Search for low-mass dark matter via bremsstrahlung radiation and the Migdal effect in SuperCDMS

• DOI: 10.1103/physrevd.107.112013
• Publication Date: 2023-06-30T14:42:55Z
• Authors: M. F. Albakry; I. Alkhatib; D. Alonso-González; D. W. P. Amaral; T. Aralis; T. Aramaki; I. J. Arnquist; I. Ataee Langroudy; E. Azadbakht; S. Banik; C. Bathurst; R. Bhattacharyya; P. L. Brink; R. Bunker; B. Cabrera; R. Calkins; R. A. Cameron; C. Cartaro; D. G. Cerdeño; Y.-Y. Chang; M. Chaudhuri; R. Chen; N. Chott; J. Cooley; H. Coombes; J. Corbett; P. Cushman; S. Das; F. De Brienne; M. Rios; S. Dharani; M. L. di Vacri; M. D. Diamond; M. Elwan; E. Fascione; E. Figueroa-Felic...; C. W. Fink; K. Fouts; M. Fritts; G. Gerbier; R. Germond; M. Ghaith; S. R. Golwala; J. Hall; N. Hassan; B. A. Hines; Z. Hong; E. W. Hoppe; L. Hsu; M. E. Huber; V. Iyer; D. Jardin; V. K. S. Kashyap; M. H. Kelsey; A. Kubik; N. A. Kurinsky; M. Lee; A. Li; M. Litke; J. Liu; Y. Liu; B. Loer; E. Lopez Asamar; P. Lukens; D. B. MacFarlane; R. Mahapatra; J. S. Mammo; N. Mast; A. J. Mayer; H. Meyer zu Theen...; É. Michaud; E. Michielin; N. Mirabolfathi; B. Mohanty; J. Nelson; H. Neog; V. Novati; J. L. Orrell; M. D. Osborne; S. M. Oser; W. A. Page; L. Pandey; S. Pandey; R. Partridge; D. S. Pedreros; L. Perna; R. Podviianiuk; F. Ponce; S. Poudel; A. Pradeep; M. Pyle; W. Rau; E. Reid; R. Ren; T. Reynolds; A. Roberts; A. E. Robinson; T. Saab; D. Sadek; B. Sadoulet; I. Saikia; J. Sander; A. Sattari; B. Schmidt; R. W. Schnee; S. Scorza; B. Serfass; S. S. Poudel; D. J. Sincavage; P. Sinervo; J. Street; H. Sun; G. D. Terry; F. K. Thasrawala; D. Toback; R. Underwood; S. Verma; A. N. Villano; B. von Krosigk; S. L. Watkins; O. Wen; Z. Williams; M. J. Wilson; J. Winchell; C.-P. Wu; K. Wykoff; S. Yellin; B. A. Young; T. C. Yu; B. Zatschler; S. Zatschler; A. Zaytsev; E. Zhang; L. Zheng; A. Zuniga
• Keywords: High Energy Physics - Phenomenology; High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph); Physics; ddc:530; 0103 physical sciences; FOS: Physical sciences; info:eu-repo/classification/ddc/530; 530; 01 natural sciences; High Energy Physics - Experiment

We present a new analysis of previously published SuperCDMS data using 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 channels, experimental sensitivity can be extended DM masses that are undetectable DM-nucleon elastic channel, given energy threshold current experiments. exclude down $220~\textrm{MeV}/c^2$ at $2.7 \times 10^{-30}~\textrm{cm}^2$ via channel. The channel provides overall considerably more stringent limits excludes $30~\textrm{MeV}/c^2$ $5.0 10^{-30}~\textrm{cm}^2$.