arXiv:hep-ph/9801215·v2·High Energy Physics — Phenomenology
Perturbative framework for the pi(+)pi(-) atom
V. E. Lyubovitskij (JINR, Dubna and Tomsk University)🇷🇺 · E. Z. Lipartia (JINR, Dubna and Tbilisi University)🇷🇺 · A. G. Rusetsky (JINR, Dubna and Tbilisi University)🇷🇺
Abstract
The perturbative framework is developed for the calculation of the pi(+)pi(-) atom characteristics on the basis of the field-theoretical Bethe-Salpeter approach. A closed expression for the first-order correction to the pi(+)pi(-) atom lifetime has been obtained.
Comments: 8 pages, LaTeX-file