Vector and axial vector mesons in a nonlocal chiral quark model

TL;DR

This paper investigates nonstrange vector and axial vector mesons using a nonlocal chiral quark model, fitting parameters to lattice QCD data and experimental results, achieving good agreement with observed meson properties.

Contribution

It introduces a nonlocal chiral quark model with parameters fitted to lattice QCD, providing a detailed analysis of vector and axial vector mesons.

Findings

Numerical results align well with experimental meson data.

Model parameters are effectively constrained by lattice QCD results.

The approach offers a consistent description of meson phenomenology.

Abstract

Basic features of nonstrange vector and axial vector mesons are analyzed in the framework of a chiral quark model that includes nonlocal four fermion couplings. Unknown model parameters are determined from some input values of masses and decay constants, while nonlocal form factors are taken from a fit to lattice QCD results for effective quark propagators. Numerical results show a good agreement with the observed meson phenomenology.