New Limit on the Permanent Electric Dipole Moment of Xe 129 Using He 3 Comagnetometry and SQUID Detection
- Sachdeva, N.
- Fan, I.
- Knappe-Grüneberg, S.
- Kuchler, F.
- Liu, T.
- Marino, M.
- Meinel, J.
- Rolfs, K.
- Salhi, Zahir
- Schnabel, A.
- Singh, J. T.
- Stuiber, S.
- Babcock, E.
- Terrano, W. A.
- Trahms, L.
- Voigt, J.
- Burghoff, M.
- Chupp, T. E.
- Degenkolb, S.
- Fierlinger, P.
- Haude, S.
- Kraegeloh, E.
- Kilian, W.
Publication date
January 2019
DOI Publisher
American Physical Society (APS)Abstract
We report results of a new technique to measure the electric dipole moment of 129Xe with 3Hecomagnetometry. Both species are polarized using spin-exchange optical pumping, transferred to ameasurement cell, and transported into a magnetically shielded room, where SQUID magnetometersdetect free precession in applied electric and magnetic elds. The result from a one week measurementcampaign in 2017 and a 2.5 week campaign in 2018, combined with detailed study of systematiceects, is dA(129Xe) = (1:4 6:6stat 2:0syst) 1028 e cm. This corresponds to an upper limit ofjdA(129Xe)j < 1:4 1027 e cm (95% CL), a factor of ve more sensitive than the limit set in 2001
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