Phys. Rev. A 27, 530–532 (1983)Analytic evaluation of an O(α) vertex correction to the decay rate of orthopositroniumReceived 12 April 1982; published in the issue dated January 1983 In this report the order-α correction to the lowest-order orthopositronium decay rate due to the two outer-vertex graphs is obtained in analytic form. © 1983 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.27.530
DOI:
10.1103/PhysRevA.27.530
PACS:
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