Mass spectra of low-lying mesons with JP=0-,1-,0+ and a role of four-quark interactions induced by instantons

In the framework the gluon short-range hypothesis the low-energy amplitudes for the three-flavor constituent quarks (q=u, d, s) are considered the effect of interactions induced by instantons and by and effective gluon exchange are studied. the meson masses for three 36-plets (JP=0-,1-,0+), masses of virtual diquark levels (JP=0+,1+), and the constituent gluon mass are calculated. The results indicate the dominance of the quark-quark forces induced by the effective gluon exchange