Chiral corrections to the axial charges of the octet baryons from quenched QCD

We calculate one-loop correction to the axial charges of the octet baryons using quenched chiral perturbation theory, in order to understand chiral behavior of the axial charges in quenched approximation to quantum chromodynamics (QCD). In contrast to regular behavior of the full QCD chiral perturba...

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Bibliographic Details
Published in:arXiv.org 1996-08
Main Authors: Kim, Myunggyu, Kim, Seyong
Format: Article
Language:English
Subjects:
Baryons
Chiral dynamics
Perturbation theory
Quantum chromodynamics
Quarks
Quenching
Online Access:Get full text
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Summary:We calculate one-loop correction to the axial charges of the octet baryons using quenched chiral perturbation theory, in order to understand chiral behavior of the axial charges in quenched approximation to quantum chromodynamics (QCD). In contrast to regular behavior of the full QCD chiral perturbation theory result, \(c_0+c_{l2}m_\pi^2\,\ln{m_\pi^2}+\cdots\), we find that the quenched chiral perturbation theory result, \(c_0^Q+(c_{l0}^Q+c_{l2}^Qm_\pi^2)\ln{m_\pi^2}+c_2^Q m_\pi^2+\cdots\), is singular in the chiral limit.
ISSN:2331-8422
DOI:10.48550/arxiv.9608091