Recent Results on the Electric Dipole of $^{199}$Hg Atoms

The excess of matter over antimatter in the universe requires a source of CP violation beyond that contained in the standard model of particle physics. Electric dipole moment (EDM) measurements of elementary particles and atoms provide a sensitive means to search for CP violation beyond the standard model. Our group has recently reported a new upper limit on the EDM of $^{199}$Hg, four times more sensitive than previous results on $^{199}$Hg. The techniques used in the experiment will be described as well as our major findings and their implications on proposed CP violating parameters.