September 27, 2021 to October 1, 2021
Indiana University
America/Indiana/Indianapolis timezone

Tau (and Muon ) Airshower on Earth (and Space)

Sep 29, 2021, 3:10 PM
Virtual (Indiana University)


Indiana University

Oral contribution Tau2021 Abstracts Session 4a: Neutrinos and Dark Matter


Prof. Daniele Fargion (Rome University)


The neutrino astronomy is polluted by the atmospheric noise up TeVs energy. Anyway Icecube claimed an astrophysical signature (just above a few tens TeV energy), since the 2013. They discovered a sudden increase in the cascade event rate, surprisingly more abundant than the previous TeVs muon neutrino tracks. Such a flavor switch might be also mimic by an atmospheric charm rising presence. Absent correlations with optical, X, gamma sky of Icecube events it is still puzzling. Nevertheless the eventual tau neutrino appearence, almost absent in any atmospheric noise,( even the charm one), should confirm a neutrino astronomy above PeVs energy. The tau signals are expected by flavor mixing in cosmic flights; they may offer a definitive fingerprint of the astrophysical neutrino nature. These tau neutrino ruling role might rise in ice (IceCube) or water (Antares) as a double bang ( first interaction, second tau decay cascades) or by a tau airshower: an internal tau neutrino interaction in the rock of a mountain or of the Earth crust and the later tau decay outside, while in flight in air. The physics of tau airshowers had been noted since 1999 and became today the main road map in widest experimental projects. We discuss and update the tau airshower signature from Earth and planets,by array on top Mountains, Balloons or satellites. Very new ad hoc instruments and novel theoretical expectation will be shown for the first time.

What is your topic? Future opportunities in Tau Physics

Primary authors

Prof. Daniele Fargion (Rome University) Maxim Khlopov

Presentation materials