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arXiv · 0901.2328

Improved limit on the permanent electric dipole moment of 199Hg

W. C. Griffith·M. D. Swallows·T. H. Loftus·M. V. Romalis·B. R. Heckel·E. N. Fortson
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Abstract

We report the results of a new experimental search for a permanent electric dipole moment of 199Hg utilizing a stack of four vapor cells. We find d(199Hg) = (0.49 \pm 1.29_stat \pm 0.76_syst) x 10^{-29} e cm, and interpret this as a new upper bound, |d(199Hg)| < 3.1 x 10^{-29} e cm (95% C.L.). This result improves our previous 199Hg limit by a factor of 7, and can be used to set new constraints on CP violation in physics beyond the standard model.

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W. C. Griffith, M. D. Swallows, T. H. Loftus, M. V. Romalis, B. R. Heckel, E. N. Fortson. 2009-03-10. Improved limit on the permanent electric dipole moment of 199Hg. https://doi.org/10.1103/physrevlett.102.101601

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