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ISSN - 09205632, Nuclear Physics B - Proceedings Supplements, 2006, vol. 162, p. 260-263

Study of hyperfine structure in simple atoms and precision tests of the bound state QED

Karshenboim S. G., Eidelman S. I., Fendel P., Ivanov V. G., Kolachevsky N. N., Shelyuto V. A., Hänsch T. W.

We consider the most accurate tests of bound state QED, precision theory of simple atoms, related to the hyperfine splitting in light hydrogen-like atoms. We discuss the HFS interval of the 1s state in muonium and positronium and of the 2s state in hydrogen, deuterium and helium-3 ion. We summarize their QED theory and pay attention to involved effects of strong interactions. We also consider recent optical measurements of the 2s HFS interval in hydrogen and deuterium. © 2006 Elsevier B.V. All rights reserved.