Improved limit on the permanent electric dipole moment of 199Hg
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 1.29stat 0.76syst) 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.
0