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arxiv: 2110.01586 · v3 · pith:TYMZC2VBnew · submitted 2021-10-04 · ✦ hep-ph · cond-mat.supr-con· hep-ex· quant-ph

New constraints on dark matter from superconducting nanowires

Yonit Hochberg , Benjamin V. Lehmann , Ilya Charaev , Jeff Chiles , Marco Colangelo , Sae Woo Nam , Karl K. Berggren This is my paper
classification ✦ hep-ph cond-mat.supr-conhep-exquant-ph
keywords darkconstraintsmattersuperconductingelectronsinteractionsnanowiresabsorption
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Superconducting nanowires, a mature technology originally developed for quantum sensing, can be used as a target and sensor with which to search for dark matter interactions with electrons. Here we report on a 180-hour measurement of a tungsten silicide superconducting nanowire device with a mass of 4.3 nanograms. We use this to place new constraints on dark matter--electron interactions, including the strongest terrestrial constraints to date on sub-MeV (sub-eV) dark matter that interacts with electrons via scattering (absorption) processes.

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