Speaker
Description
We examine solar neutrinos in dark matter detectors, focusing on flavor-dependent radiative corrections to the coherent elastic neutrino-nucleus scattering (CE$\nu$NS) cross section within a three-flavor framework, incorporating matter effects from the Sun and Earth. Detectors with thresholds $\lesssim 1$ keV and exposures of $\sim 100$ ton-years could probe beyond-tree-level effects and offer unique insights into the muon and tau components of the solar neutrino flux. Recent CE$\nu$NS measurements by PandaX-4T and XENONnT provide sensitivity to non-standard interactions (NSI) and tau-flavor parameters, marking a significant advancement in neutrino physics. Complementary studies of neutrino-electron scattering in Borexino, and future data from JUNO, could further probe $\nu_\mu$ and $\nu_\tau$ contributions and test novel physics such as non-unitary evolution and U(1)$_{L_\mu-L_\tau}$ interactions.
| Working Group | WG 5: Neutrinos Beyond PMNS |
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