Off-diagonal hyperfine interaction and parity nonconservation in cesium
نویسندگان
چکیده
منابع مشابه
1 5 M ay 2 00 0 Off - Diagonal Hyperfine Interaction and Parity Non - conservation in Cesium
We have performed relativistic many-body calculations of the hyperfine interaction in the 6s and 7s states of Cs, including the off-diagonal matrix element. The calculations were used to determine the accuracy of the semi-empirical formula for the electromagnetic transition amplitude 6s|M 1|7s induced by the hyperfine interaction. We have found that even though the contribution of the many-body...
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The measurement of parity nonconservation (PNC) in atomic cesium is discussed in detail. With a spin-polarized atomic beam, this experiment achieves a fractional uncertainty of 0.35% in the measurement of the PNC amplitude for the transition between the 6S and 7S states of cesium, the lowest uncertainty of atomic PNC to date. By comparing the PNC amplitude on two hyperfine transitions, we measu...
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The amplitude of the parity-nonconserving transition between the 6S and 7S states of cesium was precisely measured with the use of a spin-polarized atomic beam. This measurement gives Im(E1pnc)/beta = -1.5935(56) millivolts per centimeter and provides an improved test of the standard model at low energy, including a value for the S parameter of -1.3(3)exp (11)theory. The nuclear spin-dependent ...
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Parity nonconservation ~PNC! in atoms, described in the standard model of the electroweak interaction by exchange of Z bosons between bound electrons and nuclear quarks, leads to nonvanishing electric-dipole matrix elements between atomic states with the same parity. The dominant part of PNC matrix elements ~arising from the vector nucleon current! is proportional to a conserved weak charge QW ...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2000
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.62.052101