%0 Journal Article
%T Order (alpha^2 Gamma, alpha^3 Gamma) Binding Effects in Orthopositronium Decay
%A Richard J. Hill
%A G. Peter Lepage
%J Physics
%D 2000
%I arXiv
%R 10.1103/PhysRevD.62.111301
%X 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.
%U http://arxiv.org/abs/hep-ph/0003277v3