Constraints on New Vector Boson Mediated Electron-Nucleus Interactions from Spectroscopy Data of Polar Diatomic Molecules
Abstract
A measurement of parity violation in the hyperfine structure of ^{138}Ba^{19}F [E. Altuntaş et al. Phys. Rev. Lett. 120, 142501 (2018)PRLTAO0031-900710.1103/PhysRevLett.120.142501] is reinterpreted with electronic structure calculations in terms of beyond standard model vector boson mediated electron-nucleus interactions. Our results set constraints on previously unexplored, new boson mediated axial vector-vector nucleus-electron interactions. Similar bounds are obtained by analyzing the atomic parity violation experiment with ^{133}Cs. Moreover, we show that future experiments with cold heavy diatomic molecules like ^{137}BaF or ^{225}RaF can improve the present sensitivity to axial vector-vector nucleus-electron and nucleon-nucleus interactions by at least 2 orders of magnitude for large boson masses.
Fields of Study & Subjects
Advanced Chemical Physics Studies
Molecular Spectroscopy and Structure
Fullerene Chemistry and Applications
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 18
- Pages
- 181805–181805
- Publication date
- 30 March 2026
- Language
- EN