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Simplified Unitarity Triangles for the Lepton Sector

James D. Bjorken·P. F. Harrison·W. G. Scott
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Abstract

Encouraged by the latest SNO results, we consider the lepton mixing matrix in the approximation that the nu_2 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 U_e3 of the mixing matrix. Unitarity triangles then take a particularly simple form, which we hope will faciltate comparison with experiment.

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James D. Bjorken, P. F. Harrison, W. G. Scott. 2006-09-14. Simplified Unitarity Triangles for the Lepton Sector. https://doi.org/10.1103/physrevd.74.073012

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