One-loop renormalization factors and mixing coeffecients of bilinear   quark operators for improved gluon and quark actions
  We calculate one-loop renormalization factors and mixing coefficients of bilinear quark operators for a class of gluon actions with six-link loops and O(a)-improved quark action. The calculation is carried out by evaluating on-shell Green's functions of quarks and gluons in the standard perturbation theory. We find a general trend that finite parts of one-loop coefficients are reduced approximately by a factor two for the renormalization-group improved gluon actions compared with the case of the standard plaquette gluon action. 
Sinya Aoki, Kei-ichi Nagai, Yusuke Taniguchi and Akira Ukawa