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

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.

28 LaTeX pages, 41 figures, v2: minor updates, version published in JHEP

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• Light Hadron Masses from Lattice QCD
• Two-flavor QCD simulation with exact chiral symmetry
• K^0-\bar K^0 mixing beyond the standard model and CP-violating electroweak penguins in quenched QCD with exact chiral symmetry
• Diquark correlations in baryons on the lattice with overlap quarks
• Comparison of gluon flux-tube distributions for quark-diquark and quark-antiquark hadrons
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• Spontaneous chiral symmetry breaking in QCD:a finite-size scaling study on the lattice
• Diquarks: a QCD sum rule perspective
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