Confusing Sterile Neutrinos with Deviation from Tribimaximal Mixing at Neutrino Telescopes

Details Confusing Sterile Neutrinos with Deviation from Tribimaximal Mixing at Neutrino Telescopes Confusing Sterile Neutrinos with Deviation from Tribimaximal Mixing at Neutrino Telescopes

2007-06-04

arxiv.org/abs/0706.0399v2

Phys.Rev.D76:113002,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, version to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.76.113002

We expound the impact of extra sterile species on the ultra high energy neutrino fluxes in neutrino telescopes. We use three types of well-known flux ratios and compare the values of these flux ratios in presence of sterile neutrinos, with those predicted by deviation from the tribimaximal mixing scheme. We show that in the upcoming neutrino telescopes, its easy to confuse between the signature of sterile neutrinos with that of the deviation from tribimaximal mixing. We also show that if the measured flux ratios acquire a value well outside the range predicted by the standard scenario with three active neutrinos only, it might be possible to tell the presence of extra sterile neutrinos by observing ultra high energy neutrinos in future neutrino telescopes.

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