SENSEI: First Direct-Detection Results on sub-GeV Dark Matter from SENSEI at SNOLAB
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arXiv
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| Natura: | Preprint |
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2023
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| author | SENSEI Collaboration Adari, Prakruth Bloch, Itay M. Botti, Ana M. Cababie, Mariano Cancelo, Gustavo Cervantes-Vergara, Brenda A. Crisler, Michael Daal, Miguel Desai, Ansh Drlica-Wagner, Alex Essig, Rouven Estrada, Juan Etzion, Erez Moroni, Guillermo Fernandez Holland, Stephen E. Kehat, Jonathan Korn, Yaron Lawson, Ian Luoma, Steffon Orly, Aviv Perez, Santiago E. Rodrigues, Dario Saffold, Nathan A. Scorza, Silvia Singal, Aman Sofo-Haro, Miguel Stefanazzi, Leandro Stifter, Kelly Tiffenberg, Javier Uemura, Sho Villalpando, Edgar Marrufo Volansky, Tomer Wu, Yikai Yu, Tien-Tien Emken, Timon Xu, Hailin |
| author_facet | SENSEI Collaboration Adari, Prakruth Bloch, Itay M. Botti, Ana M. Cababie, Mariano Cancelo, Gustavo Cervantes-Vergara, Brenda A. Crisler, Michael Daal, Miguel Desai, Ansh Drlica-Wagner, Alex Essig, Rouven Estrada, Juan Etzion, Erez Moroni, Guillermo Fernandez Holland, Stephen E. Kehat, Jonathan Korn, Yaron Lawson, Ian Luoma, Steffon Orly, Aviv Perez, Santiago E. Rodrigues, Dario Saffold, Nathan A. Scorza, Silvia Singal, Aman Sofo-Haro, Miguel Stefanazzi, Leandro Stifter, Kelly Tiffenberg, Javier Uemura, Sho Villalpando, Edgar Marrufo Volansky, Tomer Wu, Yikai Yu, Tien-Tien Emken, Timon Xu, Hailin |
| contents | 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 to 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_13342 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | SENSEI: First Direct-Detection Results on sub-GeV Dark Matter from SENSEI at SNOLAB SENSEI Collaboration Adari, Prakruth Bloch, Itay M. Botti, Ana M. Cababie, Mariano Cancelo, Gustavo Cervantes-Vergara, Brenda A. Crisler, Michael Daal, Miguel Desai, Ansh Drlica-Wagner, Alex Essig, Rouven Estrada, Juan Etzion, Erez Moroni, Guillermo Fernandez Holland, Stephen E. Kehat, Jonathan Korn, Yaron Lawson, Ian Luoma, Steffon Orly, Aviv Perez, Santiago E. Rodrigues, Dario Saffold, Nathan A. Scorza, Silvia Singal, Aman Sofo-Haro, Miguel Stefanazzi, Leandro Stifter, Kelly Tiffenberg, Javier Uemura, Sho Villalpando, Edgar Marrufo Volansky, Tomer Wu, Yikai Yu, Tien-Tien Emken, Timon Xu, Hailin Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment High Energy Physics - Phenomenology Instrumentation and Detectors 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 to 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. |
| title | SENSEI: First Direct-Detection Results on sub-GeV Dark Matter from SENSEI at SNOLAB |
| topic | Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment High Energy Physics - Phenomenology Instrumentation and Detectors |
| url | https://arxiv.org/abs/2312.13342 |