Perturbation theory for the π+π− atom
- 1 December 1997
- journal article
- Published by Pleiades Publishing Ltd in JETP Letters
- Vol. 66 (12) , 783-788
- https://doi.org/10.1134/1.567598
Abstract
A perturbation-theory framework is developed for calculation of the characteristics of the atom π +π− on the basis of the field-theoretic Bethe-Salpeter approach. A closed expression is obtained for the first-order correction to the lifetime of the π+π− atom.Keywords
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