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arXiv · hep-ph/9406326

Low Energy Parameters of the KK and Pipi Scalar-Isoscalar Interactions

R. Kaminski·L. Lesniak
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Abstract

Threshold expansions of the $ππ$ and $K\overline{K}$ spin 0 and isospin 0 scattering amplitudes are performed. Scattering lengths, effective ranges and so--called volume parameters are evaluated. Good agreement with the existing experimental data for the $ππ$ scalar--isoscalar amplitude is found. An importance of future accurate measurements of the $K\overline{K}$ threshold parameters is stressed. New data are needed to understand the basic features of the scalar mesons.

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R. Kaminski, L. Lesniak. 1994-06-15. Low Energy Parameters of the KK and Pipi Scalar-Isoscalar Interactions. https://doi.org/10.1103/physrevc.51.2264

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