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Radiogenic and muon-induced backgrounds in the LUX dark matter detector

Akerib, DS; Araujo, HM; Bai, X; Bailey, AJ; Balajthy, J; Bernard, E; Bernstein, A; ... Zhang, C; + view all (2015) Radiogenic and muon-induced backgrounds in the LUX dark matter detector. Astroparticle Physics , 62 pp. 33-46. 10.1016/j.astropartphys.2014.07.009. Green open access

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Abstract

The Large Underground Xenon (LUX) dark matter experiment aims to detect rare low-energy interactions from Weakly Interacting Massive Particles (WIMPs). The radiogenic backgrounds in the LUX detector have been measured and compared with Monte Carlo simulation. Measurements of LUX high-energy data have provided direct constraints on all background sources contributing to the background model. The expected background rate from the background model for the 85.3 day WIMP search run is (2.6±0.2stat±0.4sys)×10-3 events keVee-1kg-1day-1 in a 118 kg fiducial volume. The observed background rate is (3.6±0.4stat)×10-3 events keVee-1kg-1day-1 , consistent with model projections. The expectation for the radiogenic background in a subsequent one-year run is presented.

Type: Article
Title: Radiogenic and muon-induced backgrounds in the LUX dark matter detector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.astropartphys.2014.07.009
Publisher version: https://doi.org/10.1016/j.astropartphys.2014.07.00...
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: LUX; Dark matter; Radioactive background; Material screening; Simulation
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1421704
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