First Direct-Detection Results on Sub-GeV Dark Matter Using the SENSEI Detector at SNOLAB


Por: Adari P., Bloch I.M., Botti A.M., Cababie M., Cancelo G., Cervantes-Vergara B.A., Crisler M., Daal M., Desai A., Drlica-Wagner A., Essig R., Estrada J., Etzion E., Moroni G.F., Holland S.E., Kehat J., Korn Y., Lawson I., Luoma S., Orly A., Perez S.E., Rodrigues D., Saffold N.A., Scorza S., Singal A., Sofo-Haro M., Stefanazzi L., Stifter K., Tiffenberg J., Uemura S., Villalpando E.M., Volansky T., Wu Y., Yu T.-T., Emken T., Xu H.

Publicada: 1 ene 2025
Resumen:
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. © 2025 American Physical Society.

Filiaciones:
Adari P.:
 C.N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, 11794, NY, United States

 Department of Physics and Astronomy, Stony Brook University, Stony Brook, 11794, NY, United States

Bloch I.M.:
 Berkeley Center for Theoretical Physics, University of California, Berkeley, 94720, CA, United States

 Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, 94720, CA, United States

Botti A.M.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Cababie M.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

 Department of Physics, FCEN, University of Buenos Aires, IFIBA, CONICET, Buenos Aires, Argentina

Cancelo G.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Cervantes-Vergara B.A.:
 Universidad Nacional Autónoma de México, Ciudad de México, Mexico

Crisler M.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Daal M.:
 School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, 69978, Israel

Desai A.:
 Department of Physics, Institute for Fundamental Science, University of Oregon, Eugene, 97403, OR, United States

Drlica-Wagner A.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

 Kavli Institute for Cosmological Physics, University of Chicago, Chicago, 60637, IL, United States

 Department of Astronomy and Astrophysics, University of Chicago, Chicago, 60637, IL, United States

Essig R.:
 C.N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, 11794, NY, United States

Estrada J.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Etzion E.:
 School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, 69978, Israel

Moroni G.F.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Holland S.E.:
 Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, 94720, CA, United States

Kehat J.:
 School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, 69978, Israel

Korn Y.:
 School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, 69978, Israel

Lawson I.:
 SNOLAB, Lively, P3Y 1N2, ON, Canada

Luoma S.:
 SNOLAB, Lively, P3Y 1N2, ON, Canada

Orly A.:
 School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, 69978, Israel

Perez S.E.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

 Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, Buenos Aires, Argentina

 CONICET, Universidad de Buenos Aires, Instituto de Física de Buenos Aires (IFIBA), Buenos Aires, Argentina

Rodrigues D.:
 Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, Buenos Aires, Argentina

 CONICET, Universidad de Buenos Aires, Instituto de Física de Buenos Aires (IFIBA), Buenos Aires, Argentina

Saffold N.A.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Scorza S.:
 Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, Grenoble, 38000, France

Singal A.:
 C.N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, 11794, NY, United States

 Department of Physics and Astronomy, Stony Brook University, Stony Brook, 11794, NY, United States

Sofo-Haro M.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

 Universidad Nacional de Córdoba, CNEA, CONICET, Cordoba, Argentina

Stefanazzi L.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Stifter K.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Tiffenberg J.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Uemura S.:
 Fermi National Accelerator Laboratory, Post Office Box 500, Batavia, 60510, IL, United States

Villalpando E.M.:
 Kavli Institute for Cosmological Physics, University of Chicago, Chicago, 60637, IL, United States

Volansky T.:
 School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, 69978, Israel

Wu Y.:
 C.N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, 11794, NY, United States

 Department of Physics and Astronomy, Stony Brook University, Stony Brook, 11794, NY, United States

Yu T.-T.:
 Department of Physics, Institute for Fundamental Science, University of Oregon, Eugene, 97403, OR, United States

Emken T.:
 Oskar Klein Centre, Department of Physics, Stockholm University, Stockholm, SE-10691, Sweden

Xu H.:
 C.N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, 11794, NY, United States

 Department of Physics and Astronomy, Stony Brook University, Stony Brook, 11794, NY, United States
ISSN: 00319007
Editorial
AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA, Estados Unidos America
Tipo de documento: Article
Volumen: 134 Número: 1
Páginas:
WOS Id: 001415973000002
ID de PubMed: 39913736

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