Order α ln(1/α) Corrections to Positronium Decays


The logarithmically enhanced α3 ln(1/α) corrections to the paraand orthopositronium decay widths are calculated in the framework of dimensionally regularized nonrelativistic quantum electrodynamics. In the case of parapositronium, the correction is negative, approximately doubles the effect of the leading logarithmic α3 ln(1/α) one, and is comparable to the… (More)


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@inproceedings{Kniehl2000OrderL, title={Order α ln(1/α) Corrections to Positronium Decays}, author={Bernd A. Kniehl and Alexander Penin}, year={2000} }