Dark matter may induce an event in an Earth-based detector, and its event rate is predicted to show an annual modulation as a result of the Earth's orbital motion around the Sun. We searched for this modulation signature using the ionization signal of the DarkSide-50 liquid argon time projection chamber. No significant signature compatible with dark matter is observed in the electron recoil equivalent energy range above 40 eVee, the lowest threshold ever achieved in such a search.
Search for dark matter annual modulation with DarkSide-50
Cadoni, M.;Caravati, M.;Cargioli, N.;Devoto, A.;Dordei, F.;Fiorillo, G.;Franco, D.;Galbiati, C.;Li, X.;Longo, G.;Wada, M.;
2024-01-01
Abstract
Dark matter may induce an event in an Earth-based detector, and its event rate is predicted to show an annual modulation as a result of the Earth's orbital motion around the Sun. We searched for this modulation signature using the ionization signal of the DarkSide-50 liquid argon time projection chamber. No significant signature compatible with dark matter is observed in the electron recoil equivalent energy range above 40 eVee, the lowest threshold ever achieved in such a search.
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