Improved limit on the permanent electric dipole moment of 199Hg.
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+/-1.29_{stat}+/-0.76_{syst})x10;{-29} e cm, and interpret this as a new upper bound, |d(199Hg)|<3.1x10;{-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.
Griffith
W C
WC
Department of Physics, University of Washington, Seattle, Washington 98195, USA.
Swallows
M D
MD
Loftus
T H
TH
Romalis
M V
MV
Heckel
B R
BR
Fortson
E N
EN