Measurement of the 6S→7S transition polarizability in atomic cesium and an improved test of the standard model

被引：395

作者：

Bennett, SC ^{[1
]}

Wieman, CE

机构：

[1] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.82.2484

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ratio of the off-diagonal hyperfine amplitude to the tensor transition polarizability (M-hf/beta for the 6S --> 7S transition in cesium has been measured. The value of beta = 27.024(43)(expt) (67)(theor)a(0)(3) is then obtained using an accurate semiempirical value of M-hf. This is combined with a previous measurement of parity nonconservation in atomic cesium and previous atomic structure calculations to determine the value of the weak charge. The uncertainties in the atomic structure calculations are updated land reduced) in light of new experimental tests. The result Q(w) = -72.06(28)(expt)(34)(theor) differs from the prediction of the standard model of elementary particle physics by 2.5 sigma.

引用

页码：2484 / 2487

页数：4

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