Vacuum polarization correction to the positronium decay rate

摘要

Correction (approx) (alpha)(sup 2) to the positronium decay rate, induced by one-loop vacuum polarization diagram, are calculated. Their relative values are 0.4468(3)((alpha)/(pi))(sup 2) for para-and 0.960(3)((alpha)/(pi))(sup 2) for orthopositronium. 9 refs., 3 figs., 2 tabs. (Atomindex citation 26:013529)