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Radiative corrections to parity nonconserving transitions in atoms

Feb, 2003
20 pages
Published in:
  • Phys.Rev.A 67 (2003) 052110
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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 2s1/2−2p1/22s_{1/2}-2p_{1/2} transitions in hydrogenic ions. The QED radiative correction to the matrix element, which is −α/2π-\alpha/2\pi in lowest order, is calculated to all orders in ZαZ\alpha using exact propagators. Previous calculation of the first-order binding correction are confirmed both analytically and by fitting the exact function at low ZZ. Consequences for the interpretation of parity nonconservation in cesium are discussed.