$pp$ Solar Neutrinos at DARWIN

• DOI: 10.48550/arxiv.2111.02421
• Publication Date: 2021-01-01
• Authors: André de Gouvêa; Emma McGinness; Ivan Martínez-Soler; Yuber F. Perez-Go...
• Keywords: WIMP

The DARWIN collaboration recently argued that (DARk matter WImp search with liquid xenoN) can collect, via neutrino--electron scattering, a large, useful sample of solar $pp$-neutrinos, and measure their survival probability sub-percent precision. We explore the physics potential such in more detail. estimate that, 300 ton-years data, also measure, help current neutrino value $\sin^2θ_{13}$, to exclude $\sin^2θ_{13}=0$ close three-sigma level. some detail how well constrain existence new mass-eigenstate $ν_4$ is quasi-mass-degenerate $ν_1$ find DARWIN's sensitivity supersedes all near-future searches for new, very light neutrinos. In particular, test hypothesis pseudo-Dirac fermion as long induced mass-squared difference larger than $10^{-13}$ eV$^2$, one order magnitude sensitive existing constraints. Throughout, we allowed hypotheses filled natural xenon or $^{136}$Xe-depleted xenon.