First Direct-Detection Results on Sub-GeV Dark Matter Using the SENSEI Detector at SNOLAB
We present the first results from a dark matter search using six Skipper-CCDs in the SENSEI detector operating at SNOLAB. We employ a bias-mitigation technique of hiding approximately 46% of our total data and aggressively mask images to remove backgrounds. Given a total exposure after masking of 100.72 gram-days from well-performing sensors, we observe 55 two-electron events, 4 three-electron events, and no events containing 4-10 electrons. The two-electron events are consistent with pileup from one-electron events. Among the 4 three-electron events, 2 appear in pixels that are likely impacted by detector defects, although not strongly enough to trigger our "hot-pixel" mask. We use these data to set world-leading constraints on sub-GeV dark matter interacting with electrons and nuclei.
Authors
- Darío Rodrigues (ORCID: https://orcid.org/0000-0002-7952-7168)
- Mariano Cababié (ORCID: https://orcid.org/0000-0002-9281-5375)
- M. Daal (ORCID: https://orcid.org/0000-0002-1134-2116)
- Yaron Korn
- N. Saffold (ORCID: https://orcid.org/0000-0001-6358-9228)
- Miguel Sofo-Haro (ORCID: https://orcid.org/0000-0001-9397-2922)
- Leandro Stefanazzi (ORCID: https://orcid.org/0000-0001-9990-1981)
- Ana Martina Botti (ORCID: https://orcid.org/0000-0001-6396-2467)
- Javier Tiffenberg (ORCID: https://orcid.org/0000-0002-1126-2941)
- Aman Singal (ORCID: https://orcid.org/0000-0002-9426-1863)
- E. Etzion (ORCID: https://orcid.org/0000-0001-6871-7794)
- S. Holland (ORCID: https://orcid.org/0000-0001-7218-3457)
- S. Scorza
- Sho Uemura (ORCID: https://orcid.org/0000-0003-3458-4625)
- Timón Emken (ORCID: https://orcid.org/0000-0002-4251-2229)
- Guillermo Fernández Moroni (ORCID: https://orcid.org/0000-0003-4238-6813)
- Brenda A. Cervantes-Vergara (ORCID: https://orcid.org/0000-0002-5305-2491)
- Rouven Essig (ORCID: https://orcid.org/0000-0002-3066-0486)
- Aviv Orly
- Tomer Volansky (ORCID: https://orcid.org/0000-0002-2275-8184)
- Edgar Marrufo Villalpando (ORCID: https://orcid.org/0000-0002-8169-8855)
- Ansh Desai (ORCID: https://orcid.org/0000-0002-5447-8304)
- Itay M. Bloch (ORCID: https://orcid.org/0000-0003-1931-4344)
- A. Drlica-Wagner (ORCID: https://orcid.org/0000-0001-8251-933X)
- Gustavo Cancelo (ORCID: https://orcid.org/0000-0001-6926-4010)
- Prakruth Adari (ORCID: https://orcid.org/0000-0001-9431-3806)
- Steffon Luoma
- Hailin Xu (ORCID: https://orcid.org/0009-0003-2486-0873)
- T. Yu (ORCID: https://orcid.org/0000-0003-4708-809X)
- Santiago Pérez
- Yikai Wu (ORCID: https://orcid.org/0009-0009-8963-2058)
- Ian Lawson
- Kelly Stifter
- J. Estrada
- M. B. Crisler
- Jonathan Kehat
Institutions
- Institut polytechnique de Grenoble (FR)
- Centre National de la Recherche Scientifique (FR)
- Fermi National Accelerator Laboratory (US)
- Lawrence Berkeley National Laboratory (US)
- Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
- Stockholm University (SE)
- Tel Aviv University (IL)
- Universidad Nacional de Córdoba (AR)
- University of Oregon (US)
- Universidad de Buenos Aires (AR)
- University of Chicago (US)
- Institut National de Physique Nucléaire et de Physique des Particules (FR)
- Laboratoire de Physique Subatomique et de Cosmologie (FR)
- Snolab (CA)
- Instituto de Física de Buenos Aires (AR)
- Fundación Ciencias Exactas y Naturales (AR)
- Stony Brook University (US)
- Universidad Nacional Autónoma de México (MX)
- Université Grenoble Alpes (FR)
- University of California, Berkeley (US)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-01-09
- DOI
- https://doi.org/10.1103/physrevlett.134.011804
- Citations
- 64
- Primary Topic
- Dark Matter and Cosmic Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 117.82
Funders
- National Science Foundation
- U.S. Department of Energy
- Simons Foundation
- Heising-Simons Foundation
- Canada Foundation for Innovation
- United States-Israel Binational Science Foundation
- Israel Science Foundation
- Azrieli Foundation
- Office of Science
- Horizon 2020 Framework Programme
- European Research Council
- High Energy Physics
- Fermilab