Aad, G.Abbott, B.Abbott, D. C.Abed Abud, A.Abeling, K.Abhayasinghe, D. K.Çetin, Serkant Ali2024-07-182024-07-1820211029-8479https://doi.org/10.1007/JHEP07(2021)223https://hdl.handle.net/11411/7066This article presents a new set of proton parton distribution functions, AT-LASepWZVjet20, 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 root s = 8TeV 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 root 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 less than or similar to 0.02 found by previous ATLAS analyses.eninfo:eu-repo/semantics/openAccessHadron-Hadron Scattering (Experiments)QcdArticle2-s2.0-8511265089010.1007/JHEP07(2021)2237Q2Q1WOS:000680916500001