On the Non-detection of Glashow Resonance in IceCube
Journal of High Energy Astrophysics
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Electron anti-neutrinos at the Glashow resonance (GR, at PeV) have an enhanced probability to be detected. With three neutrinos detected by IceCube in the (1–2) PeV energy range at present, one would expect that about 1 to 4 GR should have been detected. The high-energy ∼8.7 PeV muon neutrino detected by IceCube may not be a GR event. If so, we expect to detect 50 to 70 GR , then one would have a “missing Glashow-resonance problem”. This would suggest (1) that pγ interaction rather than pp interaction is the dominant channel to produce the observed IceCube high-energy neutrinos; (2) that multi-pion pγ interactions are suppressed; and (3) that the magnetic field and photon energy density in the pγ emission region is such that significant cooling occurs before decaying, yet 's essentially do not cool before decaying.
Astrophysics and Astronomy
On the Non-detection of Glashow Resonance in IceCube.
Journal of High Energy Astrophysics, 18