Low-mass scalar production in $\gamma \gamma$ scattering

Abstract

We estimate the I=0 scalar meson $\sigma /f_0(600)$ $\gamma \gamma$ widths, from $\pi \pi$ and $\gamma \gamma$ scattering data below 700 MeV using an improved analytic K-matrix model.

Comments: 3 pages, 2 figures, Talk given at QCD 08 (Montpellier 7-12th july 2008)