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

D S Akerib ,D Byram,C Lee,M Horn,E Druszkiewicz,J.R Verbus,N Walsh,C Nehrkorn,C Hall,K O’Sullivan,R Webb,C Silva,A Dobi,F Neves,C Chan,K Kazkaz,T Shutt,C Zhang,K Pech,J Balajthy,T Coffey,A Currie,S Uvarov,L De Viveiros,M Ihm,M Tripathi,M Szydagis,A Bradley,C Flores,S Fiorucci,M Moongweluwan,M Pangilinan,L Reichhart,P Phelps,C.H Faham,C Chiller,R Knoche,D.C Malling,A Lindote,C Ghag,M Woods,X Bai,R J Gaitskell ,I Lopes ,D J Taylor ,P D Parker ,J Möck ,N A Larsen ,Di Huang ,A A Chiller ,H M Araújo ,V M Gehman ,M S Witherell ,K Gibson ,R L Mannino ,J A Morad ,Dongming Mei ,Jeremy Chapman ,A St J Murphy ,S A Hertel ,A J Bailey ,F L H Wolfs ,D R Tiedt ,H N Nelson ,T J Sumner ,R A Ott ,D N Mckinsey ,Adam Bernstein ,B N Edwards ,M Gilchriese ,E K Pease ,E P Bernard ,S B Cahn ,J E Y Dobson ,M C Carmona-Benitez ,V Solovov ,P Sørensen ,J T White ,B P Tennyson ,R G Jacobsen

doi:10.1016/j.astropartphys.2014.07.009

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

D S Akerib , D Byram + Show 78 more

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https://doi.org/10.1016/j.astropartphys.2014.07.009

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Journal: Astroparticle Physics	Publication Date: Jul 22, 2014
Citations: 100	License type: publisher-specific-oa

Affiliation: Case Western Reserve University, University of South Dakota, Imperial College London, Brown University, Providence College, University of Coimbra, University of Edinburgh, University of Maryland, College Park, South Dakota School of Mines and Technology, University of California, Santa Barbara, Lawrence Livermore National Laboratory, Yale University

#Large Underground Xenon #Weakly Interacting Massive Particles + Show 8 more

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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 85.3day WIMP search run is (2.6±0.2stat±0.4sys)×10-3 events keVee-1kg-1day-1 in a 118kg 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.

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