Horizontal and Upward Tau Airshowers in Valleys from Mountains and Space: Discovering UHE Neutrinos and New Physics

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Upward and horizontal tau Air-showers emerging from the Earth crust or mountain chains are the most powerful signals of Ultra High Energy UHE neutrinos nutau, barνtau and barnuₑ at PeVs and higher energy. The multiplicity in tau Air-showers secondary particles, Nopt=10¹²(Etau/PeV), Ngamma= 10⁸*Etau/PeV, Nₑ₋ ₑ₊= 2*10⁷ Etau/PeV, Nmu= 3 *10⁵ (Etau/PeV)⁰.⁸⁵ make easy their discover. UHE nuₜau,barνₜau, following Super Kamiokande evidence of neutrino flavor mixing, nuₘu<-->nuₜau, should be as abundant as nuₘu, barνₘu. Also anti-neutrino electrons, barνₑ, near the Glashow W resonance energy peak, Ebarνₑ = M²W / 2mₑ = 6.3*10¹⁵ eV may generate tau Air-showers. Upward UHE nuₜau- N interaction on Earth crust at horizontal edge and from below, their consequent upward UHE tau air-showers beaming toward high mountains, air-planes, ballons and satellites should flash gamma, mu, X and Cherenkov lights toward detectors. Such upward tau air-shower may already hit nearby satellite GRO gamma detectors flashing them by short, hard, diluted gamma-burst at the edge of BATSE threshold. The tau air-shower may test the UHE neutrino interactions leading to additional fine-tuned test of New TeV Physics both in Mountain Valleys and in Upward showers.