Light quark masses for dynamical, non-perturbatively O(a) improved   Wilson fermions
  We present results for the light quark masses in lattice QCD with two degenerate flavours of dynamical fermions. We used configurations generated by the UKQCD and QCDSF collaborations at six different combinations of beta and kappa_sea. 
D. Pleiter, QCDSF Collaboration, UKQCD Collaboration