Quenched Light Hadron Spectrum

Abstract

We present results of a large-scale simulation for the flavor nonsinglet light hadron spectrum in quenched lattice QCD with the Wilson quark action. Hadron masses are calculated at four values of lattice spacing in the range $a\approx 0.1–0.05\mathrm{fm}$ on lattices with a physical extent of 3 fm at five quark masses corresponding to $m_{\pi }/m_{\rho }\approx 0.75–0.4$. The calculated spectrum in the continuum limit shows a systematic deviation from experiment, though the magnitude of deviation is contained within 11%. Results for decay constants and light quark masses are also reported.