First Direct-Detection Results on Sub-GeV Dark Matter Using the SENSEI Detector at SNOLAB
Stony Brook University · University of California, Berkeley · +18 more institutions
Abstract
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…
Citation impact
- FWCI
- 105.76
- Percentile
- 100%
- References
- 86
Authors
36- PAPrakruth AdariCorresponding
Stony Brook University
- IMItay M. Bloch
University of California, Berkeley, Lawrence Berkeley National Laboratory
- AMAna Martina Botti
Fermi National Accelerator Laboratory
- MCMariano Cababié
Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Fermi National Accelerator Laboratory
- GCGustavo Cancelo
Fermi National Accelerator Laboratory
Topics & keywords
- Physics
- Dark matter
- Detector
- Nuclear physics
- Particle physics
- Optics
- Climate action
Funding
- NSNational Science FoundationAward: 2021780
- UDU.S. Department of EnergyAwards: DE-SC0009854, DE-AC02-07CH11359, DE-AC02-05CH11231
- SFSimons Foundation
- HFHeising-Simons FoundationAward: 79921
- CFCanada Foundation for Innovation
- USUnited States-Israel Binational Science FoundationAward: 2020220
- ISIsrael Science FoundationAward: 1862/21
- AFAzrieli Foundation
- OOOffice of Science
- H2Horizon 2020 Framework Programme
- EREuropean Research Council
- HEHigh Energy Physics
- FFermilab