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

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

1998-10-17

arxiv.org/abs/hep-ph/9810395v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk presented at the Conference on Mesons and Light Nuclei '98. Prouhonic, Prague, Czechoslovakia, August 31-Septembe

Scientific paper

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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