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

Akerib, DS; Araujo, HM; Bai, X; Bailey, AJ; Balajthy, J; Bedikian, S; Bernard, E; ... Zhang, C; + view all (2014) First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility. Physical Review Letters , 112 (9) , Article 091303. 10.1103/PhysRevLett.112.091303. Green open access

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Abstract

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 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 × 10−46 cm2 at a WIMP mass of 33 GeV=c2. We find that the LUX data are in disagreement with lowmass WIMP signal interpretations of the results from several recent direct detection experiments.

Type: Article
Title: First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.112.091303
Publisher version: http://doi.org/10.1103/PhysRevLett.112.091303
Language: English
Additional information: © 2014 American Physical Society. This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, PHYSICS, MULTIDISCIPLINARY, LARGE-SCALE STRUCTURE, SEARCH, XENON, CANDIDATES
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1415861
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