Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-11-05
Phys.Rev.Lett. 93 (2004) 150401; Erratum-ibid. 94 (2005) 229902
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, RevTeX
Scientific paper
10.1103/PhysRevLett.93.150401
Within a systematic approach based on nonrelativistic quantum electrodynamics (NRQED), we derive the one-loop self-energy correction of order alpha (Zalpha)^4 to the bound-electron g factor. In combination with numerical data, this analytic result improves theoretical predictions for the self-energy correction for carbon and oxygen by an order of magnitude. Basing on one-loop calculations, we obtain the logarithmic two-loop contribution of order alpha^2 (Zalpha)^4 ln[(Zalpha)^-2] and the dominant part of the corresponding constant term. The results obtained improve the accuracy of the theoretical predictions for the 1S bound-electron g factor and influence the value of the electron mass determined from g factor measurements.
Jentschura Ulrich D.
Pachucki Krzysztof
Yerokhin Vladimir A.
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