Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX data
Abstract
We present constraints on weakly interacting massive particles (WIMP)-nucleus scattering from the 2013 data of the Large Underground Xenon dark matter experiment, including of search exposure. This new analysis incorporates several advances: single-photon calibration at the scintillation wavelength, improved event-reconstruction algorithms, a revised background model including events originating on the detector walls in an enlarged fiducial volume, and new calibrations from decays of an injected tritium source and from kinematically constrained nuclear recoils down to 1.1 keV. Sensitivity, especially to low-mass WIMPs, is enhanced compared to our previous results which modeled the signal only above a 3 keV minimum energy. Under standard dark matter halo assumptions and in the mass range above 4 , these new results give the most stringent direct limits on the spin-independent WIMP-nucleon cross section. The 90% C.L. upper limit has a minimum of 0.6 zb at 33 WIMP mass.
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Cite
@article{arxiv.1512.03506,
title = {Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX data},
author = {LUX Collaboration and D. S. Akerib and H. M. Araújo and X. Bai and A. J. Bailey and J. Balajthy and P. Beltrame and E. P. Bernard and A. Bernstein and T. P. Biesiadzinski and E. M. Boulton and A. Bradley and R. Bramante and S. B. Cahn and M. C. Carmona-Benitez and C. Chan and J. J. Chapman and A. A. Chiller and C. Chiller and A. Currie and J. E. Cutter and T. J. R. Davison and L. de Viveiros and A. Dobi and J. E. Y. Dobson and E. Druszkiewicz and B. N. Edwards and C. H. Faham and S. Fiorucci and R. J. Gaitskell and V. M. Gehman and C. Ghag and K. R. Gibson and M. G. D. Gilchriese and C. R. Hall and M. Hanhardt and S. J. Haselschwardt and S. A. Hertel and D. P. Hogan and M. Horn and D. Q. Huang and C. M. Ignarra and M. Ihm and R. G. Jacobsen and W. Ji and K. Kazkaz and D. Khaitan and R. Knoche and N. A. Larsen and C. Lee and B. G. Lenardo and K. T. Lesko and A. Lindote and M. I. Lopes and D. C. Malling and A. Manalaysay and R. L. Mannino and M. F. Marzioni and D. N. McKinsey and D. M. Mei and J. Mock and M. Moongweluwan and J. A. Morad and A. St. J. Murphy and C. Nehrkorn and H. N. Nelson and F. Neves and K. O`Sullivan and K. C. Oliver-Mallory and R. A. Ott and K. J. Palladino and M. Pangilinan and E. K. Pease and P. Phelps and L. Reichhart and C. Rhyne and S. Shaw and T. A. Shutt and C. Silva and V. N. Solovov and P. Sorensen and S. Stephenson and T. J. Sumner and M. Szydagis and D. J. Taylor and W. Taylor and B. P. Tennyson and P. A. Terman and D. R. Tiedt and W. H. To and M. Tripathi and L. Tvrznikova and S. Uvarov and J. R. Verbus and R. C. Webb and J. T. White and T. J. Whitis and M. S. Witherell and F. L. H. Wolfs and K. Yazdani and S. K. Young and C. Zhang},
journal= {arXiv preprint arXiv:1512.03506},
year = {2016}
}
Comments
Accepted by Phys. Rev. Lett