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arXiv · 2402.00941

Detecting Boosted Dark Photons with Gaseous Detectors

Michael L. Graesser·R. Andrew Gustafson·Kate Hildebrandt·Varun Mathur·Ian M. Shoemaker
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Abstract

We search for indirect signals of $\mathscr{O}$(keV) dark matter annihilating or decaying into $\mathscr{O}$(eV) dark photons. These dark photons will be highly boosted and have decay lengths larger than the Milky Way, and can be absorbed by neutrino or dark matter experiments at a rate dependent on the photon-dark photon kinetic mixing parameter and the optical properties of the experiment. We show that current experiments can not probe new parameter space, but future large-scale gaseous detectors with low backgrounds (i.e. CYGNUS, NEXT, PANDAX-III) may be sensitive to this signal when the annihilation cross section is especially large.

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Michael L. Graesser, R. Andrew Gustafson, Kate Hildebrandt, Varun Mathur, Ian M. Shoemaker. 2024-05-22. Detecting Boosted Dark Photons with Gaseous Detectors. https://doi.org/10.1103/physrevd.109.095015

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