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Order alpha(2) corrections to the decay rate of orthopositronium
Adkins1, Fell, Sapirstein
1Franklin and Marshall College, Lancaster, Pennsylvania 17604, USA.
Physical Review Letters
|September 16, 2000
Abstract:
Order alpha(2) corrections to the decay rate of orthopositronium are calculated in the framework of nonrelativistic QED. The resulting contribution is found to be in significant disagreement with one set of experimental measurements, though another experiment is in agreement with theory.