Sg. Karshenboim et al., NEXT-TO-LEADING AND HIGHER-ORDER CORRECTIONS TO THE DECAY-RATE OF DIMUONIUM, Physics letters. Section B, 424(3-4), 1998, pp. 397-404
Dimuonium, the bound system of a positive and negative muon, can be tr
eated as a compound neutral particle, whose decay products could be de
tected by established methods of particle physics. We consider the lif
etime, the decay branchings and products of ortho and para states. We
calculate next-to-leading order radiative corrections and find higher
order contributions of relative order alpha(2) within the leading loga
rithmic approximation. (C) 1998 Published by Elsevier Science B.V.