Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX Data

LUX Collaboration

doi:10.1103/PhysRevLett.116.161301

Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX Data

LUX Collaboration

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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 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.

Original language	English (US)
Article number	161301
Journal	Physical Review Letters
Volume	116
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.116.161301
State	Published - Apr 20 2016

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.116.161301

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@article{be009b46bc814b799efe7cc7dd1185b1,

title = "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 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.",

author = "{LUX Collaboration} and Akerib, {D. S.} and Ara{\'u}jo, {H. M.} and X. Bai and Bailey, {A. J.} and J. Balajthy and P. Beltrame and Bernard, {E. P.} and A. Bernstein and Biesiadzinski, {T. P.} and Boulton, {E. M.} and A. Bradley and R. Bramante and Cahn, {S. B.} and Carmona-Benitez, {M. C.} and C. Chan and Chapman, {J. J.} and Chiller, {A. A.} and C. Chiller and A. Currie and Cutter, {J. E.} and Davison, {T. J.R.} and {De Viveiros}, L. and A. Dobi and Dobson, {J. E.Y.} and E. Druszkiewicz and Edwards, {B. N.} and Faham, {C. H.} and S. Fiorucci and Gaitskell, {R. J.} and Gehman, {V. M.} and C. Ghag and Gibson, {K. R.} and Gilchriese, {M. G.D.} and Hall, {C. R.} and M. Hanhardt and Haselschwardt, {S. J.} and Hertel, {S. A.} and Hogan, {D. P.} and M. Horn and Huang, {D. Q.} and Ignarra, {C. M.} and M. Ihm and Jacobsen, {R. G.} and W. Ji and K. Kazkaz and D. Khaitan and R. Knoche and Larsen, {N. A.} and C. Lee and Lenardo, {B. G.}",

year = "2016",

month = apr,

day = "20",

doi = "10.1103/PhysRevLett.116.161301",

language = "English (US)",

volume = "116",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "16",

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TY - JOUR

T1 - Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX Data

AU - LUX Collaboration

AU - Akerib, D. S.

AU - Araújo, H. M.

AU - Bai, X.

AU - Bailey, A. J.

AU - Balajthy, J.

AU - Beltrame, P.

AU - Bernard, E. P.

AU - Bernstein, A.

AU - Biesiadzinski, T. P.

AU - Boulton, E. M.

AU - Bradley, A.

AU - Bramante, R.

AU - Cahn, S. B.

AU - Carmona-Benitez, M. C.

AU - Chan, C.

AU - Chapman, J. J.

AU - Chiller, A. A.

AU - Chiller, C.

AU - Currie, A.

AU - Cutter, J. E.

AU - Davison, T. J.R.

AU - De Viveiros, L.

AU - Dobi, A.

AU - Dobson, J. E.Y.

AU - Druszkiewicz, E.

AU - Edwards, B. N.

AU - Faham, C. H.

AU - Fiorucci, S.

AU - Gaitskell, R. J.

AU - Gehman, V. M.

AU - Ghag, C.

AU - Gibson, K. R.

AU - Gilchriese, M. G.D.

AU - Hall, C. R.

AU - Hanhardt, M.

AU - Haselschwardt, S. J.

AU - Hertel, S. A.

AU - Hogan, D. P.

AU - Horn, M.

AU - Huang, D. Q.

AU - Ignarra, C. M.

AU - Ihm, M.

AU - Jacobsen, R. G.

AU - Ji, W.

AU - Kazkaz, K.

AU - Khaitan, D.

AU - Knoche, R.

AU - Larsen, N. A.

AU - Lee, C.

AU - Lenardo, B. G.

PY - 2016/4/20

Y1 - 2016/4/20

N2 - 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.

AB - 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.

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UR - http://www.scopus.com/inward/citedby.url?scp=84964194088&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.116.161301

DO - 10.1103/PhysRevLett.116.161301

M3 - Article

C2 - 27152785

SN - 0031-9007

VL - 116

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 161301

ER -

Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX Data

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