Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-07-16
Phys.Lett. B598 (2004) 1-7
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 5 figures (to appear in PLB)
Scientific paper
10.1016/j.physletb.2004.07.022
Neutrinos with energy greater than GeV are copiously produced in the p(A,p) interactions occurring in several astrophysical sites such as (i) the earth atmosphere, (ii) our galactic plane as well as in (iii) the galaxy clusters. A comparison of the tau and mu neutrino flux in the presence of neutrino oscillations from these three representative astrophysical sites is presented. It is pointed out that the non-atmospheric tau neutrino flux starts dominating over the downward going atmospheric tau neutrino flux for neutrino energy E as low as 10 GeV. This energy value is much lower than the energy value, E \geq 5\times 10^4 GeV, estimated for the dominance of the non-atmospheric mu neutrino flux, in the presence of neutrino oscillations. Future prospects for possible observations of non-atmospheric tau neutrino flux are briefly mentioned.
Athar Husain
Kim Chang Sub
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