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Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W -> lv and Z -> ll Cross Sections
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0001-5650-4556
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-1921-6173
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-3867-0336
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2012 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 109, no 1, p. 012001-Article in journal (Refereed) Published
Abstract [en]

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, p. 012001-
Keywords [en]
Deep-Inelastic Scattering, Parton Distributions, Lhc
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-100211DOI: 10.1103/PhysRevLett.109.012001ISI: 000306323400002Scopus ID: 2-s2.0-84863710932OAI: oai:DiVA.org:kth-100211DiVA, id: diva2:543040
Note
QC 20120806. Author count: 3035.Available from: 2012-08-06 Created: 2012-08-06 Last updated: 2024-03-15Bibliographically approved

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Jovicevic, JelenaKuwertz, EmmaLund-Jensen, BengtStrandberg, Jonas

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