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Discussion about the orthopositronium decay rate and analysis of some O(α²) contributions
classification
✦ hep-ph
hep-exphysics.atom-ph
keywords
alphacontributionsdecaydiscussionorthopositroniumproblemratesome
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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 $O(\alpha^2)$ annihilation-type contributions, recently computed.
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