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Title: Low-Energy Physics Reach of Xenon Detectors for Nuclear-Recoil-Based Dark Matter and Neutrino Experiments

Abstract

Dual-phase xenon detectors lead the search for keV-scale nuclear recoil signals expected from the scattering of weakly interacting massive particle (WIMP) dark matter, and can potentially be used to study the coherent nuclear scattering of MeV-scale neutrinos. New capabilities of such experiments can be enabled by extending their nuclear recoil searches down to the lowest measurable energy. The response of the liquid xenon target medium to nuclear recoils, however, is not well characterized below a few keV, leading to large uncertainties in projected sensitivities. In this work, we report a new measurement of ionization signals from nuclear recoils in liquid xenon down to the lowest energy reported to date. At 0.3 keV, we find that the average recoil produces approximately one ionization electron; this is the first measurement of nuclear recoil signals at the single-ionization-electron level, approaching the physical limit of liquid xenon ionization detectors. We discuss the implications of these measurements on the physics reach of xenon detectors for nuclear-recoil-based WIMP dark matter searches and the detection of coherent elastic neutrino-nucleus scattering.

Authors:
 [1];  [2];  [2];  [2];  [3];  [2];  [2];  [2];  [3];  [4];  [4];  [4];  [4];  [4];  [4]
  1. Stanford Univ., CA (United States). Dept. of Physics; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Davis, CA (United States). Dept. of Physics
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. of California, Davis, CA (United States). Dept. of Physics
  4. Duke Univ., Durham, NC (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1598119
Report Number(s):
[LLNL-JRNL-776717]
[Journal ID: ISSN 0031-9007; PRLTAO; 970104]
Grant/Contract Number:  
[AC52-07NA27344; SC0014249]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
[ Journal Volume: 123; Journal Issue: 23]; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Electronic excitation & ionization; Particle dark matter; Dark matter detectors; Neutrino detectors; Neutron scattering

Citation Formats

Lenardo, B. G., Xu, J., Pereverzev, S., Bernstein, A, Naim, D, Akindele, O., Kazkaz, K., Kingston, J., Tripathi, M, Awe, C, Li, L, Hedges, S, Runge, J, An, P, and Barbeau, P. Low-Energy Physics Reach of Xenon Detectors for Nuclear-Recoil-Based Dark Matter and Neutrino Experiments. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.123.231106.
Lenardo, B. G., Xu, J., Pereverzev, S., Bernstein, A, Naim, D, Akindele, O., Kazkaz, K., Kingston, J., Tripathi, M, Awe, C, Li, L, Hedges, S, Runge, J, An, P, & Barbeau, P. Low-Energy Physics Reach of Xenon Detectors for Nuclear-Recoil-Based Dark Matter and Neutrino Experiments. United States. doi:10.1103/PhysRevLett.123.231106.
Lenardo, B. G., Xu, J., Pereverzev, S., Bernstein, A, Naim, D, Akindele, O., Kazkaz, K., Kingston, J., Tripathi, M, Awe, C, Li, L, Hedges, S, Runge, J, An, P, and Barbeau, P. Wed . "Low-Energy Physics Reach of Xenon Detectors for Nuclear-Recoil-Based Dark Matter and Neutrino Experiments". United States. doi:10.1103/PhysRevLett.123.231106.
@article{osti_1598119,
title = {Low-Energy Physics Reach of Xenon Detectors for Nuclear-Recoil-Based Dark Matter and Neutrino Experiments},
author = {Lenardo, B. G. and Xu, J. and Pereverzev, S. and Bernstein, A and Naim, D and Akindele, O. and Kazkaz, K. and Kingston, J. and Tripathi, M and Awe, C and Li, L and Hedges, S and Runge, J and An, P and Barbeau, P},
abstractNote = {Dual-phase xenon detectors lead the search for keV-scale nuclear recoil signals expected from the scattering of weakly interacting massive particle (WIMP) dark matter, and can potentially be used to study the coherent nuclear scattering of MeV-scale neutrinos. New capabilities of such experiments can be enabled by extending their nuclear recoil searches down to the lowest measurable energy. The response of the liquid xenon target medium to nuclear recoils, however, is not well characterized below a few keV, leading to large uncertainties in projected sensitivities. In this work, we report a new measurement of ionization signals from nuclear recoils in liquid xenon down to the lowest energy reported to date. At 0.3 keV, we find that the average recoil produces approximately one ionization electron; this is the first measurement of nuclear recoil signals at the single-ionization-electron level, approaching the physical limit of liquid xenon ionization detectors. We discuss the implications of these measurements on the physics reach of xenon detectors for nuclear-recoil-based WIMP dark matter searches and the detection of coherent elastic neutrino-nucleus scattering.},
doi = {10.1103/PhysRevLett.123.231106},
journal = {Physical Review Letters},
number = [23],
volume = [123],
place = {United States},
year = {2019},
month = {12}
}

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