Second-order hyperfine structure and its impact on new physics searches using isotope shift spectroscopy
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866916804336549888 |
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| author | Berengut, Julian C. Oreshkina, Natalia S. |
| author_facet | Berengut, Julian C. Oreshkina, Natalia S. |
| contents | Recent precision isotope shift spectroscopy experiments have reported King plot non-linearities that may uncover previously hidden nuclear properties or hint at new force-carrying bosons. Interpreting the data requires many isotope pairs, but sufficient stable spin-zero nuclei are not always available. In this paper we consider the use of isotopes with non-zero nuclear spin for these studies. We confirm that observed King plot non-linearity in strontium is explained by second-order hyperfine shift in the fermionic nucleus, and we discuss the limitations of using Yb isotopes with non-zero spin in King plot studies. By introducing a specific difference of two isotopes with nuclear spin, we allow for a promising addition to future experimental schemes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_01530 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Second-order hyperfine structure and its impact on new physics searches using isotope shift spectroscopy Berengut, Julian C. Oreshkina, Natalia S. Atomic Physics Recent precision isotope shift spectroscopy experiments have reported King plot non-linearities that may uncover previously hidden nuclear properties or hint at new force-carrying bosons. Interpreting the data requires many isotope pairs, but sufficient stable spin-zero nuclei are not always available. In this paper we consider the use of isotopes with non-zero nuclear spin for these studies. We confirm that observed King plot non-linearity in strontium is explained by second-order hyperfine shift in the fermionic nucleus, and we discuss the limitations of using Yb isotopes with non-zero spin in King plot studies. By introducing a specific difference of two isotopes with nuclear spin, we allow for a promising addition to future experimental schemes. |
| title | Second-order hyperfine structure and its impact on new physics searches using isotope shift spectroscopy |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2409.01530 |