Аннотация
A detailed exposition of two-photon decays of P-wave positronium is given to fill an existing gap in the pedagogical literature. Annihilation decay rates of P-wave positronium are negligible compared to the rates of radiative electric dipole transitions to the lower energy S-states. This circumstance makes such decays experimentally inaccessible. However, the situation is different for quarkonium and the experimental and theoretical research of two-photon and two-gluon decays of P-wave quarkonia is a still a flourishing field.
Язык оригинала | английский |
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Страницы (с-по) | 693-700 |
Число страниц | 8 |
Журнал | Canadian Journal of Physics |
Том | 97 |
Номер выпуска | 7 |
DOI | |
Состояние | Опубликовано - июл 2019 |