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

doi:10.1103/PhysRevLett.102.101601

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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400 Scopus citations

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 language	English (US)
Article number	101601
Journal	Physical review letters
Volume	102
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.102.101601
State	Published - Mar 9 2009

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.102.101601

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title = "Improved limit on the permanent electric dipole moment of Hg199",

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.",

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AU - Griffith, W. C.

AU - Swallows, M. D.

AU - Loftus, T. H.

AU - Romalis, M. V.

AU - Heckel, B. R.

AU - Fortson, E. N.

PY - 2009/3/9

Y1 - 2009/3/9

N2 - 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.

AB - 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.

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Improved limit on the permanent electric dipole moment of Hg199

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