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arXiv · hep-ph/0112222

Comparison of high-energy galactic and atmospheric tau neutrino flux

H. Athar·Kingman Cheung·Guey-Lin Lin·Jie-Jun Tseng
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Abstract

We compare the tau neutrino flux arising from the galaxy and the earth atmosphere for 10^3 < E/GeV < 10^11. The intrinsic and oscillated tau neutrino fluxes from both sources are calculated. The intrinsic galactic ν_τ flux (E > 10^3 GeV) is calculated by considering the interactions of high-energy cosmic-rays with the matter present in our galaxy, whereas the oscillated galactic ν_τ flux is coming from the oscillation of the galactic ν_μ flux. For the intrinsic atmospheric ν_τ flux, we extend the validity of a previous calculation from E < 10^6 GeV up to E < 10^11 GeV. The oscillated atmospheric ν_τ flux is, on the other hand, rather suppressed. We find that, for 10^3 < E/GeV < 5\cdot 10^7, the oscillated ν_τ flux along the galactic plane dominates over the maximal intrinsic atmospheric ν_τ flux, i.e., the flux along the horizontal direction. We also briefly mention the presently envisaged prospects for observing these high-energy tau neutrinos.

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H. Athar, Kingman Cheung, Guey-Lin Lin, Jie-Jun Tseng. 2002-03-06. Comparison of high-energy galactic and atmospheric tau neutrino flux. https://doi.org/10.1016/s0927-6505(02)00183-4

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