New IceCube data and color octet neutrino interpretation of the PeV energy events

Understand

IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, recently.

• They have used the data collected in two years in their first publication, which reveals observation of two PeV energy neutrino events.
• The second publication of the collaboration including more data has also confirmed main features of the former paper.
• In literature, various interpretations of the IceCube data have been proposed.