Author(s): M. G. Aartsen et al. (IceCube Collaboration)
IceCube has put the tightest constraints on the cosmogenic neutrino flux—neutrinos produced when ultrahigh energy cosmic rays scatter from the cosmic microwave background. In the process the collaboration has also detected the highest energy neutrino to date.
[Phys. Rev. Lett. 117, 241101] Published Wed Dec 07, 2016