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$SO(10)$ Operator Analysis For $ν_μν_τ$ Oscillations

H. -C. Cheng·M. S. Gill·L. J. Hall
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Abstract

In grand unified theories the flavor mixing angles of leptons are related to those of quarks. In this paper we study SO(10) theories with a precise group theoretic relation at the GUT scale for mixing between the heaviest two generations: $\thetuto = κ\abs{\vcbo}$. A comprehensive operator search yields all possible cases where $κ$ is a group theory Clebsch. The resulting predictions for $ν_μν_τ$ oscillations are scaled from the grand to the weak scales. We find that all but one of the models which have such a relationship between $\thetuto$ and $\vcbo$, and are not already excluded, will be probed by the CHORUS and NOMAD experiments. A more precise mixing measurement, for example by the proposed P803 experiment, could distinguish between the models.

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H. -C. Cheng, M. S. Gill, L. J. Hall. 1993-07-15. $SO(10)$ Operator Analysis For $ν_μν_τ$ Oscillations. https://doi.org/10.1103/physrevd.49.4826

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