Speaker
Description
The minimal renormalizable realization of $SO(10)$ model is an intriguing candidate for realistic extension of the Standard model. As the $SO(10)$ symmetry breaking is caused by the adjoint representation, the dominant GUT-scale-influencing gravitational effects are suppressed allowing for significantly improved proton lifetime calculations.
We present results of the thorough model’s parameter space analysis including one-loop quantum effects required in the physically relevant scenarios. We show that the model is consistent only in a narrow region of the parameter space supporting breaking chains with $SU(3)_c \times SU(2)_L \times SU(2)_R \times U(1)_{B-L}$ or $SU(4)_C \times SU(2)_L \times U(1)_R$ intermediate symmetry with the preference for the latter one.
This analysis also involved discussion of perturbativity constraints employing one-loop corrections to the scalar masses and one-loop beta functions of dimensionless scalar couplings.
