A Search for Low-mass Dark Matter via Bremsstrahlung Radiation and the Migdal Effect in SuperCDMS
Creators: name: Albakry, M. F.
name: Alkhatib, I.
name: Alonso, D.
name: Amaral, D. W. P.
name: Aralis, T.
name: Aramaki, T.
name: Arnquist, I. J.
name: Langroudy, I. Ataee
name: Azadbakht, E.
name: Banik, S.
name: Bathurst, C.
name: Bhattacharyya, R.
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: Chaudhuri, M.
name: Chen, R.
name: Chott, N.
name: Cooley, J.
name: Coombes, H.
name: Corbett, J.
name: Cushman, P.
name: Das, S.
name: De Brienne, F.
name: Rios, M.
name: Dharani, S.
name: di Vacri, M. L.
name: Diamond, M. D.
name: Elwan, M.
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: Hall, J.
name: Hassan, N.
name: Hines, B. A.
name: Hong, Z.
name: Hoppe, E. W.
name: Hsu, L.
name: Huber, M. E.
name: Iyer, V.
name: Jardin, D.
name: Kashyap, V. K. S.
name: Kelsey, M. H.
name: Kubik, A.
name: Kurinsky, N. A.
name: Lee, M.
name: Li, A.
name: Litke, M.
name: Liu, J.
name: Liu, Y.
name: Loer, B.
name: Asamar, E. Lopez
name: Lukens, P.
name: MacFarlane, D. B.
name: Mahapatra, R.
name: Mast, N.
name: Mayer, A. J.
name: Theenhausen, H. Meyer zu
name: Michaud, É.
name: Michielin, E.
name: Mirabolfathi, N.
name: Mohanty, B.
name: Nelson, J.
name: Neog, H.
name: Novati, V.
name: Orrell, J. L.
name: Osborne, M. D.
name: Oser, S. M.
name: Page, W. A.
name: Pandey, S.
name: Partridge, R.
name: Pedreros, D. S.
name: Perna, L.
name: Podviianiuk, R.
name: Ponce, F.
name: Poudel, S.
name: Pradeep, A.
name: Pyle, M.
name: Rau, W.
name: Reid, E.
name: Ren, R.
name: Reynolds, T.
name: Roberts, A.
name: Robinson, A. E.
name: Saab, T.
name: Sadek, D.
name: Sadoulet, B.
name: Saikia, I.
name: Sander, J.
name: Sattari, A.
name: Schmidt, B.
name: Schnee, R. W.
name: Scorza, S.
name: Serfass, B.
name: Poudel, S. S.
name: Sincavage, D. J.
name: Sinervo, P.
name: Street, J.
name: Sun, H.
name: Terry, G. D.
name: Thasrawala, F. K.
name: Toback, D.
name: Underwood, R.
name: Verma, S.
name: Villano, A. N.
name: von Krosigk, B.
name: Watkins, S. L.
name: Wen, O.
name: Williams, Z.
name: Wilson, M. J.
name: Winchell, J.
name: Wu, C. -P.
name: Wykoff, K.
name: Yellin, S.
name: Young, B. A.
name: Yu, T. C.
name: Zatschler, B.
name: Zatschler, S.
name: Zaytsev, A.
name: Zhang, E.
name: Zheng, L.
name: Zuniga, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present a new analysis of previously published of SuperCDMS data using a profile likelihood framework to search for sub-GeV dark matter (DM) particles through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering these possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that are undetectable through the DM-nucleon elastic scattering channel, given the energy threshold of current experiments. We exclude DM masses down to $220~\textrm{MeV}/c^2$ at $2.7 \times 10^{-30}~\textrm{cm}^2$ via the bremsstrahlung channel. The Migdal channel search provides overall considerably more stringent limits and excludes DM masses down to $30~\textrm{MeV}/c^2$ at $5.0 \times 10^{-30}~\textrm{cm}^2$.
description: Submitted to PRD