Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-05-11
Phys.Rev.D62:103007,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, Revtex, 5 figures included with epsfig, remarks added in section II and section IV, some references updated, to appe
Scientific paper
10.1103/PhysRevD.62.103007
Several cosmologically distant astrophysical sources may produce high-energy cosmic neutrinos (E \geq 10^6 GeV) of all flavors above the atmospheric neutrino background. We study the effects of vacuum neutrino mixing in three flavor framework on this cosmic neutrino flux. We also consider the effects of possible mixing between the three active neutrinos and the (fourth) sterile neutrino with or without Big-Bang nucleosynthesis constraints and estimate the resulting final high-energy cosmic neutrino flux ratios on earth compatible with currently existing different neutrino oscillation hints in a model independent way. Further, we discuss the case where the intrinsic cosmic neutrino flux does not have the standard ratio.
Athar Husain
Jezabek Marek
Yasuda Osamu
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