Connecting Neutrino Masses, Dark Matter and Leptogenesis from Δ(54) Flavor Symmetry with Triple Inverse Seesaw

This study explores an extended [Formula: see text] flavor symmetry model with two higgs doublets that utilizes the triple inverse seesaw mechanism to generate neutrino masses. The model accommodates current neutrino oscillation data by predicting a nonzero [Formula: see text], an upper-octant [Formula: see text], and viable CP-violation parameters. Additionally, it addresses cosmological constraints by evaluating dark matter relic abundance and active-dark matter mixing. Finally, we demonstrate that TeV-scale resonant leptogenesis with flavor effects successfully generates the observed baryon asymmetry of universe (BAU), [Formula: see text] for [Formula: see text] and a mass splitting of [Formula: see text].