Comparing Wilson and Clover quenched SU(3) spectroscopy with an improved gauge action

We present results of quenched SU(3) hadron spectroscopy comparing O( a) improved Wilson (Clover) fermions with conventional Wilson fermions. The configurations were generated using an O( a²) improved 6-link SU(3) pure gauge action at β's corresponding to lattice spacings of 0.16, 0.18, 0.21, 0.26, 0.34, and 0.42 fm. We find evidence that fermionic scaling violations are consistent with O( a²) for Clover and O( a) with a nonnegligible O( a²) term for standard Wilson fermions. This latter mixed ansatz makes a reliable continuum extrapolation problematic for Wilson fermions. We also find that the slope of the scalingviolations is roughly 250 MeV fof both Wilson and Clover fermions