Measurement of parity nonconservation and an anapole moment in cesium

C. S. Wood, S. C. Bennett, D. Cho, B. P. Masterson, J. L. Roberts, C. E. Tanner, C. E. Wieman

Research output: Chapter in Book/Report/Conference proceedingChapter


The amplitude of the parity-nonconserving transition between the 6s and 7s states of cesium was precisely measured with the use of a spin-polarized atomic beam. This measurement gives lm(ElPnc)/β = -1.5935(56) millivolts per centimeter and provides an improved test of the standard model at low energy, including a value for the S parameter of -1.3(3)exp(11)theory. The nuclear spin-dependent contribution was 0.077(11) millivolts per centimeter; this contribution is a manifestation of parity violation in atomic nuclei and is a measurement of the long-sought anapole moment.

Original languageEnglish
Title of host publicationCollected Papers of Carl Wieman
PublisherWorld Scientific Publishing Co.
Number of pages5
ISBN (Electronic)9789812813787
ISBN (Print)9812704159, 9789812704153
Publication statusPublished - 2008 Jan 1

Bibliographical note

Publisher Copyright:
© 2008 by World Scientific Publishing Co. Pte. Ltd. All rights reserved.

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'Measurement of parity nonconservation and an anapole moment in cesium'. Together they form a unique fingerprint.

Cite this