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

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arxiv 1403.1299 v1 pith:Q5WZULVH submitted 2014-03-06 astro-ph.IM physics.ins-det

classification astro-ph.IMphysics.ins-det
keywords backgroundmodelradiogenictextrmbackgroundsdarkdetectorevents
verification ladder T0 review T1 audit T2 compute T3 formal

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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 $(2.6\pm0.2_{\textrm{stat}}\pm0.4_{\textrm{sys}})\times10^{-3}$~events~keV$_{ee}^{-1}$~kg$^{-1}$~day$^{-1}$ in a 118~kg fiducial volume. The observed background rate is $(3.6\pm0.4_{\textrm{stat}})\times10^{-3}$~events~keV$_{ee}^{-1}$~kg$^{-1}$~day$^{-1}$, consistent with model projections. The expectation for the radiogenic background in a subsequent one-year run is presented.

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  1. First direct detection constraint on mirror dark matter kinetic mixing using LUX 2013 data

    hep-ex 2019-08 conditional novelty 6.0 of 10

    A search of 95 live-days of LUX 2013 data finds no mirror dark matter electron recoils, giving 90% confidence upper limits on kinetic mixing for mirror electron temperatures 0.1-0.9 keV and excluding temperatures abov...

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