UHE and EHE neutrino induced taus inside the Earth

Abstract

Tau neutrinos interacting inside the Earth produce $τ$ leptons which thereafter can decay inside the atmosphere. The propagation of extremely energetic \nut's and $τ$'s through the Earth is studied by means of a detailed Monte Carlo simulation, taking into account all major mechanisms of \nut interactions and $τ$ energy loss as well as decay modes. The rates of $τ$'s emerging from the Earth are determined as a function of $τ$'s energy for several cosmic neutrino models.

21 pages, accepted for publication in Astroparticle Physics