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A torsion-balance search for ultra low-mass bosonic dark matter

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arxiv 2109.08822 v2 pith:IKNJT5P3 submitted 2021-09-18 astro-ph.CO gr-qc

classification astro-ph.COgr-qc
keywords low-masssearchultrabosonicbosonsdarkmattertimes
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abstract

We used a stationary torsion balance with a beryllium-aluminum composition dipole to search for ultra low-mass bosonic dark matter coupled to baryon minus lepton number. We set 95% confidence limits on the coupling constant $g_{\rm B-L}$ for bosons with masses between $10^{-18}$ and $10^{-16}$ eV/$c^2$ with the best performance at $m_{\rm DM} = 8\times 10^{-18}$ eV/$c^2$ constraining $g_{B-L}(\hbar c)^{-1/2} < 1 \times 10^{-25}$. This provides a complimentary limit to equivalence-principle experiments that search for ultra low-mass bosons as force-mediating particles.

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Cited by 3 Pith papers

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    hep-ph 2025-07 unverdicted novelty 5.0 of 10

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    hep-ph 2023-11 unverdicted novelty 2.0 of 10

    A review deriving couplings, noise spectra, SNRs, and quantum techniques like squeezing for detectors in dark matter, GW, and mechanical sensor experiments.

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