Radiative Corrections to Parity Nonconserving Transitions in Atoms

Abstract

The matrix element of a bound electron interacting with the nucleus through exchange of a Z boson is studied for the gauge invariant case of $2s_{1/2}-2p_{1/2}$ transitions in hydrogenic ions. The QED radiative correction to the matrix element, which is $-\alpha /2\pi$ in lowest order, is calculated to all orders in $Z\alpha$ using exact propagators. Previous calculation of the first-order binding correction are confirmed both analytically and by fitting the exact function at low $Z$. Consequences for the interpretation of parity nonconservation in cesium are discussed.

arXiv comment20 pages, 4 figures

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• Comment on "New physics constraints from atomic parity violation in 133-Cs"
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