Secondary atmospheric tau neutrino production

Understand

We evaluate the flux of tau neutrinos produced from the decay of pair produced taus from incident muons using a cascade equation analysis.

• To solve the cascade equations, our numerical result for the tau production $Z$ moment is given.
• Our results for the flux of tau neutrinos produced from incident muons are compared to the flux of tau neutrinos produced via oscillations and the direct prompt atmospheric tau neutrino flux.
• Results are given for both downward and upward going neutrinos fluxes and higher zenith angles are discussed.