Phys. Rev. Lett. 88, 071805 (2002) [4 pages]

New Limit on the Electron Electric Dipole Moment

Abstract

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B. C. Regan^*, Eugene D. Commins^†, Christian J. Schmidt^‡, and David DeMille^§
Physics Department, University of California, Berkeley, California 94720 and Lawrence Berkeley National Laboratory, Berkeley, California 94720

Received 8 August 2001; published 1 February 2002

We present the result of our most recent search for T violation in ²⁰⁵Tl, which is interpreted in terms of an electric dipole moment of the electron d_e. We find d_e = (6.9±7.4)×10^-28ecm, which yields an upper limit |d_e|≤1.6×10^-27ecm with 90% confidence. The present apparatus is a major upgrade of the atomic beam magnetic-resonance device used to set the previous limit on d_e.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.88.071805

DOI:

10.1103/PhysRevLett.88.071805

PACS:

13.40.Em, 11.30.Er, 14.60.Cd, 32.10.Dk

^*Electronic address: regan@physics.berkeley.edu

^†Electronic address: commins@physics.berkeley.edu

^‡Electronic address: christian.j.schmidt@de.abb.com

^§Electronic address: david.demille@yale.edu

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Phys. Rev. Lett. 88, 071805 (2002) [4 pages]

New Limit on the Electron Electric Dipole Moment