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QED corrections to the parity-violating asymmetry in high-energy electron-nucleus collisions

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arxiv 2501.14375 v2 pith:FQAIEKFO submitted 2025-01-24 nucl-th nucl-ex

Xavier Roca-Maza , D H. Jakubassa-Amundsen This is my paper · ORCID
classification nucl-thnucl-ex
keywords asymmetrycorrectionsneutronnucleiparity-violatinganglesapproximatelyaround
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The parity-violating asymmetry, including leading-order QED corrections to the Coulomb potential, is calculated non-perturbatively by solving the Dirac equation. At GeV collision energies and forward scattering angles, QED effects enhance the asymmetry by approximately 5% for the recently measured nuclei 27Al, 48Ca, and 208Pb. The corrections result in a shift of the estimated neutron radius, leading to an increase in the inferred neutron skin thicknesses of these nuclei and, thus, to the pressure neutrons feel around nuclear saturation density.

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Cited by 1 Pith paper

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  1. From CREX to CEvNS: The Weak Radius of 40Ar

    nucl-th 2025-09 conditional novelty 6.0 of 10

    The weak radius of 40Ar is estimated as 3.452 ± 0.028 (stat) ± 0.022 (syst) fm by anchoring to CREX via a strong model-predicted Ca-Ar correlation.

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