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arXiv · 2310.00904

Exclusion of ALP Cogenesis Dark Matter in a Mass Window Above 100 $\mu$eV

Aaron Quiskamp·Ben T. McAllister·Paul Altin·Eugene N. Ivanov·Maxim Goryachev·Michael E. Tobar
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Abstract

We report the results of Phase 1b of The ORGAN Experiment, a microwave cavity haloscope searching for dark matter axions in the $107.42-111.93~\mu$eV mass range. The search excludes axions with two-photon coupling $g_{a\gamma\gamma}\geq 4\times 10^{-12}\, \textrm{GeV}^{-1}$ with $95\%$ confidence interval, setting the best upper bound to date and with the required sensitivity to exclude the axion-like particle cogenesis model for dark matter in this range. This result was achieved using a tunable rectangular cavity, which mitigated several practical issues that become apparent when conducting high mass axion searches, and was the first such axion search to be conducted with such a cavity. It also represents the most sensitive axion haloscope experiment to date in the $\sim100~\mu$eV mass region.

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Aaron Quiskamp, Ben T. McAllister, Paul Altin, Eugene N. Ivanov, Maxim Goryachev, Michael E. Tobar. 2023-10-02. Exclusion of ALP Cogenesis Dark Matter in a Mass Window Above 100 $\mu$eV. https://doi.org/10.1103/physrevlett.132.031601

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