Spectrum and decays of hadronic atoms

Abstract

We describe the spectra and decays of pi pi and pi K atoms within a non-relativistic effective field theory. The evaluations of the energy shifts and widths are performed at next-to-leading order in isospin symmetry breaking. The prediction for the lifetime of the pi K atom in its ground-state yields tau = (3.7 \pm 0.4) * 10^{-15} sec.

To appear in the proceedings of MESON 2004: 8th International Workshop on Meson Production, Properties and Interaction, Cracow, Poland, 4-8 June 2004. 7 pages