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  • Constraints on Sub-GeV Dark...
    Albuquerque, I F M; Back, H O; Batignani, G; Biery, K; Bottino, B; Budano, F; Cadoni, M; Caminata, A; Canci, N; Candela, A; Caravati, M; Catalanotti, S; Cavalcante, P; Cavuoti, S; Cereseto, R; Cicalò, C; D'Angelo, D; D'Incecco, M; D'Urso, D; De Candia, A; De Deo, M; Di Pietro, G; Dionisi, C; Downing, M; Edkins, E; Fan, A; Fiorillo, G; Fomenko, K; Gabriele, F; Gabrieli, A; Galbiati, C; Ghiano, C; Giganti, C; Giovanetti, G K; Goretti, A M; Guan, M; Gulino, M; Hackett, B R; Hassanshahi, M H; Hosseini, B; Humble, P; Ianni, Al; Ianni, An; Ippolito, V; James, I; Johnson, T N; Keeter, K; Kendziora, C L; Kochanek, I; Korga, G; Lai, M; Li, X; Lissia, M; Loer, B; Longo, G; Ma, Y; Machado, A A; Machulin, I N; Maricic, J; Martoff, C J; Messina, A; Milincic, R; Muratova, V N; Musico, P; Nozdrina, A O; Pandola, L; Pantic, E; Paoloni, E; Pelczar, K; Pelliccia, N; Picciau, E; Poudel, S S; Pugachev, D A; Qian, H; Reinhold, B; Renshaw, A L; Sablone, D; Samoylov, O; Savarese, C; Segreto, E; Shchagin, A; Singh, P N; Smirnov, O; Stanford, C; Suffritti, G B; Suvorov, Y; Tartaglia, R; Tonazzo, A; Trinchese, P; Unzhakov, E V; Vishneva, A; Vogelaar, B; Wada, M; Wang, H; Westerdale, S; Wojcik, M; Xiang, X; Xiao, X; Zhu, C; Zichichi, A

    Physical review letters, 09/2018, Letnik: 121, Številka: 11
    Journal Article

    We present new constraints on sub-GeV dark-matter particles scattering off electrons based on 6780.0 kg d of data collected with the DarkSide-50 dual-phase argon time projection chamber. This analysis uses electroluminescence signals due to ionized electrons extracted from the liquid argon target. The detector has a very high trigger probability for these signals, allowing for an analysis threshold of three extracted electrons, or approximately 0.05 keVee. We calculate the expected recoil spectra for dark matter-electron scattering in argon and, under the assumption of momentum-independent scattering, improve upon existing limits from XENON10 for dark-matter particles with masses between 30 and 100  MeV/c^{2}.