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Theoretical Aspects of the Pion-Pion Interaction

Irinel Caprini·Gilberto Colangelo·Heinrich Leutwyler
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Abstract

We give a brief review of the theoretical description of low energy pion-pion scattering by the combined use of Chiral Perturbation Theory and Roy equations, an update of the Regge parametrization of $ππ$ cross sections at high energies, and a short discussion of the scalar radius of the pion.

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Irinel Caprini, Gilberto Colangelo, Heinrich Leutwyler. 2005-09-23. Theoretical Aspects of the Pion-Pion Interaction. https://doi.org/10.1142/s0217751x0603240x

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