Title

Radiogenic and Muon-Induced Backgrounds in the LUX Dark Matter Detector

Document Type

Article

Publication Date

2014

DOI

10.1016/j.astropartphys.2014.07.009

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/kg/day in a 118-kg fiducial volume. The observed background rate is (3.6±0.4stat)×10^−3 events/keVee/kg/day, consistent with model projections. The expectation for the radiogenic background in a subsequent one-year run is presented.

Comments

Lead author: Daniel S. Akerib

Corresponding author: David Malling

Collaboration: LUX