Deviations from Bimaximal Neutrino Mixing

Details Deviations from Bimaximal Neutrino Mixing Deviations from Bimaximal Neutrino Mixing

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005iche.conf..275r&link_type=abstract

HIGH ENERGY PHYSICS, ICHEP 2004. Proceedings of the 32nd International Conference. Held 16-22 August 2004 in Beijing, China. Edi

Physics

High Energy Physics

Scientific paper

Neutrino mixing is described by one small (possibly zero) and two large (one possibly maximal) angles. This makes the bimaximal mixing scenario a valid zeroth order scheme. Since however solar neutrino mixing is non-maximal by close to 6σ, deviations from this scheme have to be considered. First we give a useful parameterization of these deviations. Using that the PMNS matrix is given by U = U lepdag Uν , where Ulep stems from diagonalizing the charged lepton mass matrix and Uν, diagonalizes the neutrino mass matrix, we discuss deviations stemming from charged lepton mixing when the matrix Uν is assumed to be of bimaximal form. We generalize the procedure to a priori non-maximal atmospheric neutrino mixing in Uν as predicted by the flavor symmetry Le - Lμ - Lτ.

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