First Results of the LUX Dark Matter Experiment

M. C. Carmona-Benitez,D. S. Akerib,H. M. Araujo,X. Bai,A. J. Bailey,J. Balajthy,P. Beltrame,E. Bernard,A. Bernstein,A. Bradley,D. Byram,S. B. Cahn,C. Chan,J. J. Chapman,A. A. Chiller,C. Chiller,A. Currie,L. de Viveiros,A. Dobi,J. Dobson,E. Druszkiewicz,B. Edwards,C. H. Faham,S. Fiorucci,C. Flores,R. J. Gaitskell,V. M. Gehman,C. Ghag, K. R. Gibson,M. G. D. Gilchriese,C. Hall,M. Hanhardt,S. Haselschwardt,S. A. Hertel,M. Horn,D. Q. Huang,M. Ihm,R. G. Jacobsen,K. Kazkaz,R. Knoche,N. A. Larsen,C. Lee,B. Lenardo,K. T. Lesko,A. Lindote,M. I. Lopes,D. C. Malling,A. Manalaysay,R. Mannino,D. N. McKinsey,D-M Mei,J. Mock,M. Moongweluwan,J. Morad,A. St J. Murphy,C. Nehrkorn,H. Nelson,F. Neves,R. A. Ott,M. Pangilinan,P. D. Parker,E. K. Pease,K. Pech,P. Phelps,L. Reichhart,T. Shutt,C. Silva,V. N. Solovov,P. Sorensen, K. O'Sullivan,T. J. Sumner,M. Szydagis,D. Taylor,B. Tennyson,D. R. Tiedt,M. Tripathi,L. Tvrznikova,S. Uvarov,J. R. Verbus,N. Walsh,R. Webb,J. T. White,M. S. Witherell,F. L. H. Wolfs,M. Woods,C. Zhang

Nuclear and particle physics proceedings（2016）

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摘要

LUX (Large Underground Xenon) is a dark matter direct detection experiment deployed at the 4850' level of the Sanford Underground Research Facility (SURF) in Lead, SD, operating a 370 kg dual-phase xenon TPC. Results of the first WIMP search run were presented in late 2013, for the analysis of 85.3 live-days with a fiducial volume of 118 kg, taken during the period of April to August 2013. The experiment exhibited a sensitivity to spin-independent WIMP-nucleon elastic scattering with a minimum upper limit on the cross section of 7.6×10−46cm2 at a WIMP mass of 33 GeV/c2, becoming the world's leading WIMP search result, in conflict with several previous claimed hints of discovery.

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关键词

dark matter,WIMP,liquid xenon,time projection chamber

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