Computation of the improvement coefficient $c_{\rm sw}$ to 1-loop with   improved gluon actions
  The coefficient $c_{\rm sw}$ appearing in the Sheikholeslami-Wohlert improved action is computed to one loop perturbation theory for improved gluon actions including six-link loops. The O($a$) improvement coefficients for the dimension three isovector composite operators bilinear in the quark fields are also computed to one loop order of perturbation theory with degenerate non-vanishing quark masses. 
Sinya Aoki (Institute of Physics, University of Tsukuba), Roberto   Frezzotti and Peter Weisz (Max-Planck-Institut fuer Physik)