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Dark photon constraints from a 7.139 GHz cavity haloscope experiment
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abstract
The dark photon is a promising candidate for the dark matter which comprises most of the matter in our visible Universe. Via kinetic mixing with the Standard Model it can also be resonantly converted to photons in an electromagnetic cavity, offering novel experimental possibilities for the discovery and study of dark matter. We report the results of a pathfinder dark photon dark matter cavity search experiment performed at Hunan Normal University and the Institute of Physics, Chinese Academy of Sciences, representing the first stage of the APEX (Axion and dark Photon EXperiment) program. Finding no statistically significant excess, we place an upper limit on the kinetic mixing parameter $|\chi|<3.7\times 10^{-13}$ around $m_A\simeq 29.5$ $\mu$eV at 90% confidence level. This result exceeds other constraints on dark photon dark matter in this frequency range by roughly an order of magnitude.
Forward citations
Cited by 3 Pith papers
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Detecting dark matter using optically trapped Rydberg atom tweezer arrays
Rydberg atom tweezer arrays can detect dark-photon dark matter with sensitivity to unexplored parameter space by scanning via Zeeman and diamagnetic shifts under external magnetic fields.
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Searching for Dark Photons with a room-temperature dielectric haloscope
No excess in 904 h of stack-on data yields a 90% CL limit κ < 4.0×10^{-13} for 1.9 eV/c² dark-photon dark matter with a template-calibrated dielectric-CMOS haloscope.
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Resonant enhancement of axion dark matter decay
Resonant cavities enhance axion dark matter decay to two photons via the Purcell effect, offering a competitive search method implementable with pre-existing heterodyne detection schemes.
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