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We perform a phenomenological analysis of the observable consequences on theextended scalar sector of the SMASH (Standard Model - Axion - Seesaw - Higgsportal inflation) framework. We solve the vacuum metastability problem in asuitable region of SMASH scalar parameter spaces and discuss the one-loopcorrection to triple Higgs coupling $\lambda_{HHH}$. We also find that thecorrect neutrino masses and mass squared differences and baryonic asymmetry ofthe universe can arise from this model and consider running of the Yukawacouplings of the model. In fact, we perform a full two-loop renormalizationgroup analysis of the SMASH model.

Neutrinos, vacuum stability and triple Higgs coupling in SMASH