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

TL;DR

This paper explores how exotic neutrino properties like decay or pseudo-Dirac nature could explain the observed low flux of high-energy astrophysical muon-neutrinos detected by IceCube.

Contribution

It investigates two specific exotic neutrino scenarios as mechanisms for the suppressed high-energy muon neutrino flux.

Findings

Neutrino decay could reduce muon neutrino flux at high energies.

Pseudo-Dirac neutrinos may explain the low flux observed.

Provides theoretical framework linking exotic properties to IceCube observations.

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.