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The Use of Dispersion Relations in the $ππ$ and $K\bar K$ Coupled-Channel System

Zhiguang Xiao·Hanqing Zheng
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Abstract

Systematic and careful studies are made on the properties of the IJ=00 $ππ$ and $K\bar K$ coupled-channel system, using newly derived dispersion relations between the phase shifts and poles and cuts. The effects of nearby branch point singularities to the determination of the $f_0(980)$ resonance are estimated and and discussed.

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Zhiguang Xiao, Hanqing Zheng. 2001-09-16. The Use of Dispersion Relations in the $ππ$ and $K\bar K$ Coupled-Channel System. https://doi.org/10.1088/0253-6102%2F48%2F4%2F024

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