Study of proton parton distribution functions at high <i>x</i> using ZEUS data

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Abt, I, Adamczyk, L, Aggarwal, R, Aushev, V, Behnke, O, Behrens, U, Bertolin, A, Bloch, I, Brock, I, Brook, NH et al (show 82 more authors) , Brugnera, R, Bruni, A, Bussey, PJ, Caldwell, A, Capua, M, Catterall, CD, Chwastowski, J, Ciborowski, J, Ciesielski, R, Cooper-Sarkar, AM, Corradi, M, Dementiev, RK, Dusini, S, Ferrando, J, Foster, B, Gallo, E, Gangadharan, D, Garfagnini, A, Geiser, A, Gladilin, LK, Golubkov, Yu A, Grzelak, G, Gwenlan, C, Hochman, D, Jomhari, NZ, Kadenko, I, Kananov, S, Karshon, U, Kaur, P, Klanner, R, Klein, U ORCID: 0000-0001-7391-5330, Korzhavina, IA, Kovalchuk, N, Kowalski, H, Kuprash, O, Kuze, M, Levchenko, BB, Levy, A, Loehr, B, Longhin, A, Lukina, O Yu, Makarenko, I, Malka, J, Masciocchi, S, Nagano, K, Nam, JD, Onderwaater, J, Onishchuk, Yu, Paul, E, Pidhurskyi, I, Polini, A, Przybycien, M, Quintero, A, Ruspa, M, Saxon, DH, Schneekloth, U, Schoerner-Sadenius, T, Selyuzhenkov, I, Shchedrolosiev, M, Shcheglova, LM, Skillicorn, IO, Slominski, W, Solano, A, Stanco, L, Stefaniuk, N, Stopa, P, Surrow, B, Sztuk-Dambietz, J, Tassi, E, Tokushuku, K, Turcato, M, Turkot, O, Tymieniecka, T, Verbytskyi, A, Abdullah, WAT Wan, Wichmann, K, Wing, M, Yamada, S, Yamazaki, Y, Zarnecki, AF, Zawiejski, L and Zenaiev, O (2020) Study of proton parton distribution functions at high <i>x</i> using ZEUS data. PHYSICAL REVIEW D, 101 (11). 112009-.

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Abstract

At large values of x, the parton distribution functions (PDFs) of the proton are poorly constrained and there are considerable variations between different global fits. Data at such high x have already been published by the ZEUS Collaboration, but not yet used in PDF extractions. A technique for comparing predictions based on different PDF sets to the observed number of events in the ZEUS data is presented. It is applied to compare predictions from the most commonly used PDFs to published ZEUS data at high Bjorken x. A wide variation is found in the ability of the PDFs to predict the observed results. A scheme for including the ZEUS high-x data in future PDF extractions is discussed.

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	17 Nov 2020 10:49
Last Modified:	15 Mar 2024 09:29
DOI:	10.1103/PhysRevD.101.112009
Open Access URL:	https://journals.aps.org/prd/abstract/10.1103/Phys...
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3107235