Phys. Rev. A 66, 020101(R) (2002) [4 pages]

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

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A. A. Vasilyev, I. M. Savukov, M. S. Safronova^*, and H. G. Berry
Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, Indiana 46556

Received 2 April 2002; published 19 August 2002

We have measured the 6s-7p_1/2,3/2 transition probabilities in atomic cesium using a direct absorption technique. We use our result and other previously measured transition rates to derive an accurate value of the vector transition polarizability β and, consequently, reevaluate 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.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.66.020101

DOI:

10.1103/PhysRevA.66.020101

PACS:

03.65.Ta, 32.80.Ys, 32.10.Dk, 32.70.Cs

^*Present address: Electron and Optical Physics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8410.

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Phys. Rev. A 66, 020101(R) (2002) [4 pages]

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

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