Moments and power corrections of longitudinal and transverse proton structure functions from lattice QCD



Batelaan, M, Can, KU, Hannaford-Gunn, A, Horsley, R, Nakamura, Y, Perlt, H, Rakow, PEL ORCID: 0000-0003-4486-2158, Schierholz, G, Stueben, H, Young, RD
et al (show 1 more authors) (2023) Moments and power corrections of longitudinal and transverse proton structure functions from lattice QCD. PHYSICAL REVIEW D, 107 (5). 054503-.

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Abstract

We present a simultaneous extraction of the moments of F2 and FL structure functions of the proton for a range of photon virtuality, Q2. This is achieved by computing the forward Compton amplitude on the lattice utilizing the second-order Feynman-Hellmann theorem. Our calculations are performed on configurations with two different lattice spacings and volumes, all at the SU(3) symmetric point. We find the moments of F2 and FL in good agreement with experiment. Power corrections turn out to be significant. This is the first time the Q2 dependence of the lowest moment of F2 has been quantified.

Item Type: Article
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 04 May 2023 09:21
Last Modified: 15 Mar 2024 07:27
DOI: 10.1103/PhysRevD.107.054503
Open Access URL: https://doi.org/10.1103/PhysRevD.107.054503
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3170150