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Kaonium

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Kaonium is an exotic atom consisting of a bound state of a positively-charged and a negatively-charged kaon. Kaonium has not been observed experimentally and is expected to have a short lifetime on the order of 10-18 seconds [1] [2].

References

  1. ^ §10.3, Fundamentals in Hadronic Atom Theory, A. Deloff, River Edge, New Jersey: World Scientific, 2003. ISBN 981-238-371-9.
  2. ^ Lifetime of kaonium, S. Krewald, R. H. Lemmer, and F. P. Sassen, Physical Review D 69, #1 (January 2004), id 016003. doi:10.1103/PhysRevD.69.016003