QLC relation and neutrino mass hierarchy

Details QLC relation and neutrino mass hierarchy QLC relation and neutrino mass hierarchy

2004-12-02

arxiv.org/abs/hep-ph/0412038v2

Phys.Rev. D71 (2005) 033004

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 0 figures

Scientific paper

10.1103/PhysRevD.71.033004

Latest measurements have revealed that the deviation from a maximal solar mixing angle is approximately the Cabibbo angle, i.e. QLC relation. We argue that it is not plausible that this deviation from maximality, be it a coincidence or not, comes from the charged lepton mixing. Consequently we have calculated the required corrections to the exactly bimaximal neutrino mass matrix ansatz necessary to account for the solar mass difference and the solar mixing angle. We point out that the relative size of these two corrections depends strongly on the hierarchy case under consideration. We find that the inverted hierarchy case with opposite CP parities, which is known to guarantee the RGE stability of the solar mixing angle, offers the most plausible scenario for a high energy origin of a QLC-corrected bimaximal neutrino mass matrix. This possibility may allow us to explain the QLC relation in connection with the origin of the charged fermion mass matrices.

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