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Comparison of high-energy galactic and atmospheric tau neutrino flux | | H. Athar
; Kingman Cheung
; Guey-Lin Lin
; Jie-Jun Tseng
; | | Date: |
17 Dec 2001 | | Journal: | Astropart.Phys. 18 (2003) 581-592 | | Subject: | hep-ph astro-ph hep-ex | | Affiliation: | NCTS, NCTU), Kingman Cheung (NCTS), Guey-Lin Lin (NCTU), Jie-Jun Tseng (NCTU | | 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
u_{ au} 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
u_{ au} flux is coming from the oscillation of the galactic
u_{mu} flux. For the intrinsic atmospheric
u_{ au} flux, we extend the validity of a previous calculation from E < 10^6 GeV up to E < 10^11 GeV. The oscillated atmospheric
u_{ au} flux is, on the other hand, rather suppressed. We find that, for 10^3 < E/GeV < 5cdot 10^7, the oscillated
u_{ au} flux along the galactic plane dominates over the maximal intrinsic atmospheric
u_{ au} flux, i.e., the flux along the horizontal direction. We also briefly mention the presently envisaged prospects for observing these high-energy tau neutrinos. | | Source: | arXiv, hep-ph/0112222 | | Services: | Forum | Review | PDF | Favorites | |
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