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

TL;DR

This paper estimates the two-photon decay widths of the scalar meson sigma/f0(600) using an improved analytic K-matrix model applied to scattering data below 700 MeV.

Contribution

It introduces an improved analytic K-matrix model to analyze gamma-gamma scattering data for scalar meson width estimation.

Findings

Estimated gamma-gamma widths of sigma/f0(600) meson.

Provided insights into scalar meson structure.

Enhanced analysis method for low-energy scattering data.

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.