Search for dark photon dark matter in the mass range 41−74 μeV using millimeter-wave receiver and radioshielding box

This is the authors' abstract. We don't add key points for this paper.

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 χ . 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 μeV . We found no conversion photon signal in this range and set the upper limits to χ<(0.5–3.9)×10−10 at a 95% confidence level.