info:eu-repo/semantics/article
Precision measurement and interpretation of inclusive W+, W− and Z/γ∗ production cross sections with the ATLAS detector
Fecha
2017-12Registro en:
Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; et al.; Precision measurement and interpretation of inclusive W+, W− and Z/γ∗ production cross sections with the ATLAS detector; Springer; European Physical Journal C: Particles and Fields; 77; 367; 12-2017; 1-98
1434-6044
CONICET Digital
CONICET
Autor
Aaboud, M.
Aad, G.
Abbott, B.
Abdallah, J.
Abdinov, O.
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, Maria Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernan Pablo
Bossio Sola, Jonathan David
Otero y Garzon, Gustavo Javier
Piegaia, Ricardo Nestor
Sacerdoti, Sabrina
Zhukov, K.
Zibell. A.
Zieminska, D.
Zimine, N. I.
Zimmermann, C.
Zimmermann, S.
Zinonos, Z.
Zinser, M.
Ziolkowski, M.
Živković, L.
Zobernig, G.
Zoccoli, A.
Nedden, M. zur
Zurzolo, G.
Zwalinski, L.
The ATLAS Collaboration
Resumen
High-precision measurements by the ATLAS Collaboration are presented of inclusive W+ → ` + ν, W− → ` − ν¯ and Z/γ∗ → `` (` = 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 4.6 fb−1 . Differential W+ and W− cross sections are measured in a lepton pseudorapidity range |η`| < 2.5. Differential Z/γ∗ cross sections are measured as a function of the absolute dilepton rapidity, for |y``| < 3.6, for three intervals of dilepton mass, m``, 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.