  We present a model to explain the Standard Model flavor hierarchy. Our model
is based on explicit smooth confinement (namely confinement without chiral
symmetry breaking in a supersymmetric gauge theory) at an intermediate energy
scale, before the electroweak symmetry breaking by the Higgs condensation at
lower energy. In our context, the smooth confinement preserves the SU(3) and
the chiral SU(2)$_L\times$ U(1)$_Y$ symmetry in a supersymmetric Standard
Model, while this internal symmetry becomes dynamically gauged in the end. In
contrast to Razamat-Tong's symmetric mass generation model also preserving the
$G_{\rm SM} \equiv$ SU(3)$_C\times$ SU(2)$_L\times$ U(1)$_Y$ internal symmetry,
our model introduces different matter contents with a different kind of
superpotential deformation irrelevant at UV, which further induces Yukawa-Higgs
terms marginal at IR, breaking the $G_{\rm SM}$ down to SU(3)$_C$ and the
electromagnetic U(1)$_{\rm EM}$ only when Higgs condenses. In our model, the IR
fermions in the first and second families are composite of UV fields, while the
third family elementary fermions match between UV and IR. The smallness of the
first and second family fermion masses is explained by the exponential
hierarchy between the cutoff scale and the smooth confinement scale via
dimensional transmutation. As a result, our UV Lagrangian only contains the
natural parameters close to the order one.
