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Sachdeva, N; Fan, I; Babcock, E; Burghoff, M; Chupp, T E; Degenkolb, S; Fierlinger, P; Haude, S; Kraegeloh, E; Kilian, W; Knappe-Grüneberg, S; Kuchler, F; Liu, T; Marino, M; Meinel, J; Rolfs, K; Salhi, Z; Schnabel, A; Singh, J T; Stuiber, S; Terrano, W A; Trahms, L; Voigt, J
Physical review letters, 10/2019, Letnik: 123, Številka: 14Journal Article
We report results of a new technique to measure the electric dipole moment of Xe129 with He3 comagnetometry. Both species are polarized using spin-exchange optical pumping, transferred to a measurement cell, and transported into a magnetically shielded room, where SQUID magnetometers detect free precession in applied electric and magnetic fields. The result from a one week measurement campaign in 2017 and a 2.5 week campaign in 2018, combined with detailed study of systematic effects, is dA(Xe129)=(1.4±6.6stat±2.0syst)×10-28 e cm. This corresponds to an upper limit of |dA(Xe129)|<1.4×10-27 e cm (95% C.L.), a factor of 5 more sensitive than the limit set in 2001.
