Light pseudoscalar mesons in a nonlocalSU(3)chiral quark model

2003/11/30 by A. Scarpettini, Alberto F. Scarpettini, D. Gómez Dumm +2 · 6 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.69.114018

published as Phys.Rev. D69 (2004) 114018 · 18 pages, 3 figures. New subsections included, references added. Mixing angles eta - eta' reanalyzed. Final version to appear in Phys. Rev. D

arxiv created 2004/04/16 · openalex publication_date 2004/06/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the properties of the light pseudoscalar mesons in a three-flavor chiral quark model with nonlocal separable interactions. We concentrate on the evaluation of meson masses and decay constants, considering both the cases of Gaussian and Lorentzian nonlocal regulators. The results are found to be in quite good agreement with the empirical values, in particular in the case of the ratio f_K/f_\ensuremathπ and the anomalous decay \ensuremathπ⁰\ensuremath→\ensuremathγ\ensuremathγ. In addition, the model leads to a reasonable description of the observed phenomenology in the \ensuremathη\ensuremath-\ensuremathη^\ensuremath' sector, even though it implies the existence of two significantly different state mixing angles.

Citations

• Dynamical Model of Elementary Particles Based on an Analogy with Superconductivity. I
• Instantons in QCD
• Dynamical Model of Elementary Particles Based on an Analogy with Superconductivity. II
• Review of particle properties
• Review of Particle Physics

Cited by

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• Strong-Interaction Matter under Extreme Conditions from Chiral Quark Models with Nonlocal Separable Interactions
• Pion radiative weak decays in nonlocal chiral quark models
• Aspects and consequences of a dressed-quark-gluon vertex
• Covariant nonlocal chiral quark models with separable interactions