Initial studies of bound states in light-front QCD

We present the first numerical QCD bound state calculation based on a renormalization-group-improved light-front Hamiltonian formalism. The QCD Hamiltonian is determined to second order in the coupling, and it includes two-body confining interactions. We make a momentum expansion, obtaining an equal-time-like Schrödinger equation. This is solved for quark-antiquark constituent states, and we obtain a set of self-consistent parameters by fitting $B$ meson spectra.