First Dark Matter Search Results from the Large Underground Xenon (LUX)
  Experiment
  The Large Underground Xenon (LUX) dark matter experiment is operating 1.5 km
underground at the Sanford Underground Research Facility in Lead, South Dakota,
USA. In 2013, the experiment had a WIMP search exposure of 10,091 kg-days over
a period of 85.3 live-days. This first dark matter search placed the world's
most stringent limits on WIMP-nucleon interaction cross-sections over a wide
range of WIMP masses, and is in tension with signal hints of low-mass WIMPs
from DAMA, CoGeNT and CDMS-II Si. LUX will commence a 300 day run in 2014 that
will improve the sensitivity by a factor of 5. Low-energy calibrations obtained
from a neutron double-scattering technique will further constrain and reduce
systematics, particularly for low WIMP masses.
