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Search for low-mass electron-recoil dark matter using a single-charge sensitive SuperCDMS-HVeV detector

M. F. Albakry1,2, I. Alkhatib3,*, D. Alonso-González4,5, J. Anczarski6, T. Aralis6, T. Aramaki7, I. Ataee Langroudy8, C. Bathurst9, R. Bhattacharyya8 et al. (SuperCDMS Collaboration)

R. Bhattacharyya8, A. J. Biffl8, P. L. Brink6, M. Buchanan3, R. Bunker10, B. Cabrera6,11, R. Calkins12, R. A. Cameron6, C. Cartaro6, D. G. Cerdeño4,5, Y.-Y. Chang13, M. Chaudhuri14, J.-H. Chen8, R. Chen15, N. Chott16, J. Cooley17,12, H. Coombes9, P. Cushman18, R. Cyna3, S. Das14, S. Dharani1, M. L. di Vacri10, M. D. Diamond3, M. Elwan9, S. Fallows18, E. Fascione19,2, E. Figueroa-Feliciano15, S. L. Franzen20, A. Gevorgian21, M. Ghaith22, G. Godden3, J. Golatkar23, S. R. Golwala24, R. Gualtieri15, J. Hall17,25, S. A. S. Harms3, C. Hays15, B. A. Hines21, Z. Hong3, L. Hsu26, M. E. Huber21,27, V. Iyer3, V. K. S. Kashyap14, S. T. D. Keller3, M. H. Kelsey8, K. T. Kennard15, Z. Kromer21, A. Kubik17, N. A. Kurinsky6, M. Lee8, J. Leyva7, B. Lichtenberg23, J. Liu12, Y. Liu18, E. Lopez Asamar4,5, P. Lukens26, R. López Noé4,5, D. B. MacFarlane6, R. Mahapatra8, J. S. Mammo20, N. Mast18, A. J. Mayer2, P. C. McNamara3, H. Meyer zu Theenhausen28, É. Michaud29, E. Michielin28, K. Mickelson21, N. Mirabolfathi8, M. Mirzakhani8, B. Mohanty14, D. Mondal14, D. Monteiro8, J. Nelson18, H. Neog18, V. Novati15,†, J. L. Orrell10, M. D. Osborne8, S. M. Oser1,2, L. Pandey20, S. Pandey18, R. Partridge6, P. K. Patel15, D. S. Pedreros29, W. Peng3, W. L. Perry3, R. Podviianiuk20, M. Potts10, S. S. Poudel16, A. Pradeep6, M. Pyle13,30, W. Rau2,19, R. Ren15,‡, T. Reynolds3, M. Rios4,5, A. Roberts21, A. E. Robinson29, L. Rosado Del Rio9, J. L. Ryan6, T. Saab9, D. Sadek9, B. Sadoulet13,30, S. P. Sahoo8, I. Saikia12, S. Salehi1, J. Sander20, B. Sandoval24, A. Sattari3, B. Schmidt15,§, R. W. Schnee16, B. Serfass13, A. E. Sharbaugh21, R. S. Shenoy24, A. Simchony6, P. Sinervo3, Z. J. Smith6, R. Soni19,2, K. Stifter6, J. Street16, M. Stukel17, H. Sun9,∥, E. Tanner18, N. Tenpas8, D. Toback8, A. N. Villano21, J. Viol23, B. von Krosigk23,28, Y. Wang3, O. Wen24, Z. Williams18, M. J. Wilson1, J. Winchell8, S. Yellin11, B. A. Young31, B. Zatschler25,17,3, S. Zatschler25,17,3, A. Zaytsev28, E. Zhang3,¶, L. Zheng8, A. Zuniga3, and M. J. Zurowski3 (SuperCDMS Collaboration)

  • 1Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
  • 2TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
  • 3Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada
  • 4Departamento de Física Teórica, Universidad Autónoma de Madrid, 28049 Madrid, Spain
  • 5Instituto de Física Teórica UAM-CSIC, Campus de Cantoblanco, 28049 Madrid, Spain
  • 6SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology, Menlo Park, California 94025, USA
  • 7Department of Physics, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, USA
  • 8Department of Physics and Astronomy, and the Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
  • 9Department of Physics, University of Florida, Gainesville, Florida 32611, USA
  • 10Pacific Northwest National Laboratory, Richland, Washington 99352, USA
  • 11Department of Physics, Stanford University, Stanford, California 94305, USA
  • 12Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA
  • 13Department of Physics, University of California, Berkeley, California 94720, USA
  • 14National Institute of Science Education and Research, An OCC of Homi Bhabha National Institute, Jatni 752050, India
  • 15Department of Physics & Astronomy, Northwestern University, Evanston, Illinois 60208-3112, USA
  • 16Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
  • 17SNOLAB, Creighton Mine #9, 1039 Regional Road 24, Sudbury, Ontario P3Y 1N2, Canada
  • 18School of Physics & Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
  • 19Department of Physics, Queen’s University, Kingston, Ontario K7L 3N6, Canada
  • 20Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA
  • 21Department of Physics, University of Colorado Denver, Denver, Colorado 80217, USA
  • 22College of Natural and Health Sciences, Zayed University, Dubai 19282, United Arab Emirates
  • 23Kirchhoff-Institut für Physik, Universität Heidelberg, 69117 Heidelberg, Germany
  • 24Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, California 91125, USA
  • 25Laurentian University, Department of Physics, 935 Ramsey Lake Road, Sudbury, Ontario P3E 2C6, Canada
  • 26Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
  • 27Department of Electrical Engineering, University of Colorado Denver, Denver, Colorado 80217, USA
  • 28Institute for Astroparticle Physics (IAP), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
  • 29Département de Physique, Université de Montréal, Montréal, Québec H3C 3J7, Canada
  • 30Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 31Department of Physics, Santa Clara University, Santa Clara, California 95053, USA

  • *Contact author: imran.alkhatib@mail.utoronto.ca
  • †Present address: LPSC, Centre National de la Recherche Scientifique, Université Grenoble Alpes, Grenoble, France.
  • ‡Present address: Department of Physics, University of Toronto, Toronto, ON M5S 1A7, Canada.
  • §Present address: IRFU, Alternative Energies and Atomic Energy Commission, Université Paris-Saclay, France.
  • ∥Contact author: huanbo21@gmail.com
  • Contact author: enzee.zhang@gmail.com
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Phys. Rev. D 113, 032001 – Published 2 February, 2026

DOI: https://doi.org/10.1103/5lnp-6mng

Abstract

We present constraints on low-mass dark matter electron scattering and absorption interactions using a SuperCDMS high-voltage eV-resolution (HVeV) detector. Data were taken underground in the NEXUS facility located at Fermilab with an overburden of 225 meters of water equivalent. The experiment benefits from the minimizing of luminescence from the printed circuit boards in the detector holder used in all previous HVeV studies. A blind analysis of 6.1  g·days of exposure produces exclusion limits for dark matter-electron scattering cross sections for masses as low as 1  MeV/c2, as well as on the photon-dark photon mixing parameter and the coupling constant between axionlike particles and electrons for particles with masses >1.2  eV/c2 probed via absorption processes.

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Phys. Rev. D 113, 032001– Published 2 February, 2026
  • Received 8 September 2025
  • Accepted 7 January 2026
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