Neutrino Mixing and Quark-Lepton Complementarity

Details Neutrino Mixing and Quark-Lepton Complementarity Neutrino Mixing and Quark-Lepton Complementarity

2004-05-11

arxiv.org/abs/hep-ph/0405088v3

Phys.Rev.D70:073009,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, version to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.70.073009

As a result of identification of the solution to the solar neutrino problem, a rather precise relation theta_{sun} + theta_C = pi/4 between the leptonic 1-2 mixing angle theta_{sun} and the Cabibbo angle has emerged. It would mean that the lepton and the quark mixing angles add up to the maximal, suggesting a deep structure by which quarks and leptons are interrelated. We refer the relation ``quark-lepton complementarity'' (QLC) in this paper. We formulate general conditions under which the QLC relation is realized. We then present several scenarios which lead to the relation and elaborate on phenomenological consequences which can be tested by the future experiments. We also discuss implications of the QLC relation for the quark-lepton symmetry and the mechanism of neutrino mass generation.

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