Demonstration of deuterium's enhanced sensitivity to symmetry violations governed by the Standard-Model Extension
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866916836691410944 |
|---|---|
| author | Nanda, Amit Comparat, Daniel Dulieu, Olivier Lahs, Sebastian Malbrunot, Chloe Nowak, Lilian Simon, Martin C. Widmann, Eberhard |
| author_facet | Nanda, Amit Comparat, Daniel Dulieu, Olivier Lahs, Sebastian Malbrunot, Chloe Nowak, Lilian Simon, Martin C. Widmann, Eberhard |
| contents | We have performed hyperfine spectroscopy of two transitions in ground-state deuterium and searched for violations of \CPT and Lorentz symmetry that would manifest as sidereal variations of the observed transition frequencies. Several non-relativistic proton coefficients of the Standard-Model Extension framework have been addressed. The spin-independent coefficients with momentum power $k$=2,4 are constrained for the first time. Bounds on spin-dependent coefficients are improved by exploiting a sensitivity enhancement originating from the relative momenta of the nucleons in the deuteron. The best previous constraints by hydrogen maser measurements are surpassed by 4 and 14 orders of magnitude for coefficients with $k$=2 and 4, respectively. Furthermore, we find a deuterium zero-field hyperfine splitting of \SI{327.3843549(0.0000028)}{\mega \hertz}. This is in agreement with the literature and presents the most precise in-beam measurement of this quantity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_07473 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Demonstration of deuterium's enhanced sensitivity to symmetry violations governed by the Standard-Model Extension Nanda, Amit Comparat, Daniel Dulieu, Olivier Lahs, Sebastian Malbrunot, Chloe Nowak, Lilian Simon, Martin C. Widmann, Eberhard High Energy Physics - Experiment Atomic Physics We have performed hyperfine spectroscopy of two transitions in ground-state deuterium and searched for violations of \CPT and Lorentz symmetry that would manifest as sidereal variations of the observed transition frequencies. Several non-relativistic proton coefficients of the Standard-Model Extension framework have been addressed. The spin-independent coefficients with momentum power $k$=2,4 are constrained for the first time. Bounds on spin-dependent coefficients are improved by exploiting a sensitivity enhancement originating from the relative momenta of the nucleons in the deuteron. The best previous constraints by hydrogen maser measurements are surpassed by 4 and 14 orders of magnitude for coefficients with $k$=2 and 4, respectively. Furthermore, we find a deuterium zero-field hyperfine splitting of \SI{327.3843549(0.0000028)}{\mega \hertz}. This is in agreement with the literature and presents the most precise in-beam measurement of this quantity. |
| title | Demonstration of deuterium's enhanced sensitivity to symmetry violations governed by the Standard-Model Extension |
| topic | High Energy Physics - Experiment Atomic Physics |
| url | https://arxiv.org/abs/2507.07473 |