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Title: First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility

Journal Article · · Physical Review Letters

The Large Underground Xenon (LUX) experiment is a dual-phase xenon time-projection chamber operating at the Sanford Underground Research Facility (Lead, South Dakota). The LUX cryostat was filled for the first time in the underground laboratory in February 2013. We report here results of the first WIMP search data set, taken during the period from April to August 2013, presenting the analysis of 85.3 live days of data with a fiducial volume of 118 kg. A profile-likelihood analysis technique shows our data to be consistent with the background-only hypothesis, allowing 90% confidence limits to be set on spin-independent WIMP-nucleon elastic scattering with a minimum upper limit on the cross section of 7.6 × 1 0 - 46 cm 2 at a WIMP mass of 33 GeV / c 2 . We find that the LUX data are in disagreement with low-mass WIMP signal interpretations of the results from several recent direct detection experiments.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
Contributing Organization:
LUX Collaboration
Grant/Contract Number:
AC02-05CH11231; AC52-07NA27344; FG02-08ER41549; FG02-91ER40688; FG02-95ER40917; FG02-91ER40674; NA0000979; SC0006605
OSTI ID:
1511394
Journal Information:
Physical Review Letters, Vol. 112, Issue 9; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1235 works
Citation information provided by
Web of Science

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