Spectra and decays of pi pi and pi K atoms

Details Spectra and decays of pi pi and pi K atoms Spectra and decays of pi pi and pi K atoms

2004-05-05

arxiv.org/abs/hep-ph/0405034v1

Eur.Phys.J. C36 (2004) 483-501

Physics

High Energy Physics

High Energy Physics - Phenomenology

37 pages, 6 figures

Scientific paper

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. We provide general formulae for all S-states, and discuss the states with angular momentum one in some detail. The prediction for the lifetime of the pi K atom in its ground-state yields tau = (3.7 \pm 0.4) * 10^{-15} sec.

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