Abstract
The hadronic atom is studied in the relativistic perturbative approach based on the Bethe-Salpeter equation. The general expression for the atom lifetime is derived. Lowest-order corrections to the relativistic Deser-type formula for the atom lifetime are evaluated within chiral perturbation theory. The lifetime of the atom in the two-loop order of chiral perturbation theory is predicted to be
- Received 18 May 1998
DOI:https://doi.org/10.1103/PhysRevD.58.094024
©1998 American Physical Society