Improved limit on the permanent electric dipole moment of 199Hg

Details Improved limit on the permanent electric dipole moment of 199Hg Improved limit on the permanent electric dipole moment of 199Hg

2009-01-15

arxiv.org/abs/0901.2328v2

Phys. Rev. Lett. 102, 101601 (2009)

Physics

Atomic Physics

4 pages, 4 figures. additional reference, minor edits in response to reviewer comments

Scientific paper

10.1103/PhysRevLett.102.101601

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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