Multi-PeV Signals from a New Astrophysical Neutrino Flux beyond the Glashow Resonance
Multi-PeV Signals from a New Astrophysical Neutrino Flux beyond the Glashow Resonance
The IceCube neutrino discovery was punctuated by three showers with E_{ν}≈1-2 PeV. Interest is intense in possible fluxes at higher energies, though a deficit of E_{ν}≈6 PeV Glashow resonance events implies a spectrum that is soft and/or cutoff below ∼few PeV. However, IceCube recently reported a through-going track depositing 2.6±0.3 …