Calculation of radiative corrections to the effect of parity nonconservation in heavy atoms
- Budker Institute of Nuclear Physics, 630090 Novosibirsk (Russian Federation)
We calculate the self-energy and the vertex radiative corrections to the effect of parity nonconservation in heavy atoms. The sum of the corrections is of the form A ln({lambda}{sub C}/r{sub 0})+B, where A and B are functions of Z{alpha}, and {lambda}{sub C} and r{sub 0} are the Compton wavelength and the nuclear radius, respectively. The function A is calculated exactly in Z{alpha} and the function B is calculated in the leading order. In the leading order A{proportional_to}{alpha}(Z{alpha}){sup 2} and B{proportional_to}{alpha}(Z{alpha}). The sum of the corrections is -0.85% for Cs and -1.48% for Tl. Using these results, we have performed an analysis of the experimental data on atomic parity nonconservation. The values obtained for the nuclear weak charge, Q{sub W}=-72.81(28){sub expt}(36){sub theor} for Cs and Q{sub W}=-116.8(1.2){sub expt}(3.4){sub theor} for Tl, agree with the predictions of the standard model within 0.6{sigma}. As an application of our approach we have also calculated the dependence of the Lamb shift on the finite nuclear size.
- OSTI ID:
- 20636516
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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