QED radiative corrections to parity nonconservation in heavy atoms.
نویسندگان
چکیده
The self-energy and vertex QED radiative corrections [approximately Zalpha2f(Zalpha)] are shown to give a large negative contribution to the parity nonconserving (PNC) amplitude in heavy atoms. The correction -0.73(20)% found for the 6s-7s PNC amplitude in 133Cs brings the experimental result for this transition into agreement with the standard model. The calculations are based on a new relation that expresses the radiative corrections to the PNC matrix element via corrections to the energy shifts induced by the finite nuclear size.
منابع مشابه
ar X iv : h ep - p h / 02 06 12 4 v 1 1 4 Ju n 20 02 QED radiative corrections to parity nonconservation in heavy atoms
The self-energy and vertex QED radiative corrections (∼ Zα 2 f (Zα)) are shown to give a large negative contribution to the parity nonconserving (PNC) amplitude in heavy atoms. The correction −0.7(2)% found for the 6s − 7s PNC amplitude in 133 Cs brings the experimental result for this transition into agreement with the standard model. The calculations are based on a new identity that expresses...
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عنوان ژورنال:
- Physical review letters
دوره 89 28 Pt 1 شماره
صفحات -
تاریخ انتشار 2002