Domain wall QCD with physical quark masses

We present results for several light hadronic quantities (f_, f₊, B₊, mₔ₃, mₒ, t₀^1/2, w₀) obtained from simulations of 2+1 flavor domain wall lattice QCD with large physical volumes and nearly physical pion masses at two lattice spacings. We perform a short, O (3) %, extrapolation in pion mass to the physical values by combining our new data in a simultaneous chiral/continuum ``global fit'' with a number of other ensembles with heavier pion masses. We use the physical values of m_, m₊ and m_ to determine the two quark masses and the scale---all other quantities are outputs from our simulations. We obtain results with subpercent statistical errors and negligible chiral and finite-volume systematics for these light hadronic quantities, including f_=130. 2 (9) MeV; f₊=155. 5 (8) MeV; the average up/down quark mass and strange quark mass in the MS scheme at 3 GeV, 2. 997 (49) and 81. 64 (1. 17) MeV respectively; and the neutral kaon mixing parameter, B₊, in the renormalization group invariant scheme, 0. 750 (15) and the MS scheme at 3 GeV, 0. 530 (11).