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New measurement of the orthopositronium decay rate

✍ Scribed by S. Asai; S. Orito; N. Shinohara


Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
597 KB
Volume
357
Category
Article
ISSN
0370-2693

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Two-Loop Correction to the Orthopositron
✍ Gregory S. Adkins; Richard N. Fell; J. Sapirstein πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 473 KB

We give a detailed description of our calculation of the O(Ξ± 2 ) correction to the orthopositronium decay rate. The resulting correction is 45.06(26) in units of (Ξ±/Ο€) 2 times the lowest order rate. When combined with other known corrections, the theoretical prediction for the decay rate is 7.039979