Quenched $SU(3)$ hadron spectroscopy using improved fermionic and gauge actions

TL;DR

This study investigates quenched $SU(3)$ hadron spectra using improved Wilson fermions and gauge actions across various lattice spacings, finding that scaling violations align with $ ext{order}(a^2)$ errors, indicating improved accuracy.

Contribution

The paper demonstrates the effectiveness of $ ext{order}(a)$ improved Wilson fermions and $ ext{order}(a^2)$ improved gauge actions in quenched $SU(3)$ hadron spectroscopy, providing evidence of reduced scaling violations.

Findings

Fermionic scaling violations are consistent with $ ext{order}(a^2)$ errors.

Configurations generated at multiple lattice spacings.

Evidence supports improved accuracy of the methods.

Abstract

We present results of quenched $SU(3)$ hadron spectroscopy using $\order(a)$ improved Wilson fermions. The configurations were generated using an $\order(a^2)$ improved 6-link $SU(3)$ pure gauge action at $\beta$'s corresponding to lattice spacings of $0.43$, $0.25$, $0.20$, $0.18$, and $0.15$ fm. We find evidence that fermionic scaling violations are consistent with $\order(a^2)$ errors.