Magnetic hyperfine structure constants of $^{137}$BaF in the $^2Π_{1/2}$ and $^2Π_{3/2}$ excited states
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866909910031138816 |
|---|---|
| author | Chamorro, Yuly Kogel, Felix Langen, Tim Borschevsky, Anastasia |
| author_facet | Chamorro, Yuly Kogel, Felix Langen, Tim Borschevsky, Anastasia |
| contents | High-precision molecular experiments testing the Standard Model of particle physics require an accurate understanding of the molecular structure at the hyperfine level, both for the control of the molecules and for the interpretation of the results. In this work, we calculate the hyperfine structure constants for the excited states $^2Π_{1/2}$ and $^2Π_{3/2}$ of $^{137}$BaF due to the $^{137}$Ba nucleus. We use the 4-component relativistic Fock-space coupled-cluster method, extrapolating our results to the complete basis set limit. We investigate the effect of the basis sets and electron correlation, and estimate the uncertainty in our final results. Our results are used in the interpretation of the experimental spectroscopy of the hyperfine and rovibrational spectra of BaF, and the planning of laser-cooling schemes for future parity-violating anapole moment measurements [1]. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_12972 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetic hyperfine structure constants of $^{137}$BaF in the $^2Π_{1/2}$ and $^2Π_{3/2}$ excited states Chamorro, Yuly Kogel, Felix Langen, Tim Borschevsky, Anastasia Atomic Physics Chemical Physics High-precision molecular experiments testing the Standard Model of particle physics require an accurate understanding of the molecular structure at the hyperfine level, both for the control of the molecules and for the interpretation of the results. In this work, we calculate the hyperfine structure constants for the excited states $^2Π_{1/2}$ and $^2Π_{3/2}$ of $^{137}$BaF due to the $^{137}$Ba nucleus. We use the 4-component relativistic Fock-space coupled-cluster method, extrapolating our results to the complete basis set limit. We investigate the effect of the basis sets and electron correlation, and estimate the uncertainty in our final results. Our results are used in the interpretation of the experimental spectroscopy of the hyperfine and rovibrational spectra of BaF, and the planning of laser-cooling schemes for future parity-violating anapole moment measurements [1]. |
| title | Magnetic hyperfine structure constants of $^{137}$BaF in the $^2Π_{1/2}$ and $^2Π_{3/2}$ excited states |
| topic | Atomic Physics Chemical Physics |
| url | https://arxiv.org/abs/2506.12972 |