Aad, G;
Abbott, B;
Abbott, DC;
Abed Abud, A;
Abeling, K;
Abhayasinghe, DK;
Abidi, SH;
... Zwalinski, L; + view all
(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
, Article 223. 10.1007/JHEP07(2021)223.
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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 \sqrt{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 \sqrt{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.
| Type: | Article |
|---|---|
| Title: | Determination of the parton distribution functions of the proton from ATLAS measurements of differential W± and Z boson production in association with jets |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP07(2021)223 |
| Publisher version: | https://doi.org/10.1007/JHEP07(2021)223 |
| Language: | English |
| Additional information: | © 2021 Springer Nature Switzerland AG. This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Hadron-Hadron scattering (experiments), QCD |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10133212 |
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