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arXiv · hep-ph/0405034

Spectra and decays of pi pi and pi K atoms

J. Schweizer
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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. 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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J. Schweizer. 2004-05-05. Spectra and decays of pi pi and pi K atoms. https://doi.org/10.1140/epjc%2Fs2004-01959-1

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