Ultrahigh-energy neutrino at GZK energy: Z-WW showering in dark halo and tau airshowers emerging from the Earth

Daniele Fargion

doi:10.1117/12.457958

3 March 2003 Ultra high-energy neutrino at GZK energy: Z-WW showering in dark halo and tau airshowers emerging from the Earth

Daniele Fargion

Author Affiliations +

Proceedings Volume 4858, Particle Astrophysics Instrumentation; (2003) https://doi.org/10.1117/12.457958
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

Relic neutrino nu_r light masses clustering in Galactic and Local Hot Dark Halos act as a beam dump calorimeter. Ultra High Energy nu, above ZeV, born by AGNs, GRBs at cosmic edges, overcoming the Greisen, Zatsepin, Kuzmin (GZK) cut-off, may hit near Z resonance and WW-ZZ channels energies: their showering into nucleons and gamma Ultra High Cosmic Ray (UHECR) fit observed data . Any tiny neutrino mass splitting may reflect into a twin bump at highest GZK energy cut-off. The lighter the neutrino masses the higher the Z-Showering cut-off. The Z or WW,ZZ showering might explain a peculiar clustering in observed UHECR spectra at 10¹⁹, 2x10¹⁹, 4x10¹⁹ eV found recently by AGASA. Coincidence of clustered UHECR with highest gamma BLac sources, originated either by neutral and charged particles (Q=0,+1,-1) is well tuned to Z-Showering Scenario. Additional prompt TeVs signals occur offering a natural solution of growing Infrared-TeV cut-off paradoxes related to distant TeV BLac sources and a GRB at TeV energy. Electromagnetic Cascades tail may explain correlation found between GeV-EGRET Sources and UHECR. Such UHE v Astrophysics might trace near GZK energy into Horizontal Tau Air-Showers originated by the UHE v_τ Earth-Skimming in wide Corona Earth Crust around the observer; their consequent τ escape and decay upward in flight . These Upward and Horizontal τ Air-Showers UPTAUS, HORTAUS, monitor huge volumes from high mountains as well as observing from planes, balloons and satellites. HORTAUS from mountains observe corona masses at UHE v EeVs energies comparable to few km³, while from satellites at orbit altitudes, at GZK energies E_nu≥ 10¹⁹ eV, their corresponding Horizontal Corona Masses may even exceed 150 km³. The expected event rate may exceed a dozen of event a year in Z-WW Showering model from satellite.

Citation Download Citation

Daniele Fargion "Ultra high-energy neutrino at GZK energy: Z-WW showering in dark halo and tau airshowers emerging from the Earth", Proc. SPIE 4858, Particle Astrophysics Instrumentation, (3 March 2003); https://doi.org/10.1117/12.457958

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