New results from the LUX Dark Matter experiment

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. LUX has already proved itself to be the most sensitive dark matter detector in the world. Now, we report the results of a new analysis of the data collected during LUX's first three-month run in 2013, dramatically improving our sensitivity in the low WIMP-mass range. The new analysis lowers the analysis threshold for dark matter search thanks to two new calibrations: an injected tritium $\beta$ source, and a neutron generator providing tagged nuclear recoils down to $1.1\,\mathrm{keV}$. It also includes advances on the single-photon calibration, event-reconstruction algorithms and background modeling in an enlarged fiducial volume. This new analysis gives the most stringent limits on the spin-independent WIMP-nucleon cross section in the mass range above $4\,\mathrm{GeV}\,c^{-2}$, with a minimum of $0.4\,\mathrm{zb}$ at $33\,\mathrm{GeV}\,c^{-2}$ WIMP mass. This talk will provide an overview of the experiment, focusing on the recent science results.