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arXiv · 2207.13107

Shining Light on Cosmogenic Axions with Neutrino Experiments

Yanou Cui·Jui-Lin Kuo·Josef Pradler·Yu-Dai Tsai
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Abstract

While most searches for cosmic axions so far focused on their cold relics as (a component of) dark matter, various well-motivated cosmological sources can produce "boosted" axions that remain relativistic today. We demonstrate that existing/upcoming neutrino experiments such as Super-Kamiokande, Hyper-Kamiokande, DUNE, JUNO, and IceCube can probe such energetic axion relics. The characteristic signature is the mono-energetic single photon signal from axion absorption induced by the axion-photon coupling. This proposal offers to cover parameter ranges that are complementary to existing axion searches and provides new opportunities for discovery with neutrino facilities.

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Yanou Cui, Jui-Lin Kuo, Josef Pradler, Yu-Dai Tsai. 2022-07-26. Shining Light on Cosmogenic Axions with Neutrino Experiments. https://doi.org/10.1103/physrevd.106.115024

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