Constraints on low-mass, relic dark matter candidates from a surface-operated SuperCDMS single-charge sensitive detector
Creators: name: SuperCDMS Collaboration
name: Amaral, D. W.
name: Aralis, T.
name: Aramaki, T.
name: Arnquist, I. J.
name: Azadbakht, E.
name: Banik, S.
name: Barker, D.
name: Bathurst, C.
name: Bauer, D. A.
name: Bezerra, L. V. S.
name: Bhattacharyya, R.
name: Binder, T.
name: Bowles, M. A.
name: Brink, P. L.
name: Bunker, R.
name: Cabrera, B.
name: Calkins, R.
name: Cameron, R. A.
name: Cartaro, C.
name: Cerdeño, D. G.
name: Chang, Y. -Y.
name: Chen, R.
name: Chott, N.
name: Cooley, J.
name: Coombes, H.
name: Corbett, J.
name: Cushman, P.
name: De Brienne, F.
name: di Vacri, M. L.
name: Diamond, M. D.
name: Fascione, E.
name: Figueroa-Feliciano, E.
name: Fink, C. W.
name: Fouts, K.
name: Fritts, M.
name: Gerbier, G.
name: Germond, R.
name: Ghaith, M.
name: Golwala, S. R.
name: Harris, H. R.
name: Herbert, N.
name: Hines, B. A.
name: Hollister, M. I.
name: Hong, Z.
name: Hoppe, E. W.
name: Hsu, L.
name: Huber, M. E.
name: Iyer, V.
name: Jardin, D.
name: Jastram, A.
name: Kelsey, M. H.
name: Kubik, A.
name: Kurinsky, N. A.
name: Lawrence, R. E.
name: Li, A.
name: Loer, B.
name: Asamar, E. Lopez
name: Lukens, P.
name: MacDonell, D.
name: MacFarlane, D. B.
name: Mahapatra, R.
name: Mandic, V.
name: Mast, N.
name: Mayer, A. J.
name: Michaud, É. M.
name: Michielin, E.
name: Mirabolfathi, N.
name: Mohanty, B.
name: Mendoza, J. D. Morales
name: Nagorny, S.
name: Nelson, J.
name: Neog, H.
name: Novati, V.
name: Orrell, J. L.
name: Oser, S. M.
name: Page, W. A.
name: Pakarha, P.
name: Partridge, R.
name: Podviianiuk, R.
name: Ponce, F.
name: Poudel, S.
name: Pyle, M.
name: Rau, W.
name: Reid, E.
name: Ren, R.
name: Reynolds, T.
name: Roberts, A.
name: Robinson, A. E.
name: Rogers, H. E.
name: Saab, T.
name: Sadoulet, B.
name: Sander, J.
name: Sattari, A.
name: Schnee, R. W.
name: Scorza, S.
name: Serfass, B.
name: Sincavage, D. J.
name: Stanford, C.
name: Stein, M.
name: Street, J.
name: Toback, D.
name: Underwood, R.
name: Verma, S.
name: Villano, A. N.
name: von Krosigk, B.
name: Watkins, S. L.
name: Wills, L.
name: Wilson, J. S.
name: Wilson, M. J.
name: Winchell, J.
name: Wright, D. H.
name: Yellin, S.
name: Young, B. A.
name: Yu, T. C.
name: Zhang, E.
name: Zhang, H. G.
name: Zhao, X.
name: Zheng, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: This article presents an analysis and the resulting limits on light dark matter inelastically scattering off of electrons, and on dark photon and axion-like particle absorption, using a second-generation SuperCDMS high-voltage eV-resolution detector. The 0.93 gram 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 gram-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 $\barσ_{e}$ is constrained for dark matter masses from 0.5--$10^{4} $MeV$/c^{2}$; in the mass range from 1.2--50 eV$/c^{2}$ the dark photon kinetic mixing parameter $\varepsilon$ and the axioelectric coupling constant $g_{ae}$ are constrained. The minimum 90% confidence-level upper limits within the above mentioned mass ranges are $\barσ_{e}\,=\,8.7\times10^{-34}$ cm$^{2}$, $\varepsilon\,=\,3.3\times10^{-14}$, and $g_{ae}\,=\,1.0\times10^{-9}$.
description: 5 pages + title and references, 3 figures and 1 table