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arXiv · hep-ph/0003277

Order (alpha^2 Gamma, alpha^3 Gamma) Binding Effects in Orthopositronium Decay

Richard J. Hill·G. Peter Lepage
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Abstract

We present a new, simplified analysis of the low-energy electron-positron interaction, and use the resulting effective theory to calculate the binding effects that contribute to the decay rate, Gamma, of orthopositronium, through Order(alpha^3 ln(alpha) Gamma). We express the total decay rate in terms of the annihilation rate for a free electron and positron at threshold, which has just recently been computed to sufficient precision. Our result corrects errors in a previous analysis.

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Richard J. Hill, G. Peter Lepage. 2000-08-10. Order (alpha^2 Gamma, alpha^3 Gamma) Binding Effects in Orthopositronium Decay. https://doi.org/10.1103/physrevd.62.111301

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