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arXiv · 2404.05065

Axion-mediated electron-nucleus and electron-electron interactions in barium monofluoride molecule

Sergey D. Prosnyak·Leonid V. Skripnikov
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Abstract

The effects induced by the time-reversal ($\mathcal{T}$) and spatial parity ($\mathcal{P}$) violating electron-nucleus and electron-electron interactions mediated by the axion-like particles (ALPs) in the BaF molecule were estimated. Molecular parameters characterizing these interactions were calculated across a wide range of ALP masses. In case of the electron-nuclear interaction, the effect of the extended nucleus was studied and shown to be significant for heavy ALPs. Based on the calculated molecular parameters, we obtained a link between the $\mathcal{T}$,$\mathcal{P}$-violating energy shift which can be measured in the ongoing experiment designed to search for the electron electric dipole moment using the BaF molecule [A. Boeschoten et al., arXiv:2303.06402 (2023)] and the products of coupling constants of the ALP-electron or ALP-electron and ALP-nucleus interactions.

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Sergey D. Prosnyak, Leonid V. Skripnikov. 2024-04-07. Axion-mediated electron-nucleus and electron-electron interactions in barium monofluoride molecule. https://doi.org/10.1103/physreva.109.042821

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