Model comparison of Delta and Omega masses in a covariant Faddeev   approach
  We compute the vector-meson, nucleon and delta/omega-baryon masses and their evolution with the current-quark mass using a covariant generalized Bethe-Salpeter equation approach. The interaction kernel is truncated to a dressed gluon exchange. We study the model dependence of our results with the quark-gluon dressing to assess the validity of the truncation. 
Helios Sanchis-Alepuz, Reinhard Alkofer, Gernot Eichmann and Richard   Williams
hep-ph nucl-th