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High accuracy calculation of 6s -> 7s parity nonconserving amplitude in Cs

M. G. Kozlov·S. G. Porsev·I. I. Tupitsyn
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Abstract

We calculated the parity nonconserving (PNC) 6s -> 7s amplitude in Cs. In the Dirac-Coulomb approximation our result is in a good agreement with other calculations. Breit corrections to the PNC amplitude and to the Stark-induced amplitude $β$ are found to be -0.4% and -1% respectively. The weak charge of $^{133}$Cs is $Q_W=-72.5 \pm 0.7$ in agreement with the standard model.

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M. G. Kozlov, S. G. Porsev, I. I. Tupitsyn. 2001-04-25. High accuracy calculation of 6s -> 7s parity nonconserving amplitude in Cs. https://doi.org/10.1103/physrevlett.86.3260

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