6533b85efe1ef96bd12bff03
RESEARCH PRODUCT
Structure and prospects of the simplest SO(10) GUTs
Michal MalinskyStefano BertoliniLuca Di Luziosubject
PhysicsParticle physicsSO(10)010308 nuclear & particles physicsProton decayHigh Energy Physics::PhenomenologyGrand unification; Neutrino masses; SO(10)Structure (category theory)FOS: Physical sciencesNeutrino massesParameter space01 natural sciencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Seesaw mechanismOrders of magnitude (time)Grand unification0103 physical sciencesHiggs bosonSymmetry breakingSO(10)010306 general physicsdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-10-14 |