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Discussion about the orthopositronium decay rate and analysis of some $O(α^2)$ contributions

V. Antonelli
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Abstract

I consider the problem of the evaluation of the orthopositronium decay rate, including second order radiative corrections. I present a brief theoretical discussion of this problem and a review of the results available in literature, and, then, I analyze some $O(α^2)$ annihilation-type contributions, recently computed.

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V. Antonelli. 1998-07-29. Discussion about the orthopositronium decay rate and analysis of some $O(α^2)$ contributions. https://arxiv.org/abs/hep-ph/9807542

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