Third-family quark-lepton Unification and electroweak precision tests

We analyze the compatibility of hypothesis third-family quark-lepton unification at TeV scale with electroweak precision data, lepton flavor universality tests, and high-$p_T$ constraints. work within framework UV complete non-universal 4321 gauge model, which is matched one loop to Standard Model Effective Field Theory. For consistency, all observables are also computed effective field theory. At tree level, most sizeable corrections $W\rightarrow \tau\nu_\tau$ $Z \to \nu_\tau \nu_\tau$ due integrating out a pseudo-Dirac singlet fermion required by model for neutrino mass generation. new colored states generate large flavor-universal contributions via leading- next-to-leading log running effects, yielding significant improvement in fit (including an increase $W$-boson mass). These effects cannot be decoupled if addresses charged-current $B$-meson anomalies. Overall, we find good between data sets, while simultaneously satisfying low- high-energy