Calculation of the nuclear spin-dependent parity-nonconserving amplitude for the(7s,F=4)→(7s,F=5)transition inFr
نویسندگان
چکیده
منابع مشابه
High-precision calculation of the parity-nonconserving amplitude in francium
A high-precision calculation of the 7s-8s parity-nonconserving ~PNC! transition amplitude in francium, based on a relativistic all-order method, is presented. Our values for the PNC amplitudes in Fr and Fr are EPNC515.41(17) and 14.02(15), respectively, in units 10 iueua0(2QW /N), where QW is the weak charge and N is the neutron number. Spin-dependent contributions to the PNC amplitude are calc...
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I. I. Tupitsyn Institute of Physics, St. Petersburg State University, Uljanovskaya 1, Petrodvorets, 198504 St. Petersburg, Russia (Received 9 January 2001) We calculated the parity-nonconserving (PNC) 6s ! 7s amplitude in Cs. In the Dirac-Coulomb approximation our result is in good agreement with other calculations. Breit corrections to the PNC amplitude and to the Stark-induced amplitude b are...
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The anapole moment is a parity-odd and time-reversal-even electromagnetic moment. Although it was conjectured shortly after the discovery of parity nonconservation, its existence has not been confirmed until recently in heavy nuclear systems, which are known to be the suitable laboratories because of the manybody enhancement. By carefully identifying the nuclear-spin-dependent atomic parity non...
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An IUCF-LANL-Princeton collaboration has been formed to measure the weak mixing between single-particle states in 207~b.132 The experiment was originally motivated by recent measurements at the Los Alamos Neutron Scattering Center by the TRIPLE c~l labora t ion .~ '~ As discussed below, it is now understood that the experiment has the potential of measuring the isoscaler weak amplitude in n ~ c...
متن کاملVacuum-polarization corrections to the parity-nonconserving 6s-7s transition amplitude in (133)Cs.
The dominant one-loop radiative corrections to atomic wave functions, those associated with vacuum polarization in the nuclear Coulomb field, are evaluated for the 6s-7s parity-nonconserving transition amplitude in (133)Cs. These corrections increase the size of this amplitude by 0.4% and, correspondingly, increase the difference between the experimental value of the weak charge Q(W)((133)Cs) a...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2001
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.64.064101