A renormalizable SO(10) GUT scenario with spontaneous CP violation

Details A renormalizable SO(10) GUT scenario with spontaneous CP violation A renormalizable SO(10) GUT scenario with spontaneous CP violation

2006-12-11

arxiv.org/abs/hep-ph/0612132v1

Eur.Phys.J.C51:721-729,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, two eps figures

Scientific paper

10.1140/epjc/s10052-007-0324-5

We consider fermion masses and mixings in a renormalizable SUSY SO(10) GUT with Yukawa couplings of scalar fields in the representation 10 + 120 + 126 bar. We investigate a scenario defined by the following assumptions: i) A single large scale in the theory, the GUT scale. ii) Small neutrino masses generated by the type I seesaw mechanism with negligible type II contributions. iii) A suitable form of spontaneous CP breaking which induces hermitian mass matrices for all fermion mass terms of the Dirac type. Our assumptions define an 18-parameter scenario for the fermion mass matrices for 18 experimentally known observables. Performing a numerical analysis, we find excellent fits to all observables in the case of both the normal and inverted neutrino mass spectrum.

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