engleski

Leptoquark mechanism of neutrino masses within the grand unification framework

We demonstrate the viability of the one-loop neutrino mass mechanism within the framework of grand unification when the loop particles comprise scalar leptoquarks (LQs) and quarks of the matching electric charge. This mechanism can be implemented in both supersymmetric and non- supersymmetric models and requires the presence of at least one LQ pair. We consider two distinct regimes for the LQ masses in our analysis. The first regime calls for very heavy LQs in the loop. Second regime corresponds to the collider accessible LQs in the neutrino mass loop. We provide a complete list of renormalizable operators that yield necessary mixing of all aforementioned LQ pairs using the language of SU(5). We furthermore discuss several possible embeddings of this mechanism in SU(5) and SO(10) gauge groups.

neutrino masses ; leptoquarks ; grand unification theory

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