Dark Matter Search Results from a One Tonne×Year Exposure of XENON1T

2018/05/31 by E. Aprile, J. Aalbers, F. Agostini +116 · 1 voice · 2 citations
Physics and Astronomy · #astro-ph.CO #astro-ph.IM #hep-ex #hep-ph #physics.ins-det

paper · pdf · doi:10.1103/physrevlett.121.111302

published as Phys. Rev. Lett. 121, 111302 (2018) · 8 pages, 5 figures, v2 limit points as csv

arxiv published 2018/05/31 · arxiv created 2018/09/13 · arxiv updated 2018/09/14

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, resulting in a 1.0 t×yr exposure. The energy region of interest, [1.4, 10.6] \mathrmkeV_ee ([4.9, 40.9] \mathrmkeV_nr), exhibits an ultra-low electron recoil background rate of (82\substack+5 -3\textrm (sys)±3\textrm (stat)) events/(t\timesyr×\mathrmkeV_ee). No significant excess over background is found and a profile likelihood analysis parameterized 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 90% confidence level.

Cited by

• Prospects of detecting cosmic ray up-scattered dark matter with DUNE
• MOTION, a liquid xenon time projection chamber platform for high voltage technologies in dark matter detectors

Discussions

• The @Xenon1T paper is out. https://arxiv.org/abs/1805.12562 [bsky, 0 points, 0 comments]

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