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Nuclear Recoil Calibration at Sub-keV Energies in LUX and Its Impact on Dark Matter Search Sensitivity

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arxiv 2210.05859 v4 pith:OZCVNKSI submitted 2022-10-12 physics.ins-det astro-ph.COhep-ex

Nuclear Recoil Calibration at Sub-keV Energies in LUX and Its Impact on Dark Matter Search Sensitivity

LUX Collaboration: D.S. Akerib , S. Alsum , H.M. Ara\'ujo , X. Bai , J. Balajthy , J. Bang , A. Baxter , E.P. Bernard
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A. Bernstein T.P. Biesiadzinski E.M. Boulton B. Boxer P. Br\'as S. Burdin D. Byram M.C. Carmona-Benitez C. Chan J.E. Cutter L. de Viveiros E. Druszkiewicz A. Fan S. Fiorucci R.J. Gaitskell C. Ghag M.G.D. Gilchriese C. Gwilliam C.R. Hall S.J. Haselschwardt S.A. Hertel D.P. Hogan M. Horn D.Q. Huang C.M. Ignarra R.G. Jacobsen O. Jahangir W. Ji K. Kamdin K. Kazkaz D. Khaitan E.V. Korolkova S. Kravitz V.A. Kudryavtsev E. Leason K.T. Lesko J. Liao J. Lin A. Lindote M.I. Lopes A. Manalaysay R.L. Mannino N. Marangou D.N. McKinsey D.-M. Mei J.A. Morad A.St.J. Murphy A. Naylor C. Nehrkorn H.N. Nelson F. Neves A. Nilima K.C. Oliver-Mallory K.J. Palladino C. Rhyne Q. Riffard G.R.C. Rischbieter P. Rossiter S. Shaw T.A. Shutt C. Silva M. Solmaz V.N. Solovov P. Sorensen T.J. Sumner N. Swanson M. Szydagis D.J. Taylor R. Taylor W.C. Taylor B.P. Tennyson P.A. Terman D.R. Tiedt W.H. To L. Tvrznikova U. Utku A. Vacheret A. Vaitkus V. Velan R.C. Webb J.T. White T.J. Whitis M.S. Witherell F.L.H. Wolfs D. Woodward X. Xiang J. Xu C. Zhang
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classification physics.ins-det astro-ph.COhep-ex
keywords darkmatternuclearxenoncalibrationchargedetectorsdual-phase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Dual-phase xenon time projection chamber (TPC) detectors offer heightened sensitivities for dark matter detection across a spectrum of particle masses. To broaden their capability to low-mass dark matter interactions, we investigated the light and charge responses of liquid xenon (LXe) to sub-keV nuclear recoils. Using neutron events from a pulsed Adelphi Deuterium-Deuterium neutron generator, an in situ calibration was conducted on the LUX detector. We demonstrate direct measurements of light and charge yields down to 0.45 keV and 0.27 keV, respectively, both approaching single quanta production, the physical limit of LXe detectors. These results hold significant implications for the future of dual-phase xenon TPCs in detecting low-mass dark matter via nuclear recoils.

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  2. Low-Energy Nuclear Recoil Calibration of XENONnT with a $^{88}$YBe Photoneutron Source

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