Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-09-27
Phys.Rev.A66:022108,2002
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 3 figures, RevTeX
Scientific paper
10.1103/PhysRevA.66.022108
Parity nonconservation due to the nuclear weak charge is considered. We demonstrate that the radiative corrections to this effect due to the vacuum fluctuations of the characteristic size larger than the nuclear radius $r_0$ and smaller than the electron Compton wave-length $\lambda_C$ are enhanced because of the strong electric field of the nucleus. The parameter that allows one to classify the corrections is the large logarithm $\ln(\lambda_C/r_0)$. The vacuum polarization contribution is enhanced by the second power of the logarithm. Although the self-energy and the vertex corrections do not vanish, they contain only the first power of the logarithm. The value of the radiative correction is 0.4% for Cs and 0.9% for Tl, Pb, and Bi. We discuss also how the correction affects the interpretation of the experimental data on parity nonconservation in atoms.
Milstein Alexander I.
Sushkov Oleg P.
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