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Aguilar-Arevalo, A.; Amidei, D.; Baxter, D.; Cancelo, G.; Cervantes Vergara, B. A.; Chavarria, A. E.; Darragh-Ford, E.; de Mello Neto, J. R. T.; D’Olivo, J. C.; Estrada, J.; Gaïor, R.; Guardincerri, Y.; Hossbach, T. W.; Kilminster, B.; Lawson, I.; Lee, S. J.; Letessier-Selvon, A.; Matalon, A.; Mello, V. B. B.; Mitra, P.; Molina, J.; Paul, S.; Piers, A.; Privitera, P.; Ramanathan, K.; Da Rocha, J.; Sarkis, Y.; Settimo, M.; Smida, R.; Thomas, R.; Tiffenberg, J.; Torres Machado, D.; Vilar, R.; Virto, A. L.
Physical review letters, 10/2019, Volume: 123, Issue: 18Journal Article
We report direct-detection constraints on light dark matter particles interacting with electrons. The results are based on a method that exploits the extremely low levels of leakage current of the DAMIC detector at SNOLAB of 2–6×10−22 A cm−2. We evaluate the charge distribution of pixels that collect <10e− for contributions beyond the leakage current that may be attributed to dark matter interactions. Constraints are placed on so-far unexplored parameter space for dark matter masses between 0.6 and 100 MeV c−2. We also present new constraints on hidden-photon dark matter with masses in the range 1.2–30 eV c−2.
