1206.6886 (Davide Meloni et al.)

Leptonic CP violation and mixing patterns at neutrino telescopes    [PDF]

Davide Meloni, Tommy Ohlsson

With the advent of the recent measurements in neutrino physics, we investigate the role of high-energy neutrino flux ratios at neutrino telescopes for the possibility of determining the leptonic CP-violating phase \delta and the underlying pattern of the leptonic mixing matrix. We find that, even considering the current uncertainties on the neutrino mixing parameters, the flux ratios show a dependence of O(10 %) on the CP-violating phase, and for optimistic uncertainties on the flux ratios less than 10 %, they can be used to distinguish between CP-conserving and CP-violating values of the phase at 2\sigma in a non-vanishing interval around the maximal value |\delta|=\pi/2. We also show that the correlations existing among the flux ratios can be useful to discriminate different classes of models based on tri-bi-maximal and bi-maximal mixing patterns.

View original: http://arxiv.org/abs/1206.6886