Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New Boson
Atomic Physics
2022-05-04 v2 High Energy Physics - Experiment
Nuclear Experiment
Nuclear Theory
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 octupole transition of trapped Yb ions. When combined with previous measurements in Yb and very recent measurements in Yb, the data reveal a King plot nonlinearity of up to 240. The trends exhibited by experimental data are explained by nuclear density functional theory calculations with the Fayans functional. We also find, with 4.3 confidence, that there is a second distinct source of nonlinearity, and discuss its possible origin.
Keywords
Cite
@article{arxiv.2201.03578,
title = {Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New Boson},
author = {Joonseok Hur and Diana P. L. Aude Craik and Ian Counts and Eugene Knyazev and Luke Caldwell and Calvin Leung and Swadha Pandey and Julian C. Berengut and Amy Geddes and Witold Nazarewicz and Paul-Gerhard Reinhard and Akio Kawasaki and Honggi Jeon and Wonho Jhe and Vladan Vuletić},
journal= {arXiv preprint arXiv:2201.03578},
year = {2022}
}