Determination of the parton distribution functions of the proton from ATLAS measurements of differential W± and Z boson production in association with jets



Aad, G, Abbott, B, Abbott, DC, Abed Abud, A, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2815 more authors) (2021) Determination of the parton distribution functions of the proton from ATLAS measurements of differential W± and Z boson production in association with jets JOURNAL OF HIGH ENERGY PHYSICS, 2021 (7). 223-. ISSN 1126-6708, 1029-8479

Access the full-text of this item by clicking on the Open Access link.

Abstract

This article presents a new set of proton parton distribution functions, ATLASepWZVjet20, produced in an analysis at next-to-next-to-leading order in QCD. The new data sets considered are the measurements of W+ and W boson and Z boson production in association with jets in pp collisions at s = 8 TeV performed by the ATLAS experiment at the LHC with integrated luminosities of 20.2 fb−1 and 19.9 fb−1, respectively. The analysis also considers the ATLAS measurements of differential W± and Z boson production at s = 7 TeV with an integrated luminosity of 4.6 fb−1 and deep-inelastic-scattering data from e±p collisions at the HERA accelerator. An improved determination of the sea-quark densities at high Bjorken x is shown, while confirming a strange-quark density similar in size to the up- and down-sea-quark densities in the range x ≲ 0.02 found by previous ATLAS analyses. [Figure not available: see fulltext.]

Item Type: Article
Additional Information: 43 pages in total, author list starts page 28, 11 figures, 4 tables. Published in JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2019-18
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), QCD
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 31 Aug 2021 08:17
Last Modified: 23 May 2026 05:33
DOI: 10.1007/JHEP07(2021)223
Open Access URL: https://link.springer.com/article/10.1007%2FJHEP07...
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3135314
Disclaimer: The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.