2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/203446We report on a scaling test of several mesonic observables in the non-perturbatively O(a) improved Wilson theory with two flavors of dynamical quarks. The observables are constructed in a fixed volume of 2.4fm x (1.8fm)^3 with Schroedinger functional boundary conditions. No significant scaling violations are found. Using the kaon mass determined in \cite{cernI}, we update our estimate of the Lambda parameter to Lambda^(2)_{msbar}/m_K = 0.52(6).12 pages, 5 tables, 3 figures; one equation corrected; last line and caption of table 4 revisedHigh Energy Physics - Latticetext