Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-12-21
Phys.Rev.D75:125017,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages, 7 figures, LaTeX. Final version published in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.75.125017
In this paper, we derive simple and general perturbative formulas for the flavor flux ratios $R_{\alpha\beta}=\phi_{\nu_\alpha}/\phi_{\nu_\beta}$ that could be measured at neutrino telescopes. We discuss in detail the role of the uncertainties of the neutrino mixing parameters showing that they have to be seriously taken into account in any realistic discussion about flavor measurements at neutrino telescopes. In addition, we analyze the impact of such uncertainties in telling the standard neutrino oscillation framework from scenarios involving, e.g., neutrino decay and we find that the ratio $R_{e\mu}$ is the most sensitive one to "new physics" effects beyond the Standard Model. We also compute the more realistic muon-to-shower ratio for a particular configuration of the IceCube experiment, observing that using this experimental quantity a clear separation between standard and non-standard neutrino physics cannot be obtained.
Meloni Davide
Ohlsson Tommy
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