engleski

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 (1378) and X-c-0 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 X-c-0 agrees with the experimental results.

covariant quark model; two photon decay widths

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