Preprint
Sep 2026
SN1987A constraints on the neutrino-dark-fermion interaction from resonant scattering with C$\nu$B
Neutrino self-interactions mediated by a light scalar offer a compelling resolution to cosmological tensions and may naturally arise in neutrino mass generation mechanisms. When the scalar also couples to a light dark-sector fermion, supernova neutrinos can resonantly annihilate with the cosmic neutrino background (C$\...
Christina Gao, Ke Hu, Kun-Feng Lyu et al.
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