Solar neutrino detection in a large volume double-phase liquid argon experiment

Abstract

Precision measurements of solar neutrinos emitted by specific nuclear reaction chains in the Sun are of great interest for developing an improved understanding of star formation and evolution. Given the expected neutrino fluxes and known detection reactions, such measurements require detectors capable of collecting neutrino-electron scattering data in exposures on the order of 1 ktonne yr, with good energy resolution and extremely low background. Two-phase liquid argon time projection chambers (LAr TPCs) are under development for direct Dark Matter WIMP searches, which possess very large sensitive mass, high scintillation light yield, good energy resolution, and good spatial resolution in all three cartesian directions. While enabling Dark Matter searches with sensitivity extending to the "neutrino floor" (given by the rate of nuclear recoil events from solar neutrino coherent scattering), such detectors could also enable precision measurements of solar neutrino fluxes using the neutrino-electron elastic scattering events. Modeling results are presented for the cosmogenic and radiogenic backgrounds affecting solar neutrino detection in a 300 tonne (100 tonne fiducial) LAr TPC operating at LNGS depth (3,800 meters of water equivalent). The results show that such a detector could measure the CNO neutrino rate with ~15% precision, and significantly improve the precision of the 7Be and pep neutrino rates compared to the currently available results from the Borexino organic liquid scintillator detector.

21 pages, 7 figures, 6 tables

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• Measurement of the solar neutrino capture rate with gallium metal. III: Results for the 2002--2007 data-taking period
• First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso
• Results from the first use of low radioactivity argon in a dark matter search
• LUX-ZEPLIN (LZ) Conceptual Design Report
• The veto system of the DarkSide-50 experiment
• Characterization of Silicon Photomultipliers for nEXO
• Index of refraction, Rayleigh scattering length, and Sellmeier coefficients in solid and liquid argon and xenon

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• The Future of Solar Neutrinos
• Direct detection of dark matter: a critical review
• Developing the MeV potential of DUNE: Detailed considerations of muon-induced spallation and other backgrounds
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• Monochromatic dark neutrinos and boosted dark matter in noble liquid direct detection
• Identifying WIMP dark matter from particle and astroparticle data
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• First ground-level laboratory test of the two-phase xenon emission detector RED-100
• Simulation of argon response and light detection in the DarkSide-50 dual phase TPC
• Pre-Supernova Neutrinos in Large Dark Matter Direct Detection Experiments
• Constraining Neutrino Lifetimes and Magnetic Moments via Solar Neutrinos in the Large Xenon Detectors
• Direct Detection of Dark Matter -- APPEC Committee Report
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• Calculation of Momentum Distribution Function of a Non-thermal Fermionic Dark Matter
• CNO Solar Neutrinos in Next-Generation Dark Matter Experiments
• Sensitivity to neutrinos from the solar CNO cycle in Borexino
• Field dependence of electronic recoil signals in a dual-phase liquid xenon time projection chamber
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• The science and technology of liquid argon detectors
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• Search for magnetic inelastic dark matter with XENON100
• Development and Performance of a Sealed Liquid Xenon Time Projection Chamber
• Explaining Dark Matter and Neutrino Mass in the light of TYPE-II Seesaw Model
• CYG$\nu$S: Detecting solar neutrinos with directional gas time projection chambers
• Exploring the Origin of Supermassive Black Holes with Coherent Neutrino Scattering
• Status and Perspectives of Neutrino Physics
• The DireXeno Experiment -- Measuring Correlated Scintillation Signatures in Liquid Xenon