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Updated: May 24, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Constraints on New Vector Boson Mediated Electron-Nucleus Interactions from Spectroscopy Data of Polar Diatomic
Konstantin Gaul1,2,3, Lei Cong1,2,3, Dmitry Budker1,2,3,4
1Helmholtz Institut Mainz, 55099 Mainz, Germany.
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.
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