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

J. R. Peláez | Zendy

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

Author(s) -

J. R. Peláez

Publication year - 1998

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/9940

Subject(s) - physics , chiral perturbation theory , unitarity , meson , pion , isoscalar , particle physics , unitary state , scattering , rho meson , nuclear matter , scattering amplitude , nuclear physics , quantum electrodynamics , nucleon , quantum mechanics , political science , law

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 {radical}s = 1.2 GeV, hence improving considerably the convergence radius of conventional chiral perturbation theory, {chi}PT. The method is applied to obtain the meson-meson phase shifts and inelasticities as well as the isoscalar {pi}{pi} scattering amplitude inside a nuclear medium.

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