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The f_0(980) and a_0(980) Productions in Two-Photon Collisions and Radiative phi Meson Decays

M. Uehara
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Abstract

We study how the scalar f_0(980) and a_0(980) states are produced in the two-photon collisions and radiative decays of the phi meson through unitarized Born amplitudes with the charged pion and kaon loops followed by S-wave meson-meson scattering amplitudes. We found in a previous paper that f_0(980) is generated as the bound state resonance, but a_0(980) as the cusp, and find herre that the nature of the generation of both states is consistent with the features of the production processes.

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M. Uehara. 2002-06-17. The f_0(980) and a_0(980) Productions in Two-Photon Collisions and Radiative phi Meson Decays. https://arxiv.org/abs/hep-ph/0206141

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