Explanation for the low flux of high energy astrophysical muon-neutrinos

Abstract

We consider the possibility that some exotic neutrino property is responsible for reducing the muon neutrino flux at high energies from distant neutrino sources; specifically, we consider (i) neutrino decay and (ii) neutrinos being pseudo-Dirac particles. This would provide a mechanism for the lack of high energy muons in the Icecube detector.

3 pages. Final version to be published in Phys.Rev.Lett. Some corrections, including typos made, furthertypos corrected and minor changes