Vector and axial vector mesons in a nonlocal chiral quark model

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.

Comments: 27 pages, 6 figures. Discussion section improved, new process considered, figures and references added. To be published in Physical Review D