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A coupled channel unitary chiral approach to the meson-meson interaction and pion-pion scattering in a nuclear medium

E. Oset·J. A. Oller·J. R. Peláez·Chiang Huan Ching·M. J. Vicente Vacas
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Abstract

A new tool which combines chiral perturbation theory and unitarity in coupled channels is applied with success to the study of the meson-meson interaction, extending the theoretical predictions up to sqrt{s} = 1.2 GeV, hence improving considerably the convergence radius of conventional chiral perturbation theory. The method is applied to obtain the meson-meson phase shifts and inelasticities as well as the isoscalar pion-pion scattering amplitude inside a nuclear medium.

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E. Oset, J. A. Oller, J. R. Peláez, Chiang Huan Ching, M. J. Vicente Vacas. 1998-10-17. A coupled channel unitary chiral approach to the meson-meson interaction and pion-pion scattering in a nuclear medium. https://arxiv.org/abs/hep-ph/9810395

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