PHENOMENOLOGY FROM LATTICE QCD

Abstract

I review two subject in which lattice simulations are making, or can make in the future, a significant contribution to particle physics phenomenology. The first subject is the evaluation of quantities which enter into the determination of the vertex A of the unitarity triangle from experimental measurements of decay rates and mixing amplitudes. These quantities include the form-factors for semileptonic B-decays, the leptonic decay constants of the B and Bs mesons and the B-parameters for [Formula: see text] and [Formula: see text] mixing and the corresponding parameter for [Formula: see text] mixing, BK. In the second part of this talk I will review the status and prospects for the evaluation of K → π π amplitudes and for the subsequent study of the Δ I = 1/2 rule and the evalution of ε′/ε.