Improved Dark Matter Search Sensitivity Resulting from LUX Low-Energy Nuclear Recoil Calibration

Collaboration, LUX

doi:10.48550/arxiv.2210.05859

Cited by 2 publications

(4 citation statements)

References 33 publications

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“…Results reported in References 18 and 90 are consistent with each other within the quoted uncertainties, while the low-energy neutron experiment reports smaller uncertainties and lower-energy measurements. LUX has recently reported a lowerenergy xenon recoil measurement using single scatter events produced by a pulsed D-D neutron source (19), but due to the continuous nature of the recoil spectrum the results are not included in Figure 4.…”

Section: Figurementioning

confidence: 99%

“…This is especially true for low-mass dark matter searches (8) and reactor CEνNS detection (9,10), both of which require detection of sub-keV nuclear recoils. The production and detection of such low-energy recoils pose a series of new challenges and have begun to be explored only in the last few years in silicon (11,12), germanium (13)(14)(15)(16), and xenon (17)(18)(19). At higher energies, although calibration data are more abundant, different experiments often report conflicting results, which remain the main sources of uncertainty for current CEνNS studies.…”

Section: Introductionmentioning

confidence: 99%

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Detection and Calibration of Low-Energy Nuclear Recoils for Dark Matter and Neutrino Scattering Experiments

Barbeau

Hong

2023

Annu. Rev. Nucl. Part. Sci.

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Detection of low-energy nuclear recoil events plays a central role in searches for weakly interacting massive particle (WIMP) dark matter interactions with atomic matter and studies of coherent neutrino scatters. Precise nuclear recoil calibration data allow the responses of these dark matter and neutrino detectors to be characterized and enable in situ evaluation of an experiment's sensitivity to anticipated signals. This article reviews the common methods for detection of nuclear recoil events and the wide variety of techniques that have been developed to calibrate detector response to nuclear recoils. We summarize the main experimental factors that are critical for accurate nuclear recoil calibrations, investigate mitigation strategies for different backgrounds and biases, and discuss how the presentation of calibration results can facilitate comparison between experiments. Lastly, we discuss the challenges for future nuclear recoil calibration efforts and the physics opportunities they may enable. Expected final online publication date for the Annual Review of Nuclear and Particle Science, Volume 73 is September 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Detection and Calibration of Low-Energy Nuclear Recoils for Dark Matter and Neutrino Scattering Experiments

Barbeau

Hong

2023

Annu. Rev. Nucl. Part. Sci.

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“…Lowering the nuclear recoil (NR) energy threshold of dual-phase liquid xenon (LXe) time projection chambers (TPCs) is crucial to improve the sensitivity to light Weakly Interacting Massive Particles (WIMPs) and Coherent Elastic ν-Nucleus Scattering (CEνNS) events. At present the scintillation and ionization yields have been measured down to 0.45 keV NR and 0.3 keV NR , respectively, using nuclear recoil events created by neutrons scattering off xenon [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Simulations were run with a model of the MiX detector to quantify the rates of the neutron capture NR events that can be used to perform a measurement of the scintillation and ionization yields. A neutron generator capable of creating a pulsed beam of about 10 μs width, like the Adelphi Deuterium-Deuterium (DD) generator used in LZ and LUX NR calibrations [1,3], and a water tank surrounding the MiX cryostat to moderate neutrons, are crucial to produce the neutron capture NR events of interest.…”

Section: Introductionmentioning

confidence: 99%

Simulation results for a low energy nuclear recoil yields measurement in liquid xenon using the MiX detector

Amarasinghe

Coronel²,

Huang³

et al. 2023

J. Inst.

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Measuring the scintillation and ionization yields of liquid xenon in response to ultra-low energy nuclear recoil events is necessary to increase the sensitivity of liquid xenon experiments to light dark matter. Neutron capture on xenon can be used to produce nuclear recoil events with energies below 0.3 keVNR via the asymmetric emission of γ rays during nuclear de-excitation. The feasibility of an ultra-low energy nuclear recoil measurement using neutron capture was investigated for the Michigan Xenon (MiX) detector, a small dual-phase xenon time projection chamber that is optimized for a high scintillation gain. Simulations of the MiX detector, a partial neutron moderator, and a pulsed neutron generator indicate that a population of neutron capture events can be isolated from neutron scattering events. Further, the rate of neutron captures in the MiX detector was optimized by varying the thickness of the partial neutron moderator, neutron pulse width, and neutron pulse frequency.

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Improved Dark Matter Search Sensitivity Resulting from LUX Low-Energy Nuclear Recoil Calibration

Cited by 2 publications

References 33 publications

Detection and Calibration of Low-Energy Nuclear Recoils for Dark Matter and Neutrino Scattering Experiments

Detection and Calibration of Low-Energy Nuclear Recoils for Dark Matter and Neutrino Scattering Experiments

Simulation results for a low energy nuclear recoil yields measurement in liquid xenon using the MiX detector

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