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arXiv · hep-ph/0309242

The properties of the $σ$ and $κ$ resonances in a new unitarization approach

H. Q. Zheng·Z. Y. Zhou·G. Y. Qin·Z. G. Xiao
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Abstract

A new unitarization approach is discussed and applied to study the elastic $πK$ scattering process. The existence of the light $κ$ resonance is firmly established if the scattering length in the I=1/2 channel does not deviate too much from its value obtained from chiral perturbation theory, and a precise determination to the mass and width of the $κ$ resonance requires a precise determination of the scattering length parameter.

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H. Q. Zheng, Z. Y. Zhou, G. Y. Qin, Z. G. Xiao. 2003-09-21. The properties of the $σ$ and $κ$ resonances in a new unitarization approach. https://doi.org/10.1063/1.1799725

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