Advanced cold molecule electron EDM
Abstract
Measurement of a non-zero electric dipole moment (EDM) of the electron within a few orders of magnitude of the current best limit of |d_e| < 1.05 × 10^(−27) e⋅cm [1] would be an indication of physics beyond the Standard Model. The ACME Collaboration is searching for an electron EDM by performing a precision measurement of electron spin precession in the metastable H^3Δ_1 state of thorium monoxide (ThO) using a slow, cryogenic beam. We discuss the current status of the experiment. Based on a data set acquired from 14 hours of running time over a period of 2 days, we have achieved a 1-sigma statistical uncertainty of δd_e = 1 × 10^(−28) e⋅cm/√T, where T is the running time in days.
Additional Information
© 2013 Owned by the authors, published by EDP Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Published online: 30 August 2013.Attached Files
Published - epjconf_icap2012_02004-2.pdf
Accepted Version - 1307.1657.pdf
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Additional details
- Eprint ID
- 81024
- Resolver ID
- CaltechAUTHORS:20170831-132953555
- Created
-
2017-09-05Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Series Name
- EPJ Web of Conferences
- Series Volume or Issue Number
- 57