title: Explanation for the low flux of high-energy astrophysical muon neutrinos.
abstract: There has been some concern about the unexpected paucity of cosmic high-energy muon neutrinos in detectors probing the energy region beyond 1 PeV. As a possible solution we consider the possibility that some exotic neutrino property is responsible for reducing the muon neutrino flux at high energies from distant sources; specifically, we consider (i) neutrino decay and (ii) neutrinos being pseudo-Dirac-particles. This would provide a mechanism for the reduction of high-energy muon events in the IceCube detector, for example.
authors.affiliation: Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA.
authors.forename: Sandip
authors.initials: S
authors.lastname: Pakvasa
authors.forename: Anjan
authors.initials: A
authors.lastname: Joshipura
authors.forename: Subhendra
authors.initials: S
authors.lastname: Mohanty