Which is the flavor of cosmic neutrinos seen by IceCube?

Abstract

We analyze the high-energy neutrino events observed by IceCube, aiming to probe the initial flavor of cosmic neutrinos. We study the track-to-shower ratio of the subset with energy above 60 TeV, where the signal is expected to dominate and show that different production mechanisms give rise to different predictions even accounting for the uncertainties due to neutrino oscillations. We include for the first time the passing muons observed by IceCube in the analysis. They corroborate the hypotheses that cosmic neutrinos have been seen and their flavor matches expectations.

4 pages, 1 figure

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Cited by in corpus (8)

• Flavor Ratio of Astrophysical Neutrinos above 35 TeV in IceCube
• Testing decay of astrophysical neutrinos with incomplete information
• Spectral analysis of the high-energy IceCube neutrinos
• Boosted Dark Matter in IceCube and at the Galactic Center
• Sterile Neutrinos and Flavor Ratios in IceCube
• Probing decaying heavy dark matter with the 4-year IceCube HESE data
• On the IceCube spectral anomaly
• Dark Matter interpretation of low energy IceCube MESE excess