Preprint

PUBDB-2022-00327

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nucleon Form Factors from the Feynman-Hellmann Method in Lattice QCD

Batelaan, M. (Corresponding author) ; Horsley, R. ; Nakamura, Y. ; Perlt, H. ; Pleiter, D. ; Rakow, P. E. L. ; Schierholz, G.DESY* ; Stüben, H. ; Young, R. D. ; Zanotti, J. M.

2022

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Please use a persistent id in citations: doi:10.3204/PUBDB-2022-00327

Report No.: ADP-22-7/T1178; DESY-22-010; LTH-1297; arXiv:2202.01366

Abstract: Lattice QCD calculations of the nucleon electromagnetic form factors are of interest at both the high and low momentum transfer regions. For high momentum transfers especially there are open questions which require more intense study, such as the potential zero crossing in the proton's electric form factor. We will present recent progress from the QCDSF/UKQCD/CSSM collaboration on the calculation of these form factors using the Feynman-Hellmann method in lattice QCD. The Feynman-Hellmann method allows for greater control over excited states which we take advantage of by going to high values of the momentum transfer. In this proceeding we present results of the form factors up to $6 \textrm{GeV}^{2}$, using $N_{f}=2+1$ flavour fermions for three different pion masses in the range 310-470 $\textrm{MeV}$. The results are extrapolated to the physical pion mass through the use of a flavour breaking expansion.

Keyword(s): pi, mass ; quantum chromodynamics, lattice ; momentum transfer, low ; form factor, electromagnetic ; up, form factor ; form factor, electric ; form factor, up ; momentum transfer, high ; nucleon, form factor ; fermion, flavor ; lattice field theory ; crossing ; excited state ; GeV

Note: 10 pages, 7 figures, proceeding for the 38th International Symposium on Lattice Field Theory (Lattice 2021), 26-30 Jul 2021, Zoom/Gather@MIT, USA

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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 2022

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Database coverage:
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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article/Contribution to a conference proceedings Batelaan, M. (Corresponding author) ; Horsley, R. ; Nakamura, Y. ; Perlt, H. ; Pleiter, D. ; Rakow, P. E. L. ; Schierholz, G.DESY* ; Stuben, H. ; Young, R. D. ; Zanotti, J. ; QCDSF-UKQCD-CSSM Collaboration (Collaboration author)
Nucleon Form Factors from the Feynman-Hellmann Method in Lattice QCD
202238th International Symposium on Lattice Field Theory, LATTICE2021 , OnlineOnline, United States, 26 Jul 2021 - 30 Jul 20212021-07-262021-07-30 Proceedings of Science / International School for Advanced Studies (LATTICE2021), 426 (2022) [10.22323/1.396.0426]2022     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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