2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/202519We compute the hadron mass spectrum, the quark masses and the meson decay constants in quenched lattice QCD with non-perturbatively $O(a)$ improved Wilson fermions. The calculations are done for two values of the coupling constant, $β= 6.0$ and 6.2, and the results are compared with the predictions of ordinary Wilson fermions. We find that the improved action reduces lattice artifacts as expected.High Energy Physics - LatticeHigh Energy Physics - Phenomenologytext