Physical Review Letters· 2018Q1
Dark Matter Search Results from a One Ton-Year Exposure of XENON1T
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- 2018year
Short summary
The XENON1T experiment, with a 1.0 ton-year exposure, found no significant excess of WIMP-like events, setting new limits on dark matter interactions.
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Key points
- XENON1T achieved a 1.0 ton-year exposure using a liquid xenon time projection chamber.
- An ultralow electron recoil background rate of 82 events/(ton yr keV_ee) was measured.
- No significant excess of WIMP-like events was observed.
- New limits were set, excluding WIMP-nucleon spin-independent cross sections above 4.1×10⁻⁴⁷ cm² for WIMP masses > 6 GeV/c².
AI-generated from the title and abstract; the full text is not read.
Abstract
We report on a search for weakly interacting massive particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS. XENON1T utilizes a liquid xenon time projection chamber with a fiducial mass of (1.30±0.01) ton, resulting in a 1.0 ton yr exposure. The energy region of interest, [1.4,10.6] keV_{ee} ([4.9,40.9] keV_{nr}), exhibits an ultralow electron recoil background rate of [82_{-3}^{+5}(syst)±3(stat)] events/(ton yr keV_{ee}). No significant excess over background is found, and a profile likelihood analysis parametrized in spatial and energy dimensions excludes new parameter space for the WIMP-nucleon spin-independent elastic scatter cross section for WIMP masses above 6 GeV/c^{2}, with a minimum of 4.1×10^{-47} cm^{2} at 30 GeV/c^{2} and a 90% confidence level.
The authors' abstract, as published at the source. Physical Review Letters, 2018 · DOI ↗
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Field: Nuclear and High Energy Physics
Nuclear and High Energy PhysicsPhysics and Astronomy