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arXiv · 2505.13093

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

50 Collaboration·P. Agnes·I. F. Albuquerque·T. Alexander·A. K. Alton·M. Ave·H. O. Back·G. Batignani·K. Biery·V. Bocci·W. M. Bonivento·B. Bottino·S. Bussino·M. Cadeddu·M. Cadoni·R. Calabrese·F. Calaprice·A. Caminata·N. Canci·M. Caravati·N. Cargioli·M. Cariello·M. Carlini·P. Cavalcante·S. Chashin·A. Chepurnov·M. Chianese·D. D'Angelo·S. Davini·S. De Cecco·A. V. Derbin·M. D'Incecco·C. Dionisi·F. Dordei·M. Downing·G. Fiorillo·D. Franco·F. Gabriele·C. Galbiati·C. Ghiano·C. Giganti·G. K. Giovanetti·A. M. Goretti·G. Grilli di Cortona·A. Grobov·M. Gromov·M. Guam·M. Gulino·B. R. Hackett·K. Herner·T. Hessel·F. Hubaut·E. V. Hungerford·A. Ianni·V. Ippolito·K. Keeter·C. L. Kendziora·M. Kimura·I. Kochanek·D. Korablev·G. Korga·A. Kubankin·M. Kuss·M. La Commara·M. Lai·X. Li·M. Lissia·O. Lychagina·I. N. Machulin·L. P. Mapelli·S. M. Mari·J. Maricic·A. Messina·R. Milincic·J. Monroe·M. Morrocchi·V. N. Muratova·P. Musico·A. O. Nozdrina·A. Oleinik·F. Ortica·L. Pagani·M. Pallavicini·L. Pandola·E. Pantic·E. Paoloni·K. Pelczar·N. Pelliccia·S. Piacentini·A. Pocar·M. Poehlmann·S. Pordes·S. S. Poudel·P. Pralavorio·D. Price·F. Ragusa·M. Razeti·A. L. Renshaw·M. Rescigno·J. Rode
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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 ($12202\pm180$) ${\rm kg\: d}$ 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.

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50 Collaboration, P. Agnes, I. F. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, R. Calabrese, F. Calaprice, A. Caminata, N. Canci, M. Caravati, N. Cargioli, M. Cariello, M. Carlini, P. Cavalcante, S. Chashin, A. Chepurnov, M. Chianese, D. D'Angelo, S. Davini, S. De Cecco, A. V. Derbin, M. D'Incecco, C. Dionisi, F. Dordei, M. Downing, G. Fiorillo, D. Franco, F. Gabriele, C. Galbiati, C. Ghiano, C. Giganti, G. K. Giovanetti, A. M. Goretti, G. Grilli di Cortona, A. Grobov, M. Gromov, M. Guam, M. Gulino, B. R. Hackett, K. Herner, T. Hessel, F. Hubaut, E. V. Hungerford, A. Ianni, V. Ippolito, K. Keeter, C. L. Kendziora, M. Kimura, I. Kochanek, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. La Commara, M. Lai, X. Li, M. Lissia, O. Lychagina, I. N. Machulin, L. P. Mapelli, S. M. Mari, J. Maricic, A. Messina, R. Milincic, J. Monroe, M. Morrocchi, V. N. Muratova, P. Musico, A. O. Nozdrina, A. Oleinik, F. Ortica, L. Pagani, M. Pallavicini, L. Pandola, E. Pantic, E. Paoloni, K. Pelczar, N. Pelliccia, S. Piacentini, A. Pocar, M. Poehlmann, S. Pordes, S. S. Poudel, P. Pralavorio, D. Price, F. Ragusa, M. Razeti, A. L. Renshaw, M. Rescigno, J. Rode. 2025-05-19. Fermionic sub-GeV Dark Matter from evaporating Primordial Black Holes at DarkSide-50. https://doi.org/10.1103/zfmd-k11f

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