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  • Open Access

Nucleon electromagnetic form factors in nonlocal chiral effective theory

Y. Salamu and Alim Ablat

  • School of Physics and Electrical Engineering, Kashi University, Kashgar, 844000, Xinjiang, China

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Phys. Rev. D 114, 076017 – Published 13 October, 2026

DOI: https://doi.org/10.1103/w3ct-d9fv

Abstract

In this paper, we calculate the pion one-loop corrections to the electromagnetic form factors of the nucleon up to O(p4) order in the nonlocal framework. To systematically investigate the role of vector-meson dominance in the model, we also include the leading-order nucleon–vector-meson coupling. Owing to the renormalization-scheme dependence of chiral low-energy coupling constants, we refit these constants to the nucleon magnetic moments, electromagnetic radii, and the Q2-dependence of the electromagnetic form factors. Compared with the previous local analysis, the model results show that, in the nonlocal framework, the Q2-dependence of the electromagnetic form factors in the large-Q2 region is significantly improved and is consistent with experimental data.

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Phys. Rev. D 114, 076017– Published 13 October, 2026
  • Received 12 August 2026
  • Accepted 28 September 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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