Orthopositronium lifetime: analytic results in O(alpha) and O(alpha^3 ln(alpha))

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211338We present the O(alpha) and O(alpha^3 ln(alpha)) corrections to the total decay width of orthopositronium in closed analytic form, in terms of basic transcendental numbers, which can be evaluated numerically to arbitrary precision.9 pages, 1 figureHigh Energy Physics - PhenomenologyOrthopositronium lifetime: analytic results in O(alpha) and O(alpha^3 ln(alpha))text