HIGH-PRECISION MEASUREMENT OF PARITY NONCONSERVING OPTICAL-ROTATION IN ATOMIC LEAD

被引：116
作者：
MEEKHOF, DM
VETTER, P
MAJUMDER, PK
LAMOREAUX, SK
FORTSON, EN
机构：
[1] Department of Physics, FM-15, University of Washington, Seattle
来源：
PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 21期
关键词：
D O I：
10.1103/PhysRevLett.71.3442
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have completed a new measurement of parity nonconserving (PNC) optical rotation near the 1.279 mum magnetic dipole absorption line in lead, improving earlier results on this line by a factor of 20. We find the ratio of the PNC E1 amplitude to the Ml amplitude to be R = (-9.86+/-0.12) x 10(-8), consistent with theoretical predictions. Difficulties in the atomic theory of lead presently limit the extent to which our result tests the standard model of electroweak interactions. The amplitude of the nuclear spin-dependent PNC rotation is found to be less than 2 x 10(-2) of the nuclear spin-independent rotation.
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页码：3442 / 3445
页数：4
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