Search for Dark Photon Dark Matter in the Mass Range 41--74 $\mu\mathrm{eV}$ using Millimeter-Wave Receiver and Radioshielding Box

Author:

S. Adachi, F. Fujinaka, S. Honda, Y. Muto, H. Nakata, Y. Sueno, T. Sumida, J. Suzuki, O. Tajima, H. Takeuchi

Keyword:

High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex)

journal:

date:

2023-08-27 16:00:00

Abstract

Dark photons have been considered potential candidates for dark matter. The dark photon dark matter (DPDM) has a mass and interacts with electromagnetic fields via kinetic mixing with a coupling constant of $\chi$. Thus, DPDMs are converted into ordinary photons at metal surfaces. Using a millimeter-wave receiver set in a radioshielding box, we performed experiments to detect the conversion photons from the DPDM in the frequency range 10--18 GHz, which corresponds to a mass range 41--74 $\mu\mathrm{eV}$. We found no conversion photon signal in this range and set the upper limits to $\chi < (0.5\text{--}3.9) \times 10^{-10}$ at a 95% confidence level.

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