Determining the Density of the Sun with Neutrinos
arXiv:2502.17546 · doi:10.1016/j.physletb.2025.139560
Abstract
The discovery of solar neutrinos confirmed that the inner workings of the Sun generally match our theoretical understanding of the fusion process. Solar neutrinos have also played a role in discovering that neutrinos have mass and that they oscillate. We combine the latest solar neutrino data along with other oscillation data from reactors to determine the Sun's density profile. We derive constraints given the current data and show the anticipated improvements with more reactor neutrino data from JUNO constraining the true oscillation parameters and more solar neutrino data from DUNE which should provide a crucial measurement of neutrinos.
arXiv comment10 pages, 6 figures, 1 table, comments welcome! v2: references, clarifying remarks added, typo fixed, matches published version
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