Probing CP violation with the electric dipole moment of atomic mercury
Abstract
The electric dipole moment of atomic 199Hg induced by the nuclear Schiff moment and tensor-pseudotensor electron-nucleus interactions has been calculated. For this, we have developed and employed a novel method based on the relativistic coupled-cluster theory. The results of our theoretical calculations combined with the latest experimental result of 199Hg electric dipole moment, provide new bounds on the T reversal or CP violation parameters θ QCD, the tensor-pseudotensor coupling constant CT and (du - dd). This is the most accurate calculation of these parameters to date. We highlight the the crucial role of electron correlation effects in their interplay with the P,T violating interactions. Our results demonstrate substantial changes in the results of earlier calculations of these parameters which can be attributed to the more accurate inclusion of important correlation effects in the present work.