Papers › CNO Solar Neutrinos in Next-Generation Dark Matter Experiments
CNO Solar Neutrinos in Next-Generation Dark Matter Experiments
Jayden L. Newstead, Louis E. Strigari, Rafael F. Lang
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We study the prospects for measuring the low-energy components of the solar neutrino flux in future direct dark matter detection experiments. We show that for a depletion of ¹³⁶Xe by a factor of 100 relative to its natural abundance, and an extension to electron recoil energies of ∼ MeV, future xenon experiments with exposure ∼200 ton-yr can detect the CNO component of the solar neutrino flux at ∼3 σ significance. A CNO detection will provide important insight into metallicity of the solar interior. Precise measurement of low-energy solar neutrinos, including as pp, ⁷Be, and pep components, will further improve constraints on the "neutrino luminosity" of the Sun, thereby providing constraints on alternative sources of energy production. We find that a measurement of L_ν/L_⊙ of order one percent is possible with the above exposure, improving on current bounds from a global analysis of solar neutrino data by a factor of about seven.
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