Two-loop electron factor contribution to lamb shift in muonium and positronium

Michael I. Eides, Valery A. Shelyuto

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We calculate hard spin-independent contributions to energy levels in muonium and positronium which are due to radiatively corrected electron factor insertion in two-photon exchange diagrams. Calculation of these corrections is motivated by the new round of precise measurements of spin-independent transition frequencies in muonium and positronium.

Original languageEnglish
Article number138087
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume844
DOIs
StatePublished - Sep 10 2023

Bibliographical note

Publisher Copyright:
© 2023 The Author(s)

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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