Light hadron and diquark spectroscopy in quenched QCD with overlap quarks on a large lattice

TL;DR

This study uses quenched QCD with overlap quarks on large lattices to compute light hadron masses, wave functions, and diquark correlations, demonstrating small scaling violations and providing insights into hadron structure.

Contribution

It presents new results for light hadron spectra and diquark correlations using overlap fermions on large lattices, with detailed numerical techniques and analysis.

Findings

Small scaling violations observed.

Light meson and baryon masses computed.

Diquark correlations analyzed.

Abstract

A simulation of quenched QCD with the overlap Dirac operator has been completed using 100 Wilson gauge configurations at beta = 6 on an 18^3 x 64 lattice and at beta = 5.85 on a 14^3 x 48 lattice, both in Landau gauge. We present results for light meson and baryon masses, meson final state "wave functions," and other observables, as well as some details on the numerical techniques that were used. Our results indicate that scaling violations, if any, are small. We also present an analysis of diquark correlations using the quark propagators generated in our simulation.