Vector and axial vector mesons in a nonlocal chiral quark model
  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. 
M.F. Izzo Villafa\~ne, D. Gomez Dumm, N.N. Scoccola
hep-ph