title: Order alpha(2) corrections to the decay rate of orthopositronium
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.
authors.affiliation: Franklin and Marshall College, Lancaster, Pennsylvania 17604, USA.
authors.initials: GS
authors.lastname: Adkins
authors.initials: RN
authors.lastname: Fell
authors.initials: J
authors.lastname: Sapirstein