Simplified Unitarity Triangles for the Lepton Sector
James D. Bjorken, P. F. Harrison, W. G. Scott
Abstract
Encouraged by the latest SNO results, we consider the lepton mixing matrix in the approximation that the nu2 mass eigenstate is trimaximally (democratically) mixed. This suggests a new parameterization of the remaining mixing degrees of freedom, which eschews mixing angles, dealing instead, directly with the complex parameter Ue3 of the mixing matrix. Unitarity triangles then take a particularly simple form, which we hope will faciltate comparison with experiment.
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