arXiv:hep-ph/9905553·v1·High Energy Physics — Phenomenology
Virtual annihilation contribution to orthopositronium decay rate
Gregory Adkins🇺🇸 · Kirill Melnikov🇩🇪 · Alexander Yelkhovsky🇷🇺
Abstract
Order alpha^2 contribution to the orthopositronium decay rate due to one-photon virtual annihilation is found to be delta Gamma = (alpha/pi)^2 (pi^2 ln(alpha) - 0.8622(9))Gamma_LO.
Comments: 2 pages, no figures