Journal Article

PUBDB-2023-01875

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Moments and power corrections of longitudinal and transverse proton structure functions from lattice QCD

Batelaan, M. ; Can, K. U. (Corresponding author)Extern* ; Hannaford-Gunn, A. ; Horsley, R. ; Nakamura, Y. ; Perlt, H. ; Rakow, P. E. L. ; Schierholz, G.Extern*DESY* ; Stüben, H. ; Young, R. D. ; Zanotti, J. M. ; QCDSF/UKQCD/CSSM Collaboration (Collaboration Author) ; CSSM Collaboration (Collaboration Author) ; UKQCD Collaboration (Collaboration Author) ; QCDSF Collaboration (Collaboration Author)

2023
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevD.107.054503  doi:10.3204/PUBDB-2023-01875

Report No.: ADP-22-27/T1198; DESY-22-145; LTH 1307; arXiv:2209.04141

Abstract: We present a simultaneous extraction of the moments of $F_2$ and $F_L$ structure functions of the proton for a range of photon virtuality, $Q_2$. 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 $F_2$ and $F_L$ in good agreement with experiment. Power corrections turn out to be significant. This is the first time the $Q^2$ dependence of the lowest moment of $F_2$ has been quantified.

Keyword(s): p: structure function ; lattice field theory ; transverse ; photon ; longitudinal

Note: 14 pages, 11 figures, 2 tables. Version to appear in PRD

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2023

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Database coverage:
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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Batelaan, M. ; Can, K. U. ; Hannaford-Gunn, A. ; Horsley, R. ; Nakamura, Y. ; Perlt, H. ; Rakow, P. E. L. ; Schierholz, G.DESY* ; Stüben, H. ; Young, R. D. ; Zanotti, J. M. ; QCDSF/UKQCD/CSSM Collaborations (Collaboration author)
Moments and power corrections of longitudinal and transverse proton structure functions from lattice QCD
[10.3204/PUBDB-2022-04648]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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