Solar neutrino physics with low-threshold dark matter detectors

Abstract

Dark matter detectors will soon be sensitive to Solar neutrinos via two distinct channels: coherent neutrino-nucleus scattering and neutrino electron elastic scattering. We establish an analysis method for extracting Solar model properties and neutrino properties from these measurements, including the possible effects of sterile neutrinos which have been hinted at by some reactor experiments and cosmological measurements. Even including sterile neutrinos, through the coherent scattering channel a 1 ton-year exposure with a low-threshold Germanium detector could improve on the current measurement of the normalization of the ${}^8$B Solar neutrino flux down to 3% or less. Combining with the elastic scattering data will provide constraints on both the high and low energy survival probability, and will improve on the uncertainty on the active-to-sterile mixing angle by a factor of two. This sensitivity to active-to-sterile transitions is competitive and complementary to forthcoming dedicated short baseline sterile neutrino searches with nuclear decays.

12 pages, 4 figures, 3 tables

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Cited by in corpus (6)

• The Future of Solar Neutrinos
• Flavor-dependent radiative corrections in coherent elastic neutrino-nucleus scattering
• Optimizing EDELWEISS detectors for low-mass WIMP searches
• Interplay between nonstandard and nuclear constraints in coherent elastic neutrino-nucleus scattering experiments
• Constraining Light Mediators via Detection of Coherent Elastic Solar Neutrino Nucleus Scattering
• The Sterile-Active Neutrino Flavor Model: the Imprint of Dark Matter on the Electron Neutrino Spectra