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arXiv · 1610.01340

Muonic vacuum polarization correction to the bound-electron $g$-factor

N. A. Belov·B. Sikora·R. Weis·V. A. Yerokhin·S. Sturm·K. Blaum·C. H. Keitel·Z. Harman
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Abstract

The muonic vacuum polarization contribution to the $g$-factor of the electron bound in a nuclear potential is investigated theoretically. The electric as well as the magnetic loop contributions are evaluated. We found these muonic effects to be observable in planned trapped-ion experiments with light and medium-heavy highly charged ions. The enhancement due to the strong Coulomb field boosts these contributions much above the corresponding terms in the free-electron $g$-factor. Due to their magnitude, muonic vacuum polarization terms are also significant in planned determinations of the fine-structure constant from the bound-electron $g$-factor.

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N. A. Belov, B. Sikora, R. Weis, V. A. Yerokhin, S. Sturm, K. Blaum, C. H. Keitel, Z. Harman. 2016-10-05. Muonic vacuum polarization correction to the bound-electron $g$-factor. https://arxiv.org/abs/1610.01340

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