Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session 2A: 7th Annual GPMFC Workshop on Exploring Physics With Quantum-Enabled Precision Measurement
8:50 AM–5:30 PM,
Monday, May 30, 2022
Room: Grand Ballroom E
Chair: David Hanneke, Amherst; Jacob Taylor
Abstract: 2A.00003 : Evidence of two-source King nonlinearity in spectroscopic fifth-force search in Yb+
9:30 AM–10:00 AM
Presenter:
Diana P. L. Aude Craik
(MIT)
Author:
Diana P. L. Aude Craik
(MIT)
We have measured isotope shifts on three narrow optical transitions, on five spinless isotopes of Yb+. Our latest data, on the highly forbidden 467nm octupole transition between 2S1/2 and 2F7/2, when combined with our previous measurements of quadrupole transitions in Yb+ and recent measurements in neutral Yb, confirm the presence of a King nonlinearity with up 240σ confidence. The data also reveal, with 4.3σ sigma confidence, that this nonlinearity emerges from at least two distinct physical effects.
We identify the main source of nonlinearity as differences in the 4th nuclear charge moment between isotopes, a higher-order nuclear effect that had not previously been probed with high precision. We find that the second source of nonlinearity likely cannot be explained by the expected next largest effect within the standard model, the quadratic field shift. We discuss possible sources for this second nonlinearity and outline how ongoing and future work can elucidate whether it emerges from a new boson.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700