We consider hard three-loop nonlogarithmic corrections of order mα7 to hyperfine splitting in muonium and positronium. All these contributions are generated by the graphs with photon, electron and/or muon loop radiative insertions in the two-photon exchange diagrams. We calculate contributions of six gauge invariant sets of diagrams.
|Journal||International Journal of Modern Physics A|
|State||Published - Jan 30 2016|
Bibliographical notePublisher Copyright:
© 2016 World Scientific Publishing Company.
- hyperfine splitting
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Astronomy and Astrophysics