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Corrections to Hyperfine Splitting and Lamb Shift Induced by the Overlapping Two-Loop Electron Self-Energy Insertion in the Electron Line

M. I. Eides·S. G. Karshenboim·V. A. Shelyuto
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Abstract

Contributions to HFS and to the Lamb shift intervals of order $α^2(Zα)^5$ induced by the graph with the two-loop overlapping electron self-energy diagram inserted in the electron line are considered. Explicit expression for the overlapping two-loop self-energy diagram in the Fried-Yennie gauge is obtained. Contributions both to HFS and Lamb shift induced by the diagram containing such subgraph are calculated.

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M. I. Eides, S. G. Karshenboim, V. A. Shelyuto. 1993-12-24. Corrections to Hyperfine Splitting and Lamb Shift Induced by the Overlapping Two-Loop Electron Self-Energy Insertion in the Electron Line. https://arxiv.org/abs/hep-ph/9312337

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