title: B-tau unification and large atmospheric mixing: a case for a noncanonical seesaw mechanism.
abstract: We study the second and third generation masses in the context of the minimal renormalizable SO(10) theory. We show that if the seesaw takes the noncanonical (type II) form, large atmospheric neutrino mixing angle requires b-tau unification.
authors.affiliation: J. Stefan Institute, 1001 Ljubljana, Slovenia.
authors.forename: Borut
authors.initials: B
authors.lastname: Bajc
authors.forename: Goran
authors.initials: G
authors.lastname: Senjanović
authors.forename: Francesco
authors.initials: F
authors.lastname: Vissani