Probing the nature of the seesaw mechanism in renormalizable SO(10)

• DOI: 10.1103/physrevd.70.093002
• Publication Date: 2004-11-02T16:42:27Z
• Authors: Borut Bajc; Goran Senjanović; Francesco Vissani
• Keywords: Seesaw mechanism; Unification; Dominance (genetics); SO(10)

We study the nature of seesaw mechanism in context renormalizable SO(10) with Higgs fields 10-plets and $\overline{126}$-plet representations, paying special attention to supersymmetric case. discuss analytically situation for second third generations fermions ignoring any $CP$ violating phase. It is shown that $b\ensuremath{-}\ensuremath{\tau}$ unification large atmospheric mixing angle strongly disfavor dominance type I seesaw.