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Amaral, D. W.; Aralis, T.; Aramaki, T.; Azadbakht, E.; Banik, S.; Barker, D.; Bathurst, C.; Bauer, D. A.; Bezerra, L. V. S.; Bhattacharyya, R.; Binder, T.; Brink, P. L.; Bunker, R.; Cabrera, B.; Calkins, R.; Cartaro, C.; Cerdeño, D. G.; Chang, Y.-Y.; Chen, R.; Chott, N.; Cooley, J.; Coombes, H.; Cushman, P.; De Brienne, F.; di Vacri, M. L.; Diamond, M. D.; Fascione, E.; Figueroa-Feliciano, E.; Fouts, K.; Fritts, M.; Gerbier, G.; Germond, R.; Ghaith, M.; Golwala, S. R.; Herbert, N.; Hines, B. A.; Hollister, M. I.; Hong, Z.; Hoppe, E. W.; Huber, M. E.; Iyer, V.; Jardin, D.; Jastram, A.; Kelsey, M. H.; Kubik, A.; Kurinsky, N. A.; Lawrence, R. E.; Li, A.; Loer, B.; Lopez Asamar, E.; Lukens, P.; MacDonell, D.; MacFarlane, D. B.; Mahapatra, R.; Mast, N.; Mayer, A. J.; Michaud, É. M.; Michielin, E.; Morales Mendoza, J. D.; Nagorny, S.; Nelson, J.; Novati, V.; Orrell, J. L.; Oser, S. M.; Page, W. A.; Pakarha, P.; Partridge, R.; Podviianiuk, R.; Ponce, F.; Rau, W.; Reid, E.; Ren, R.; Reynolds, T.; Robinson, A. E.; Rogers, H. E.; Saab, T.; Sadoulet, B.; Sander, J.; Sattari, A.; Schnee, R. W.; Scorza, S.; Serfass, B.; Stanford, C.; Stein, M.; Street, J.; Toback, D.; Underwood, R.; Verma, S.; Villano, A. N.; von Krosigk, B.; Watkins, S. L.; Wills, L.; Wilson, M. J.; Winchell, J.; Yellin, S.; Young, B. A.; Zhang, E.; Zhang, H. G.; Zhao, X.; Zheng, L.
Physical review. D, 11/2020, Letnik: 102, Številka: 9Journal Article
This article presents an analysis and the resulting limits on light dark matter inelastically scattering off of electrons, and on dark photon and axionlike particle absorption, using a second-generation SuperCDMS high-voltage eV-resolution detector. The 0.93 g Si detector achieved a 3 eV phonon energy resolution; for a detector bias of 100 V, this corresponds to a charge resolution of 3% of a single electron-hole pair. The energy spectrum is reported from a blind analysis with 1.2 g-days of exposure acquired in an above-ground laboratory. With charge carrier trapping and impact ionization effects incorporated into the dark matter signal models, the dark matter-electron cross section σe is constrained for dark matter masses from 0.5 to 104 MeV / c2; in the mass range from 1.2 to 50 eV / c2 the dark photon kinetic mixing parameter ϵ and the axioelectric coupling constant gae are constrained. The minimum 90% confidence-level upper limits within the above-mentioned mass ranges are σe = 8.7 × 10−34 cm2, ϵ = 3.3 × 10−14, and gae = 1.0 × 10−9.
