Two photon decays of scalar mesons in a covariant quark model

Two photon decay widths of the J(P) = O+ scalar mesons a(0)(980), f(0)(g80), f(0)(1370) and chi(c0) are calculated in a covariant model which is characterized by the quark-antiquark structure. Previously such models were used to calculate current form factors. Here a different application is tried. A simple version of the model uses adjusted nonrelativistic model parameters with small quark masses. The results seem to prefer nonideal mixing of f(0)(980) and f(0)(1370). The calculated decay rate of chi(c0) agrees with the experimental results.