Journal Article/Contribution to a conference proceedings

PUBDB-2022-07215

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* ; Stuben, H. ; Young, R. D. ; Zanotti, J. ; QCDSF-UKQCD-CSSM Collaboration (Collaboration author)

2022
SISSA Trieste

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Please use a persistent id in citations: doi:10.22323/1.396.0426  doi:10.3204/PUBDB-2022-07215

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 ; flavor: 3

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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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint 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.
Nucleon Form Factors from the Feynman-Hellmann Method in Lattice QCD
[10.3204/PUBDB-2022-00327]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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