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arXiv · 2603.21951

First Limits on Axion Dark Matter from a DALI Prototype

Javier De Miguel·Enrique Joven·Elvio Hernández-Suárez·Juan F. Hernández-Cabrera·Haroldo Lorenzo-Hernández·Dylan Carroll·Roger J. Hoyland·Edgar S. Carlin·Antonios Gardikiotis·Abaz Kryemadhi·J. Daniel Marrero-Falcón·Marios Moroudas·Chiko Otani·J. Alberto Rubiño-Martín·Konstantin Zioutas
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Abstract

We report a pilot dark-matter search with a cryogenic, magnetized, scaled-down DALI prototype. An analysis of 36 hours of data reveals no statistically significant excess attributable to axionlike particles. We therefore set new exclusion limits in the 6.883--6.920 GHz band, reaching an axion-photon coupling sensitivity of $g_{a\gamma\gamma}\lesssim 1.27\times10^{-11}\,\mathrm{GeV}^{-1}$ at 28.54 $\mu$eV. These results consolidate the DALI approach and motivate a next-stage haloscope to explore a broader mass range with upgraded instrumentation.

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Javier De Miguel, Enrique Joven, Elvio Hernández-Suárez, Juan F. Hernández-Cabrera, Haroldo Lorenzo-Hernández, Dylan Carroll, Roger J. Hoyland, Edgar S. Carlin, Antonios Gardikiotis, Abaz Kryemadhi, J. Daniel Marrero-Falcón, Marios Moroudas, Chiko Otani, J. Alberto Rubiño-Martín, Konstantin Zioutas. 2026-03-23. First Limits on Axion Dark Matter from a DALI Prototype. https://arxiv.org/abs/2603.21951

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