Electroweak flavour unification

We propose that the electroweak and flavour quantum numbers of Standard Model (SM) could be unified at high energies in an $SU(4)\times Sp(6)_L \times Sp(6)_R$ anomaly-free gauge model. All SM fermions are packaged into two fundamental fields, $\Psi_L \sim (\mathbf{4}, \mathbf{6}, \mathbf{1})$ $\Psi_R\sim \mathbf{1},\mathbf{6})$, thereby explaining origin three families fermions. The Higgs, being electroweakly charged, necessarily becomes charged also under when embedded UV It is therefore natural for its vacuum expectation value to couple only third family. other components Higgs fields presumed heavy. Extra scalars needed break this symmetry down SM, which can proceed via `flavour-deconstructed' groups; instance, we a pattern $Sp(6)_L \to \prod_{i=1}^3 SU(2)_{L,i} SU(2)_L$ left-handed factor. When heavy integrated out, realistic quark Yukawa couplings with in-built hierarchies naturally generated without any further ingredients, if assume various breaking condense different scales. CKM matrix compute not generic unitary matrix, but it precisely fit observed values.