Non-perturbatively renormalised light quark masses from a lattice simulation with image Original Research Article

We present results for the light quark masses obtained from a lattice QCD simulation with image degenerate Wilson dynamical quark flavours. The sea quark masses of our lattice, of spacing image, are relatively heavy, i.e., they cover the range corresponding to image. After implementing the non-perturbative RI-MOM method to renormalise quark masses, we obtain image, and image, which are about 15% larger than they would be if renormalised perturbatively. In addition, we show that the above results are compatible with those obtained in a quenched simulation with a similar lattice.