Flavor composition of ultrahigh energy neutrinos at source and at neutrino telescopes
- Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, 211019 Allahabad (India)
- Max-Planck-Institut fuer Kernphysik, Postfach 103980, D-69029 Heidelberg (Germany)
We parametrize the initial flux composition of high energy astrophysical neutrinos as ({phi}{sub e}{sup 0} ratio {phi}{sub {mu}}{sup 0} ratio {phi}{sub {tau}}{sup 0})=(1 ratio n ratio 0), where n characterizes the source. All usually assumed neutrino sources appear as limits of this simple parametrization. We investigate how precise neutrino telescopes can pin down the value of n. We furthermore show that there is a neutrino mixing scenario in which the ratio of muon neutrinos to the other neutrinos takes a constant value regardless of the initial flux composition. This occurs when the muon neutrino survival probability takes its minimal allowed value. The phenomenological consequences of this very predictive neutrino mixing scenario are given.
- OSTI ID:
- 21313448
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 80, Issue 11; Other Information: DOI: 10.1103/PhysRevD.80.113006; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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