Fermionic sub-GeV Dark Matter from evaporating Primordial Black Holes at DarkSide-50

Abstract

We present a search for boosted dark matter from Primordial Black Holes (PBH) evaporation using the DarkSide-50 ionization-signal-only dataset corresponding to the experiment's ($12202\pm 180$) $\mathrm{kg}\mathrm{d}$ exposure. We focus on evaporation of PBHs with masses in the range [$10^{14},10^{16}$] g producing Dirac fermionic dark matter particles with sub-GeV kinetic energy. These relativistic particles, with energies up to hundreds of MeV, can generate detectable signals for masses below $\mathcal{O}(100)$ MeV. The absence of a signal enables setting complementary limits to those derived from cosmological observations and direct detection searches for cosmic ray-boosted dark matter.

8 pages, 4 figures

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Cited by in corpus (1)

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