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29 March 2024
 
  » arxiv » hep-ph/0405034

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Spectra and decays of pi pi and pi K atoms
J. Schweizer ;
Date 5 May 2004
Journal Eur.Phys.J. C36 (2004) 483-501
Subject hep-ph
AffiliationBern University
AbstractWe 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.
Source arXiv, hep-ph/0405034
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