Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-11
Phys.Rev. D73 (2006) 055001
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages. Reference added, one formula corrected
Scientific paper
10.1103/PhysRevD.73.055001
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 $\theta_A$. It also relates the smallness of $V_{cb}$ with the largeness of $\theta_A$. 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.
Bajc Borut
Melfo Alejandra
Senjanovi'{c} Goran
Vissani Francesco
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