Abstract
We propose two schemes for the lepton mixing matrix U=Ul†Uν, where U=Ul refers to the charged sector, and Uν denotes the neutrino diagonalization matrix. We assume Uν to be CP conserving and its three angles to be connected with the Cabibbo angle in a simple manner. CP violation arises solely from the Ul, assumed to have the CKM form, Ul≃VCKM, suggested by unification. Oscillation parameters depend on a single parameter, leading to narrow ranges for the “solar” and “accelerator” angles θ12 and θ23, as well as for the CP phase, predicted as δCP∼±1.3π.
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