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arXiv · 2606.27600

Radiative Corrections in Bound States: Recent Results

Andrzej Czarnecki·Artem O. Davydov
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Abstract

Two recent studies of radiative corrections to bound state properties are discussed. The change of the decay rate of a muon bound to a light nucleus has been calculated for several light nuclei $4\leq Z \leq 9$ with high precision, resolving a long-standing discrepancy between analytical and numerical results for oxygen ($Z=8$). The decay of parapositronium into three photons has been calculated including effects of the $Z$ boson. The resulting rate is many orders of magnitude smaller than previously estimated.

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Andrzej Czarnecki, Artem O. Davydov. 2026-06-25. Radiative Corrections in Bound States: Recent Results. https://arxiv.org/abs/2606.27600

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