Two-Loop Correction to the Orthopositron
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Gregory S. Adkins; Richard N. Fell; J. Sapirstein
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Article
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2002
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Elsevier Science
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English
โ 473 KB
We give a detailed description of our calculation of the O(ฮฑ 2 ) correction to the orthopositronium decay rate. The resulting correction is 45.06(26) in units of (ฮฑ/ฯ) 2 times the lowest order rate. When combined with other known corrections, the theoretical prediction for the decay rate is 7.039979