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arXiv · 0910.0341

Investigations on the Property of $f_0(600)$ and $f_0(980)$ Resonances in $\gamma\gamma\to \pi\pi$ Process

X. G. Wang·O. Zhang·L. C. Jin·H. Q. Zheng·Z. Y. Zhou
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Abstract

Using dispersion relation technique and experimental data, a coupled channel analysis on $\gamma\gamma\to\pi\pi$ process is made. Di-photon coupling of $f_0(600)$ and $f_0(980)$ resonances are extracted and their dynamical properties are discussed. Especially we study the physical meaning of the coupling constant $g^2_{\sigma\pi\pi}$, which maintains a negative real part as determined through dispersive analyses.

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X. G. Wang, O. Zhang, L. C. Jin, H. Q. Zheng, Z. Y. Zhou. 2009-10-02. Investigations on the Property of $f_0(600)$ and $f_0(980)$ Resonances in $\gamma\gamma\to \pi\pi$ Process. https://arxiv.org/abs/0910.0341

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