Sigma(600) and f0(980) from pi pi and gamma gamma scatterings

por Xuangong Wang (Peking University)

miércoles 6 oct. 2010 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

We use an improved K-matrix model to extract hadronic and di-photon couplings of sigma(600) and f0(980). Especially, we are interest in "direct width" to gamma gamma, which will provide important information about their nature. We also find that the rescattering part of the amplitude is relatively large indicating an important contribution of the meson loops in the determination of the \gamma\gamma total width.