Measurement of the 6s - 7p transition probabilities in atomic cesium and a revised value for the weak charge Q_W

Abstract

We have measured the 6s - 7p_{1/2,3/2} transition probabilities in atomic cesium using a direct absorption technique. We use our result plus other previously measured transition rates to derive an accurate value of the vector transition polarizability βand, consequently, re-evaluate the weak charge Q_W. Our derived value Q_W=-72.65(49) agrees with the prediction of the standard model to within one standard deviation.

4 pages, 2 figures

References in corpus (2)

• High accuracy calculation of 6s -> 7s parity nonconserving amplitude in Cs
• Correlated many-body treatment of Breit interaction with application to cesium atomic properties and parity violation

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