Quenched QCD near the chiral limit
M. Gockeler, R. Horsley, D. Petters, D. Pleiter, P.E.L. Rakow, and G., Schierholz
TL;DR
This paper investigates quenched QCD with light quarks using improved fermions, focusing on the existence of quenched chiral logarithms and identifying a safe region for chiral extrapolations near the strange quark mass.
Contribution
It provides a numerical analysis of quenched QCD near the chiral limit, emphasizing the role of quenched chiral logarithms and establishing a reliable region for chiral extrapolations.
Findings
Identification of a safe region for chiral extrapolations at and above the strange quark mass.
Evidence supporting the existence of quenched chiral logarithms.
Use of O(a) improved fermions enhances the accuracy of the numerical study.
Abstract
A numerical study of quenched QCD for light quarks is presented using O(a) improved fermions. Particular attention is paid to the possible existence and determination of quenched chiral logarithms. A `safe' region to use for chiral extrapolations appears to be at and above the strange quark mass.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research · Particle physics theoretical and experimental studies