Dark Matter Search Results from a One Ton-Year Exposure of XENON1T
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 ) t o n , resulting in a 1.0 ton yr exposure. The energy region of interest, [1.4 ,10.6 ] keVee ([4.9 ,40.9 ] keVnr ), exhibits an ultralow electron recoil background rate of [82-3+5(syst ) ±3 (stat ) ] events /(t o n yr keVee) . 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 /c2, with a minimum of 4.1 ×10-47 cm2 at 30 GeV /c2 and a 90% confidence level.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 2018
- DOI:
- 10.1103/PhysRevLett.121.111302
- arXiv:
- arXiv:1805.12562
- Bibcode:
- 2018PhRvL.121k1302A
- Keywords:
-
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- Astrophysics - Instrumentation and Methods for Astrophysics;
- High Energy Physics - Experiment;
- High Energy Physics - Phenomenology;
- Physics - Instrumentation and Detectors
- E-Print:
- 8 pages, 5 figures, v2 limit points as csv