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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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
National Science Foundation (NSF)	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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N2 - 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.

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

Access to Document

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