Spectra and decays of $\pi \pi$ and $\pi K$ atoms |
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Authors: | Email author" target="_blank">J?SchweizerEmail author |
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Institution: | (1) Institute for Theoretical Physics, University of Bern, Sidlerstr. 5, 3012 Bern, Switzerland |
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Abstract: | We describe the spectra and decays of
and
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
atom in its ground state yields
s.Received: 9 May 2004, Published online: 23 July 2004 |
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Keywords: | |
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