Meson-Baryon Scattering in Lattice QCD

Aaron Torok
University of New Hampshire

The calculation of hadron-hadron scattering lengths using Lattice QCD has
reached a high level of precision with pions. Calculating meson-baryon
scattering lengths is more challenging. We have calculated the pion-sigma,
and pion-cascade scattering lengths using mixed-action Lattice QCD with
the MILC gauge ensembles. SU(2) chiral perturbation theory was used for
the extrapolation to the physical pion mass.