학술논문
New Limit on the Permanent Electric Dipole Moment of $^{129}$Xe using $^{3}$He Comagnetometry and SQUID Detection
Document Type
Working Paper
Author
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.
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Subject
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Abstract
We report results of a new technique to measure the electric dipole moment of $^{129}$Xe with $^3$He 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 $d_A(^{129}\mathrm{Xe}) = (1.4 \pm 6.6_\mathrm{stat} \pm 2.0_\mathrm{syst})\times10^{-28}~e\,\mathrm{cm}$. This corresponds to an upper limit of $|d_A(^{129}\mathrm{Xe})| < 1.4 \times 10^{-27} ~e\,\mathrm{cm}~(95\%~\mathrm{CL})$, a factor of five more sensitive than the limit set in 2001.
Comment: To be published in Physical Review Letters. arXiv admin note: substantial text overlap with arXiv:1902.02864
Comment: To be published in Physical Review Letters. arXiv admin note: substantial text overlap with arXiv:1902.02864