We compute the hadron mass spectrum, the quark masses, and the meson decay constants in quenched lattice QCD with nonperturbatively $O\left(a\right)\mathrm{}$-improved Wilson fermions. The calculations are done for two values of the coupling constant $\beta =6.0\mathrm{}$ 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.

• Received 4 August 1997

DOI:https://doi.org/10.1103/PhysRevD.57.5562