Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W -> lv and Z -> ll Cross Sections
2012 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 109, no 1, 012001- p.Article in journal (Refereed) Published
AQCD 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 similar to 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(-0:28)(+0.25) at absolute four-momentum transfer squared Q(2) = 1: 9 GeV2 and x = 0: 023.
Place, publisher, year, edition, pages
2012. Vol. 109, no 1, 012001- p.
Deep-Inelastic Scattering, Parton Distributions, Lhc
IdentifiersURN: urn:nbn:se:kth:diva-100211DOI: 10.1103/PhysRevLett.109.012001ISI: 000306323400002ScopusID: 2-s2.0-84863710932OAI: oai:DiVA.org:kth-100211DiVA: diva2:543040
QC 20120806. Author count: 3035.2012-08-062012-08-06Bibliographically approved