Coulomb-scattering and eta - eta-prime mixing angle
Abstract
Description
The fascinating physics underlying eta and eta-prime mesons can be studied theoretically and experimentally in various contexts. In this presentation we want to turn our attention to two important uncorrelated aspects of this vivid research field which provide yet unexpected challenges or surprises. First we discuss open questions in the theoretical treatment of Coulomb-interaction in the context of reaction processes like p p --> p p eta. Then we review eta - eta-prime and sigma(600) - f_0(980) mixing in the U(3) x U(3) Linear Sigma Model and extract information on eta - eta-prime mixing and the K*0(800) resonance from meson-meson scattering.
8 pages, 3 figures; contribution to the Eta05 workshop on "Production and Decay of eta and eta-prime Mesons" (15-18.9.2005, Cracow, Poland); abstract and (mainly) first section revised, several new references added
8 pages, 3 figures; contribution to the Eta05 workshop on "Production and Decay of eta and eta-prime Mesons" (15-18.9.2005, Cracow, Poland); abstract and (mainly) first section revised, several new references added