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First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment.
- Source :
-
Physical review letters [Phys Rev Lett] 2023 Jul 28; Vol. 131 (4), pp. 041002. - Publication Year :
- 2023
-
Abstract
- The LUX-ZEPLIN experiment is a dark matter detector centered on a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility in Lead, South Dakota, USA. This Letter reports results from LUX-ZEPLIN's first search for weakly interacting massive particles (WIMPs) with an exposure of 60 live days using a fiducial mass of 5.5 t. A profile-likelihood ratio analysis shows the data to be consistent with a background-only hypothesis, setting new limits on spin-independent WIMP-nucleon, spin-dependent WIMP-neutron, and spin-dependent WIMP-proton cross sections for WIMP masses above 9 GeV/c^{2}. The most stringent limit is set for spin-independent scattering at 36 GeV/c^{2}, rejecting cross sections above 9.2×10^{-48} cm at the 90% confidence level.
Details
- Language :
- English
- ISSN :
- 1079-7114
- Volume :
- 131
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 37566836
- Full Text :
- https://doi.org/10.1103/PhysRevLett.131.041002