Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session B09: Precision Tests of Physics Laws
10:45 AM–12:33 PM,
Saturday, April 13, 2019
Sheraton
Room: Governor's Square 11
Sponsoring
Units:
GPMFC DAMOP
Chair: Dima Budker, UC-Berkeley/Mainz
Abstract: B09.00001 : JILA’s search for the electron electric dipole moment (eEDM): constraining beyond Standard Model physics and time-varying eEDM*
10:45 AM–10:57 AM
View Presentation Abstract
Presenter:
Tanya S. Roussy
(JILA and University of Colorado, Boulder)
Authors:
Tanya S. Roussy
(JILA and University of Colorado, Boulder)
William B. Cairncross
(JILA and University of Colorado, Boulder)
Daniel N. Gresh
(JILA and University of Colorado, Boulder)
Matthew Grau
(ETH Zurich)
Kevin C. Cossel
(National Institute of Standards and Technology Boulder)
Yan Zhou
(JILA and University of Colorado, Boulder)
Jun Ye
(JILA and National Institute of Standards and Technology Boulder)
Eric A. Cornell
(JILA and National Institute of Standards and Technology Boulder)
We have performed a measurement of the electron’s permanent electric dipole moment (eEDM) using trapped molecular ions polarized in rotating bias fields. Our initial analysis of the data yielded a mean consistent with zero, assuming no time-variation in the signal. We have recently re-analyzed the data to constrain possible oscillations in the signal over eight orders of magnitude in frequency. This re-analysis allows us to constrain the mass of the hypothetical axion, which (if present) would generate an oscillatory signal in the eEDM channel. In this talk, I will review the essence of our measurement as well as our most recent re-analysis.
*This work was supported by the Marsico Foundation, NIST, and the NSF (Grant No. PHY-1125844), as well as the Natural Sciences and Engineering Research Council of Canada.
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