Non-perturbative renormalization of the ΔS = 2 four-fermion operator and the heavy-light static axial current

We apply a recently introduced non-perturbative renormalization method to two types of lattice operators: the Δ S = 2 four fermion operator and the heavy-light static axial current, which are relevant for the physics of K and B mesons respectively. The results of the non-perturbative calculations of the renormalization constants are compared with the corresponding perturbative ones.