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arXiv · 2301.05883

QED corrections to elastic electron-nucleus scattering beyond the first-order Born approximation

D. H. Jakubassa-Amundsen
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Abstract

A potential for the vertex and self-energy correction is derived from the first-order Born theory. The inclusion of this potential in the Dirac equation, together with the Uehling potential for vacuum polarization, allows for a nonperturbative treatment of these QED effects within the phase-shift analysis. Investigating the 12C and 208Pb targets, a considerable deviation of the respective cross-section change from the Born results is found, which becomes larger with increasing momentum transfer. Estimates for the correction to the beam-normal spin asymmetry are also provided. For the 12C nucleus, dispersion effects are considered as well.

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D. H. Jakubassa-Amundsen. 2023-01-14. QED corrections to elastic electron-nucleus scattering beyond the first-order Born approximation. https://arxiv.org/abs/2301.05883

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