The 37 high energy neutrino events ranging from 30 to 2000 TeV observed by the IceCube experiment in the South Pole cannot be accounted for by atmospheric explanation alone (rejected at 5.7 sigma). In this talk we will examine the possibility that these events come from the decays of a heavy long-lived particle of PeV mass. We will compare this with the scenario where neutrinos are produced by astrophysical sources modeled by a single power-law spectrum and a viable hybrid situation where the spectrum is a product of two components: a power-law and the long-lived particle decays. We will show that the all these scenarios fit the data equally well and proceed to evaluate the exposure time needed in order to distinguish between them in the future. Finally we present a simple extension of the Standard Model that could account for the heavy particle decays that are required to explain the data. We will also discuss the relic abundance of such long-lived particle.
