$pp$ Solar Neutrinos at DARWIN
Andr\'e de Gouv\^ea, Emma McGinness, Ivan Martinez-Soler, and Yuber F., Perez-Gonzalez

TL;DR
DARWIN can significantly advance solar neutrino physics by precisely measuring $pp$-neutrinos, constraining neutrino mixing parameters, and testing for new light neutrino states with unprecedented sensitivity.
Contribution
This work details DARWIN's potential to measure solar $pp$-neutrinos, determine $ heta_{13}$, and search for quasi-degenerate neutrino states, surpassing current experimental limits.
Findings
DARWIN can measure $ heta_{13}$ with high precision.
It can exclude $ u_1$ as a pseudo-Dirac fermion for mass-squared differences above $10^{-13}$ eV$^2$.
Sensitivity exceeds current and near-future neutrino searches.
Abstract
The DARWIN collaboration recently argued that DARWIN (DARk matter WImp search with liquid xenoN) can collect, via neutrino--electron scattering, a large, useful sample of solar -neutrinos, and measure their survival probability with sub-percent precision. We explore the physics potential of such a sample in more detail. We estimate that, with 300 ton-years of data, DARWIN can also measure, with the help of current solar neutrino data, the value of , with the potential to exclude close to the three-sigma level. We explore in some detail how well DARWIN can constrain the existence of a new neutrino mass-eigenstate that is quasi-mass-degenerate with and find that DARWIN's sensitivity supersedes that of all current and near-future searches for new, very light neutrinos. In particular, DARWIN can test the hypothesis that is…
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Taxonomy
TopicsDark Matter and Cosmic Phenomena · Neutrino Physics Research · Scientific Research and Discoveries
