Amoroso, S;
Apyan, A;
Armesto, N;
Ball, RD;
Bertone, V;
Bissolotti, C;
Blümlein, J;
... Zhou, B; + view all
(2023)
Snowmass 2021 Whitepaper: Proton Structure at the Precision Frontier.
Acta Physica Polonica B
, 53
(12)
, Article 12-A1. 10.5506/APhysPolB.53.12-A1.
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Abstract
An overwhelming number of theoretical predictions for hadron colliders require parton distribution functions (PDFs), which are an important ingredient of theory infrastructure for the next generation of high-energy experiments. This whitepaper summarizes the status and future prospects for determination of high-precision PDFs applicable in a wide range of energies and experiments, in particular in precision tests of the Standard Model and in new physics searches at the high-luminosity Large Hadron Collider and Electron–Ion Collider. We discuss the envisioned advancements in experimental measurements, QCD theory, global analysis methodology, and computing that are necessary to bring unpolarized PDFs in the nucleon to the N2LO and N3LO accuracy in the QCD coupling strength. Special attention is given to the new tasks that emerge in the era of the precision PDF analysis, such as those focusing on the robust control of systematic factors both in experimental measurements and theoretical computations. Various synergies between experimental and theoretical studies of the hadron structure are explored, including opportunities for studying PDFs for nuclear and meson targets, PDFs with electroweak contributions or dependence on the transverse momentum, for incisive comparisons between phenomenological models for the PDFs and computations on discrete lattice, and for cross-fertilization with machine learning/AI approaches.
| Type: | Article |
|---|---|
| Title: | Snowmass 2021 Whitepaper: Proton Structure at the Precision Frontier |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.5506/APhysPolB.53.12-A1 |
| Publisher version: | https://doi.org/10.5506/APhysPolB.53.12-A1 |
| Language: | English |
| Additional information: | © The Authors 2023. Funded by SCOAP3 under Creative Commons License, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/). |
| 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-pp.ucl.ac.uk/id/eprint/10171304 |
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