Improved limit on the permanent electric dipole moment of Hg199

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 Hg199 utilizing a stack of four vapor cells. We find d(Hg199)=(0.49±1.29stat±0.76syst)×10-29 ecm, and interpret this as a new upper bound, |d(Hg199)|<3.1×10-29 ecm (95% C.L.). This result improves our previous Hg199 limit by a factor of 7, and can be used to set new constraints on CP violation in physics beyond the standard model.

Original languageEnglish (US)
Article number101601
JournalPhysical review letters
Volume102
Issue number10
DOIs
StatePublished - Mar 9 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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