dorsal/arxiv
View SchemaExcluding Hypothetical Light Boson Interpretation of Yb King Plot Nonlinearity with the ${}^1S_0 \leftrightarrow {}^3P_2$ Isotope Shift Measurement
| Authors | Taiki Ishiyama, Koki Ono, Reiji Asano, Hokuto Kawase, Tetsushi Takano, Ayaki Sunaga, Yasuhiro Yamamoto, Minoru Tanaka, Yoshiro Takahashi |
|---|---|
| Categories | |
| ArXiv ID | 2601.08487vv1 |
| URL | https://arxiv.org/abs/2601.08487 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
We present precision spectroscopy and isotope shift measurement of the ${}^1S_0 \leftrightarrow {}^3P_2$ clock transition in neutral ytterbium ($\mathrm{Yb}$) atoms. By revealing a magic wavelength at $905.4(2)$ nm, we successfully achieve the atomic spectrum narrower than $100$ Hz. The interleaved clock operation between isotopes allows us to determine isotope shifts of four bosonic isotope pairs at Hz-level uncertainties, which is combined with those of other four ultra-narrow transitions in $\mathrm{Yb}$ and $\mathrm{Yb}^+$ to construct the King plot. Importantly, the new isotope shift data reported in this work is a key to exclude the possibility of attributing the observed nonlinearity of the three-dimensional King plot solely to the new physics, while the previous works rely on the other terrestrial bound set by the neutron scattering and $(g-2)_e$ measurements. This work paves the way for the effective use of precision isotope shift data in the King plot analysis and stimulates further measurements in $\mathrm{Yb}$ and other elements.
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"abstract": "We present precision spectroscopy and isotope shift measurement of the ${}^1S_0 \\leftrightarrow {}^3P_2$ clock transition in neutral ytterbium ($\\mathrm{Yb}$) atoms. By revealing a magic wavelength at $905.4(2)$ nm, we successfully achieve the atomic spectrum narrower than $100$ Hz. The interleaved clock operation between isotopes allows us to determine isotope shifts of four bosonic isotope pairs at Hz-level uncertainties, which is combined with those of other four ultra-narrow transitions in $\\mathrm{Yb}$ and $\\mathrm{Yb}^+$ to construct the King plot. Importantly, the new isotope shift data reported in this work is a key to exclude the possibility of attributing the observed nonlinearity of the three-dimensional King plot solely to the new physics, while the previous works rely on the other terrestrial bound set by the neutron scattering and $(g-2)_e$ measurements. This work paves the way for the effective use of precision isotope shift data in the King plot analysis and stimulates further measurements in $\\mathrm{Yb}$ and other elements.",
"arxiv_id": "2601.08487",
"authors": [
"Taiki Ishiyama",
"Koki Ono",
"Reiji Asano",
"Hokuto Kawase",
"Tetsushi Takano",
"Ayaki Sunaga",
"Yasuhiro Yamamoto",
"Minoru Tanaka",
"Yoshiro Takahashi"
],
"categories": [
"physics.atom-ph",
"hep-ex",
"hep-ph",
"nucl-ex"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Excluding Hypothetical Light Boson Interpretation of Yb King Plot Nonlinearity with the ${}^1S_0 \\leftrightarrow {}^3P_2$ Isotope Shift Measurement",
"url": "https://arxiv.org/abs/2601.08487",
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