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 e -27 e cm 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 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 1 e -28 e cm/T^(1/2), where T is the running time in days.
Cite
@article{arxiv.1307.1657,
title = {Advanced Cold Molecule Electron EDM},
author = {ACME Collaboration and Wesley C. Campbell and Cheong Chan and David DeMille and John M. Doyle and Gerald Gabrielse and Yulia V. Gurevich and Paul W. Hess and Nicholas R. Hutzler and Emil Kirilov and Brendon OLeary and Elizabeth S. Petrik and Ben Spaun and Amar C. Vutha},
journal= {arXiv preprint arXiv:1307.1657},
year = {2013}
}
Comments
International Conference for Atomic Physics (ICAP) 2012 proceedings paper. Accepted for publication in the European Physical Journal (EPJ). 13 pages, 5 figures, 3 tables