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arXiv · 2510.21764

A Search for Ultra-Light Vector Dark Matter with a Rotating Torsion Balance

M. P. Ross·E. A. Shaw·C. Gettings·S. K. Apple·I. A. Paulson·J. H. Gundlach
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Abstract

We search for ultra-light vector dark matter interacting with a rotating torsion balance with a baryon minus lepton number composition dipole. Our search spans candidate masses in the ultra-low mass range from 1.3~$\times10^{-22}$ to 1.9~$\times10^{-18}$ eV. We set limits on the coupling strength to baryon minus lepton number for each dark matter candidate reaching a peak sensitivity of $g_{B-L} \leq 9 \times 10^{-26}$.

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M. P. Ross, E. A. Shaw, C. Gettings, S. K. Apple, I. A. Paulson, J. H. Gundlach. 2025-10-13. A Search for Ultra-Light Vector Dark Matter with a Rotating Torsion Balance. https://arxiv.org/abs/2510.21764

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