A new measurement of the 129Xe EDM

Although neutron, atom and molecular EDM measurements have set only upper limits, the motivation for more sensitive searches is stronger than ever. A recent global analysis of EDM results shows that the 95\% CL upper limit of $6\times 10^{-27}$ e-cm for $^{129}$Xe contributes to constraining several CP violating parameters and that improved sensitivity further probes beyond-Standard-Model CP violation. In a new effort using a $^3$He co-magnetometer, the gas mixture is polarized by spin-exchange optical pumping and then transferred to a cell in the FRM-II high-performance magnetically shielded room, where a SQUID magnetometer array measures the spin precession. Recent tests indicate EDM sensitivity $<$ 10$^{-28}$ e-cm in one-day.