  We explore the Gell-Mann--Okubo mass relation among the octet baryons using
fully-dynamical, mixed-action (domain-wall on rooted-staggered) lattice QCD
calculations at a lattice spacing of b ~ 0.125 fm and pion masses of m_pi ~ 290
MeV, 350 MeV, 490 MeV and 590 MeV. Deviations from the Gell-Mann--Okubo mass
relation are found to be small at each quark mass.

High Energy Physics - Lattice;High Energy Physics - Phenomenology;Nuclear Theory