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arXiv · 1210.0739

f0(980) and a0(980) resonances near \gamma\gamma\to K^+K^- and \gamma\gamma\to K^0\bar K^0 reaction thresholds

N. N. Achasov·G. N. Shestakov
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Abstract

High-statistics data on the reactions $\gamma\gamma\to K^+K^-$ and $\gamma\gamma\to K^0\bar K^0$ are the last missing link in investigations of the light scalar mesons $f_0(980)$ and $a_0(980)$ in photon-photon collisions. It is believed that $f_0(980)$ and $a_0(980)$ resonances exhibit their four-quark structure in these reactions in a vary peculiar way. The work estimates the feasibility of measurements of scalar contributions near $\gamma\gamma\to K^+K^-$ and $\gamma\gamma\to K^0\bar K^0$ reaction thresholds at modern colliders.

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N. N. Achasov, G. N. Shestakov. 2012-10-02. f0(980) and a0(980) resonances near \gamma\gamma\to K^+K^- and \gamma\gamma\to K^0\bar K^0 reaction thresholds. https://arxiv.org/abs/1210.0739

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