Light Hadron Masses in QCD with Valence Wilson Quarks at beta=6.25 from a Parallel PC Cluster

TL;DR

This paper reports on the calculation of light hadron masses in QCD using valence Wilson quarks on a parallel PC cluster, comparing results at different lattice sizes and couplings to improve continuum extrapolation.

Contribution

It introduces new lattice QCD results at a higher beta value with larger lattices, demonstrating the effectiveness of smearing techniques in spectrum calculations.

Findings

Masses of $ ho$, $ ho$, proton, and $ riangle$ are computed at $eta=6.25$.

Smearing techniques significantly improve spectral data quality.

Results facilitate continuum limit extrapolation.

Abstract

We present results for $\pi$, $\rho$ and proton and $\Delta$ masses from our recently built Pentium cluster. The previous results for quenched Wilson fermions by MILC and GF11 collaborations are compared at $\beta=6/g^2$=5.7 and 5.85 with the same parameters on the $8^3\times32$ lattice. New data are shown at $\beta$=6.25 on the $12^3\times36$ and $16^3\times32$ lattices. Such a larger $\beta$ value is useful for extrapolating the lattice results to the continuum limit. The smearing technique is systematically investigated and shown to greatly improve the spectrum data.