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Yukawa sector in non-supersymmetric renormalizable SO(10)

Borut Bajc·Alejandra Melfo·Goran Senjanovic·Francesco Vissani
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Abstract

We discuss the ordinary, non-supersymmetric SO(10) as a theory of fermion masses and mixings. We construct two minimal versions of the Yukawa sector based on $\bar{126}_H $ and either $10_H$ or $120_H$. The latter case is of particular interest since it connects the absolute neutrino mass scale with the size of the atmospheric mixing angle $θ_A$. It also relates the smallness of $V_{cb}$ with the largeness of $θ_A$. These results are based on the analytic study of the second and third generations. Furthermore, we discuss the structure of the light Higgs and the role of the Peccei-Quinn symmetry for dark matter and the predictivity of the theory.

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Borut Bajc, Alejandra Melfo, Goran Senjanovic, Francesco Vissani. 2005-11-01. Yukawa sector in non-supersymmetric renormalizable SO(10). https://doi.org/10.1103/physrevd.73.055001

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