Nonperturbative renormalization of overlap quark bilinears on 2 + 1-flavor domain wall fermion configurations.

We present renormalization constants of overlap quark bilinear operators on 2 + 1-flavor domain wall fermion configurations. This setup is being used by the X QCD Collaboration in calculations of physical quantities such as strangeness in the nucleon and the strange and charm quark masses. The scaleindependent renormalization constant for the axial-vector current is computed using the Ward identity. The renormalization constants for scalar, pseudoscalar, and vector currents are calculated in the RI-MOM scheme. Results in the MS scheme are also given. The step scaling function of quark masses in the RI-MOM scheme is computed as well. The analysis uses, in total, six different ensembles of three sea quarks, each on two lattices with sizes 24³ x 64 and 32³ x 64 at spacings a = (1.73 GeV)-1 and (2.28 GeV)-1, respectively. [ABSTRACT FROM AUTHOR]