Primordial high energy neutrinos from long-lived relics exhibit sharp spectral features constrained by BBN and CMB, with a new Monte Carlo code modeling propagation distortions to assess their origin for events like KM3-230213A.
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Primordial high energy neutrinos
Primordial high energy neutrinos from long-lived relics exhibit sharp spectral features constrained by BBN and CMB, with a new Monte Carlo code modeling propagation distortions to assess their origin for events like KM3-230213A.