Abstract
A single power law flux of high energy neutrinos does not adequately explain the entire event spectrum observed at the IceCube, specially the lack of Glashow resonance (GR) events expected around 6.3 PeV. To remedy this we consider two new scenarios (1) \(\nu \) to 3 \(\nu \) splitting of neutrino and (2) CR\(\nu \) absorption by C\(\nu \)B, both of which happen over cosmological distances. In the first scenario we show that for the neutrino splitting, the flavor ratios of the daughter neutrinos are different from the standard oscillation or invisible decay cases and can be used as a test of this scenario. In the second scenario we show that capture of CR\(\nu \) by C\(\nu \)B produces a dip in the flux of neutrino which then translates into the absence of GR in the IceCube spectrum.
Published Version
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