Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New Boson

Hur J, Aude Craik DP, Counts I, Knyazev E, Caldwell L, Leung C, Pandey S, Berengut JC, Geddes A, Nazarewicz W, Reinhard PG, Kawasaki A, Jeon H, Jhe W, Vuletić V (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Physical Review Letters American Physical Society

Book Volume: 128

Article Number: 163201

Journal Issue: 16

DOI: 10.1103/PhysRevLett.128.163201

Abstract

Optical precision spectroscopy of isotope shifts can be used to test for new forces beyond the standard model, and to determine basic properties of atomic nuclei. We measure isotope shifts on the highly forbidden S21/2→F27/2 octupole transition of trapped Yb168,170,172,174,176 ions. When combined with previous measurements in Yb+ and very recent measurements in Yb, the data reveal a King plot nonlinearity of up to 240σ. The trends exhibited by experimental data are explained by nuclear density functional theory calculations with the Fayans functional. We also find, with 4.3σ confidence, that there is a second distinct source of nonlinearity, and discuss its possible origin.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

Massachusetts Institute of Technology (MIT) US United States (USA) (US) University of Colorado at Boulder US United States (USA) (US) University of New South Wales (UNSW) AU Australia (AU) Michigan State University US United States (USA) (US) National Institute of Advanced Industrial Science and Technology / 産業技術総合研究所 (AIST) JP Japan (JP) Seoul National University (SNU) / 서울대학교 KR Korea, Republic of (KR)

How to cite

APA:

Hur, J., Aude Craik, D.P., Counts, I., Knyazev, E., Caldwell, L., Leung, C.,... Vuletić, V. (2022). Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New Boson. Physical Review Letters, 128(16). https://doi.org/10.1103/PhysRevLett.128.163201

MLA:

Hur, Joonseok, et al. "Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New Boson." Physical Review Letters 128.16 (2022).

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