Three-loop corrections to lamb shift in positronium: Electron factor and polarization

Michael I. Eides; Valery A. Shelyuto

doi:10.1016/j.physletb.2022.137247

Three-loop corrections to lamb shift in positronium: Electron factor and polarization

Michael I. Eides, Valery A. Shelyuto

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3 Scopus citations

Abstract

Hard spin-independent three-loop radiative contributions to energy levels in positronium generated by the two-photon-exchange diagrams with one-loop radiative insertions in the fermion lines and exchanged photons are calculated. This is a next step in calculations of all corrections of order mα⁷ inspired by the new generation of precise 1S−2S and 2S−2P measurements in positronium.

Original language	English
Article number	137247
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	832
DOIs	https://doi.org/10.1016/j.physletb.2022.137247
State	Published - Sep 10 2022

Bibliographical note

Publisher Copyright:
© 2022 The Authors

Funding

This work was supported by the NSF grants PHY-1724638 and PHY-2011161 .

Funders	Funder number
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	PHY-1724638, PHY-2011161

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2022.137247

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abstract = "Hard spin-independent three-loop radiative contributions to energy levels in positronium generated by the two-photon-exchange diagrams with one-loop radiative insertions in the fermion lines and exchanged photons are calculated. This is a next step in calculations of all corrections of order mα7 inspired by the new generation of precise 1S−2S and 2S−2P measurements in positronium.",

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AU - Shelyuto, Valery A.

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AB - Hard spin-independent three-loop radiative contributions to energy levels in positronium generated by the two-photon-exchange diagrams with one-loop radiative insertions in the fermion lines and exchanged photons are calculated. This is a next step in calculations of all corrections of order mα7 inspired by the new generation of precise 1S−2S and 2S−2P measurements in positronium.

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Three-loop corrections to lamb shift in positronium: Electron factor and polarization

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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