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Abstract:
The mu-tau reflection symmetry (nu(e), nu(mu), nu(tau)) -> ((nu) over bar (e), (nu) over bar (mu), (nu) over bar (tau)) and the TM1 mixing (a Pontecorvo-Maki-Nakagawa-Sakata matrix with the first column fixed to the tribimaximal form) are both well compatible with experiments. If both approaches are simultaneously assumed, all lepton mixing parameters except for theta(13) are predicted. In particular, one expects maximal CP violation (vertical bar delta vertical bar = 90 degrees), maximal atmospheric mixing (theta(23) = 45 degrees), a slightly less-than-tribimaximal solar mixing angle (theta(12) approximate to 34 degrees), as well as values of 0 or pi for the two Majorana phases. We study the renormalization stability of this highly predictive framework when neutrino mass is described by an effective Weinberg operator and by the type I seesaw mechanism, both in the standard model and with supersymmetry.
