Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of theW→ℓνandZ→ℓℓCross Sections

2012/03/31 by ATLAS Collaboration, G. Aad, B. Abbott +97 · 4 citations
Physics and Astronomy · #ATLAS experiment #Atlas (anatomy) #Boson #HERA #High-Energy Particle Collisions Research #Large Hadron Collider #Momentum transfer #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #Scattering #Strange quark #hep-ex

paper · pdf · doi:10.1103/physrevlett.109.012001

published as Phys.Rev.Lett. 109 (2012) 012001 · 4 pages plus author list (18 pages total), 3 figures, revised author list, matches published PRL version

openalex publication_date 2012/07/05 · arxiv created 2012/07/06 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

A QCD analysis is reported of ATLAS data on inclusive W^\ifmmode±\else\textpm\fi 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\ensuremath∼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_\ensuremath-0.28^+0.25 at absolute four-momentum transfer squared Q²=1.9 GeV² and x=0.023.

Citations

• 3-, 4-, and 5-flavor next-to-next-to-leading order parton distribution functions from deep-inelastic-scattering data and at hadron colliders
• Vector Boson Production at Hadron Colliders: A Fully Exclusive QCD Calculation at Next-to-Next-to-Leading Order
• Neutrino interactions at ultrahigh energies
• Combined measurement and QCD analysis of the inclusive e ± p scattering cross sections at HERA
• A determination of parton distributions with faithful uncertainty estimation

Cited by

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• Review of single vector boson production in pp collisions at √(s) = 7 s = 7 TeV
• Gauge invariance and kaon production in deep inelastic scattering at low scales
• Parton distributions from high-precision collider data