The Tensor Forses and the Quarkonia Properties

Abstract

Based on the numeric solution of a system of coupled channels for S- and D -waves a mass spectrum and wave functions of a family of vector mesons cc and ud in triplet states are obtained. The calculations are performed using a well known Cornell potential with a mixed Lorentz-structure of the confinement term. The spin-dependent part of the potential is taken from the Breit-Fermi approach. The effect of singular terms of potential is considered in the framework of the perturbation theory and by a configuration interaction approach (CIA), modified for a system of coupled equations. It is shown that even a small contribution of the D-wave to be very important at the calculation of certain characteristics of the meson states.