Orthopositronium lifetime: analytic results in O(alpha) and O(alpha³ ln(alpha))
Kniehl, Bernd A. · Kotikov, Anatoly V. · Veretin, Oleg L.
Original · EN
We present the O(alpha) and O(alpha³ 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.
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