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arXiv · 1210.3789

Structure and prospects of the simplest SO(10) GUTs

Stefano Bertolini·Luca Di Luzio·Michal Malinsky
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Abstract

We recapitulate the latest results on the class of the simplest SO(10) grand unified models in which the GUT-scale symmetry breaking is triggered by an adjoint Higgs representation. We argue that the minimal survival approximation traditionally used in the GUT- and seesaw-scale estimates tends to be blind to very interesting parts of the parameter space in which some of the intermediate-scale states necessary for non-supersymmetric unification of the SM gauge couplings can be as light as to leave their imprints in the TeV domain. The stringent minimal-survival-based estimates of the B-L scale are shown to be relaxed by as much as four orders of magnitude, thus admitting for a consistent implementation of the standard seesaw mechanism even without excessive fine-tuning implied by the previous studies. The prospects of the minimal renormalizable SO(10) GUT as a potential candidate for a well-calculable theory of proton decay are discussed in brief.

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Stefano Bertolini, Luca Di Luzio, Michal Malinsky. 2012-10-14. Structure and prospects of the simplest SO(10) GUTs. https://doi.org/10.1063/1.4807369

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