Positronium and muonium hyperfine structure and a new determination of a

Аннотация

Dr. Picasso mentioned our work^ in the opening talk at this Conference when he gave Fulton, Owen and Repko's latest theoretical result for the muonium hyperfine splitting. Actually, this calculation was an afterthought and at the time hardly seemed worth the effort, as the uncertainty in both the measurement and theory for this quantity was so (2) large because of the Ruderman effect' . We primarily were interested in calculating the hyperfine structure of positronium which did not suffer from this limitation. Our interest in positroniurn was motivated by the following considerat ions:-.`