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arXiv · 2204.03818

Search for 70 μeV Dark Photon Dark Matter with a Dielectrically-Loaded Multi-Wavelength Microwave Cavity

R. Cervantes·G. Carosi·C. Hanretty·S. Kimes·B. H. LaRoque·G. Leum·P. Mohapatra·N. S. Oblath·R. Ottens·Y. Park·G. Rybka·J. Sinnis·J. Yang
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Abstract

Microwave cavities have been deployed to search for bosonic dark matter candidates with masses of a few $μ$eV. However, the sensitivity of these cavity detectors is limited by their volume, and the traditionally-employed half-wavelength cavities suffer from a significant volume reduction at higher masses. ADMX-Orpheus mitigates this issue by operating a tunable, dielectrically-loaded cavity at a higher-order mode, which allows the detection volume to remain large. The ADMX-Orpheus inaugural run excludes dark photon dark matter with kinetic mixing angle $χ> 10^{-13}$ between 65.5 $μ$eV (15.8 GHz) and 69.3 $μ$eV (16.8GHz), marking the highest-frequency tunable microwave cavity dark matter search to date.

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R. Cervantes, G. Carosi, C. Hanretty, S. Kimes, B. H. LaRoque, G. Leum, P. Mohapatra, N. S. Oblath, R. Ottens, Y. Park, G. Rybka, J. Sinnis, J. Yang. 2022-11-09. Search for 70 μeV Dark Photon Dark Matter with a Dielectrically-Loaded Multi-Wavelength Microwave Cavity. https://doi.org/10.1103/physrevlett.129.201301

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