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arXiv · 2408.11009

Improved constraints on exotic interactions between electron and proton in hydrogen

Lei Cong·Filip Ficek·Pavel Fadeev·Dmitry Budker
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Abstract

Atomic spectroscopy can be used to search for new bosons that carry exotic forces between elementary fermions. A comparison of a recent precise measurement [Bullis \textit{et al.}, Phys. Rev. Lett. \textbf{130}, 203001 (2023)] of the hyperfine splitting of the 2S$_{1/2}$ electronic levels of hydrogen and up-to-date bound-state quantum electrodynamics theory yields improved constraints on electron-proton exotic interactions of the dimensionless coupling strengths $g_Ag_A$, $g_pg_p$, and $g_Vg_V$ corresponding to the exchange of a axial-vector, pseudoscalar (axionlike) or vector boson, respectively.

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Lei Cong, Filip Ficek, Pavel Fadeev, Dmitry Budker. 2024-08-20. Improved constraints on exotic interactions between electron and proton in hydrogen. https://doi.org/10.1103/8nyk-sysy

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