  We consider the spin-zero spectrum of a strongly coupled gauge theory. In
particular, we focus on the dynamical mass of the isosinglet scalar resonance
in the presence of a four-fermion interaction external to the gauge dynamics.
This is motivated by the extended technicolor framework for dynamical
electroweak symmetry breaking. Applying the large-$N$ limit, we sum all the
leading-order contributions, and find that the corrections to the mass of the
isosinglet scalar resonance can be large, potentially reducing its value from
${\cal O}(1)$ TeV to the observed value of 125 GeV.

High Energy Physics - Phenomenology;High Energy Physics - Lattice