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Title: Improved limits on scattering of weakly interacting massive particles from reanalysis of 2013 LUX data

Abstract

Here, we present constraints on weakly interacting massive particles (WIMP)-nucleus scattering from the 2013 data of the Large Underground Xenon dark matter experiment, including 1.4 × 104 kg day 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 β 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 GeV c–2, 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 GeV c–2 WIMP mass.

Authors:
 [1]
  1. Case Western Reserve Univ., Cleveland, OH (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States). et al.
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
LUX Collaboration
OSTI Identifier:
1257739
Alternate Identifier(s):
OSTI ID: 1248260; OSTI ID: 1379296
Report Number(s):
SLAC-PUB-16559
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
AC02-76SF00515; FG02-08ER41549; FG02-91ER40688; FG02-95ER40917; FG02-91ER40674; NA0000979; FG02-11ER41738; SC0006605; AC02-05CH11231; AC52-07NA27344; FG01-91ER40618
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 116; Journal Issue: 16; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Akerib, D. S. Improved limits on scattering of weakly interacting massive particles from reanalysis of 2013 LUX data. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.116.161301.
Akerib, D. S. Improved limits on scattering of weakly interacting massive particles from reanalysis of 2013 LUX data. United States. doi:10.1103/PhysRevLett.116.161301.
Akerib, D. S. Wed . "Improved limits on scattering of weakly interacting massive particles from reanalysis of 2013 LUX data". United States. doi:10.1103/PhysRevLett.116.161301. https://www.osti.gov/servlets/purl/1257739.
@article{osti_1257739,
title = {Improved limits on scattering of weakly interacting massive particles from reanalysis of 2013 LUX data},
author = {Akerib, D. S.},
abstractNote = {Here, we present constraints on weakly interacting massive particles (WIMP)-nucleus scattering from the 2013 data of the Large Underground Xenon dark matter experiment, including 1.4 × 104 kg day 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 β 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 GeV c–2, 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 GeV c–2 WIMP mass.},
doi = {10.1103/PhysRevLett.116.161301},
journal = {Physical Review Letters},
number = 16,
volume = 116,
place = {United States},
year = {2016},
month = {4}
}

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