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.

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

References in corpus (7)

• The pion-pion scattering amplitude. III: Improving the analysis with forward dispersion relations and Roy equations
• Experimental status of the $\pi \pi$ isoscalar S wave at low energy: $f_0(600)$ pole and scattering length
• Amplitude Analysis of High Statistics Results on $\gamma \gamma \to {\pi }^{+}{\pi }^{-}$ and the Two Photon Width of Isoscalar States
• Glueball nature of the sigma/f_0(600) from pi-pi and gamma-gamma scatterings
• Improved dispersion relations for γγ\to π^0π^0
• Lightest scalar and tensor resonances in $\gamma \gamma \to \pi \pi$ after the Belle experiment
• On the two-photon decay width of the sigma meson