Determination of the strange-quark density of the proton from ATLAS measurements of the W → ℓν and Z → ℓℓ cross sections
Files
(Published version)
Date
2012
Authors
Aad, G.
ATLAS Collaboration,
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Physical Review Letters, 2012; 109(1):012001-1-012001-17
Statement of Responsibility
G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... et al. (ATLAS Collaboration)
Conference Name
Abstract
A QCD analysis is reported of ATLAS data on inclusive W± and Z boson production in pp collisions at the LHC, jointly with ep deep-inelastic scattering data from HERA. The ATLAS data exhibit sensitivity to the light quark sea composition and magnitude at Bjorken x∼0.01. Specifically, the data support the hypothesis of a symmetric composition of the light quark sea at low x. The ratio of the strange-to-down sea quark distributions is determined to be 1.00+0.25−0.28 at absolute four-momentum transfer squared Q2=1.9 GeV2 and x=0.023.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© 2012 CERN, for the ATLAS Collaboration.Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.