Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-05-03
Nucl.Phys.B821:197-214,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, one figure added, references added, version to be published in Nucl. Phys. B
Scientific paper
10.1016/j.nuclphysb.2009.06.017
We examine the feasibility of deriving neutrino mixing parameters $\delta$ and $\theta_{13}$ from the cosmic neutrino flavor composition under the assumption that the flavor ratios of the cosmic neutrinos at the source were $F_{\nu_e}+F_{\bar{\nu}_e}:F_{\nu_\mu}+F_{\bar{\nu}_\mu}: F_{\nu_\tau}+F_{\bar{\nu}_\tau}=1:2:0$. We analyze various uncertainties that enter the derivation of $\delta$ and $\theta_{13}$ from the ratio of the shower-like to $\mu$-tracks events which is the only realistic source of information on the flavor composition at neutrino telescopes such as ICECUBE. We then examine to what extent the deviation of the initial flavor ratio from $1:2:0$ can be tested by measurement of this ratio at neutrino telescopes taking into account various sources of uncertainty.
Esmaili Arman
Farzan Yasaman
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