The light baryon spectrum calculated with 2 + 1 flavors of domain wall fermions

Preliminary results for the light baryon spectrum computed in an on-going QCD simulation using 2+1 flavors of domain wall fermions and the Iwasaki gauge action are presented and discussed. Lattice sizes 243×64 and 323×64 with spacings 0.114 and∼ 0.08 fm are used in the calculation. The physical spatial size is thus 2.74 fm and ∼ 2.6 fm, respectively. The degenerate light quarks have masses down to ≈ 0.13, in units of the physical strange quark mass. We present preliminary fits of the nucleon mass, including next-to-leading order heavy baryon chiral perturbation theory, which works reasonably well.