Perturbative renormalization for static and domain-wall bilinears and   four-fermion operators with improved gauge actions
  We calculate one-loop renormalization factors for heavy-light bilinears as well as four-fermion operators relevant for $B^{0} - \bar{B}^{0}$ mixing calculations on the lattice. We use the static approximation for heavy quarks and the domain-wall formulation for light quarks. We present results for different choices of improved gauge action. 
Oleg Loktik and Taku Izubuchi