Two-loop additive mass renormalization with clover fermions and Symanzik improved gluons

A. Skouroupathis, M. Constantinou, H. Panagopoulos

We calculate the critical value of the hopping parameter, ${\kappa }_c$, in Lattice QCD, up to two loops in perturbation theory. We employ the Sheikholeslami-Wohlert (clover) improved acti…