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arXiv · hep-ph/9904339

Two photon decays of scalar mesons in a covariant quark model

S. Fajfer·D. Horvatic·D. Tadic·S. Zganec
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Abstract

Two photon decay widths of the $J^P = O^+$ scalar mesons $a_{0} (980)$, $f_{0}(980)$, $f_{0}(1370)$ and $χ_{c0}$ 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 $χ_{c0}$ agrees with the experimental results.

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S. Fajfer, D. Horvatic, D. Tadic, S. Zganec. 1999-04-15. Two photon decays of scalar mesons in a covariant quark model. https://doi.org/10.1142/s0217751x00000045

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