Gauge Couplings Evolution from the Standard Model, through Pati–Salam Theory, into E8 Unification of Families and Forces

We explore the potential of ultimate unification of the Standard Model matter and gauge sectors into a single E8 superfield in ten dimensions via an intermediate Pati–Salam gauge theory. Through a consistent realisation of a T6/(Z6×Z2×Z2) orbifolding procedure and renormalisation group evolution of gauge couplings, we establish several novel benchmark scenarios for New Physics that are worth further phenomenological exploration.