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arXiv · 1808.08232

DUNE as the Next-Generation Solar Neutrino Experiment

Francesco Capozzi·Shirley Weishi Li·Guanying Zhu·John F. Beacom
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Abstract

We show that the Deep Underground Neutrino Experiment (DUNE), with significant but feasible new efforts, has the potential to deliver world-leading results in solar neutrinos. With a 100 kton-year exposure, DUNE could detect $\gtrsim 10^5$ signal events above 5 MeV electron energy. Separate precision measurements of neutrino-mixing parameters and the $^8$B flux could be made using two detection channels ($\nu_e + \, ^{40}$Ar and $\nu_{e,\mu,\tau} + e^-$) and the day-night effect ($> 10 \sigma$). New particle physics may be revealed through the comparison of solar neutrinos (with matter effects) and reactor neutrinos (without), which is discrepant by $\sim 2 \sigma$ (and could become $5.6 \sigma$). New astrophysics may be revealed through the most precise measurement of the $^8$B flux (to 2.5\%) and the first detection of the {\it hep} flux (to 11\%). {\it DUNE is required:} No other experiment, even proposed, has been shown capable of fully realizing these discovery opportunities.

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Francesco Capozzi, Shirley Weishi Li, Guanying Zhu, John F. Beacom. 2018-08-24. DUNE as the Next-Generation Solar Neutrino Experiment. https://doi.org/10.1103/physrevlett.123.131803

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