Contribution of vacuum polarization to a correction of order {alpha}{sup 2} to the positronium width
Journal Article
·
· Physics of Atomic Nuclei
OSTI ID:107544
- Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)
- Institute of Mathematics, Novosibirsk (Russian Federation)
The contributions of two-loop diagrams containing the photon self-energy to the widths of ortho- and parapositronium are calculated. Their relative values are 0.4468(3)({alpha}/{pi}){sup 2} for parapositronium and 0.960(3)({alpha}/{pi}){sup 2} for orthopositronium. 10 refs., 3 figs., 2 tabs.
- OSTI ID:
- 107544
- Journal Information:
- Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 5 Vol. 58; ISSN 1063-7788; ISSN PANUEO
- Country of Publication:
- United States
- Language:
- English
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