  We present results of the first fully-dynamical lattice QCD determination of
hyperon-nucleon scattering. One s-wave phase shift was determined for n Lambda
scattering in both spin-channels at pion masses of 350, 490, and 590 MeV, and
for n Sigma- scattering in both spin channels at pion masses of 490, and 590
MeV. The calculations were performed with domain-wall valence quarks on
dynamical, staggered gauge configurations with a lattice spacing of b ~ 0.125
fm.
