alexander Jürgen
AU - de Almeida Dias, Flavia
AU - Bajic, Milena
AU - Arnold, H.
AU - Barr, John
AU - Zhu, H.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - 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 | yℓ ℓ| < 3.6 , for three intervals of dilepton mass, mℓ ℓ, 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 | Vc s| is also provided.
AB - 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 | yℓ ℓ| < 3.6 , for three intervals of dilepton mass, mℓ ℓ, 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 | Vc s| is also provided.
U2 - 10.1140/epjc/s10052-017-4911-9
DO - 10.1140/epjc/s10052-017-4911-9
M3 - Journal article
C2 - 30215626
SN - 1434-6044
VL - 77
JO - European Physical Journal C
JF - European Physical Journal C
IS - 6
M1 - 367
ER -