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SENSEI: First Direct-Detection Results on sub-GeV Dark Matter from SENSEI at SNOLAB
- Publication Year :
- 2023
-
Abstract
- We present the first results from a dark matter search using six Skipper-CCDs in the SENSEI detector operating at SNOLAB. With an exposure of 534.9 gram-days from well-performing sensors, we select events containing 2 to 10 electron-hole pairs. After aggressively masking images to remove backgrounds, 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.<br />Comment: 5 pages, 2 figures, + Supplemental Materials (5 pages, 5 figures) + References
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2312.13342
- Document Type :
- Working Paper