$\rho \rho$ scattering revisited with coupled-channels of pseudoscalar mesons

Abstract

The $\rho \rho$ scattering has been studied by two groups which both claimed a dynamical generated scalar meson, most likely to be $f_0(1370)$. Here we investigate the influence of coupled-channels of pseudoscalar mesons, i.e., $\pi \pi$ and $\bar{K}K$, on this dynamical generated scalar state. With the coupled channel effect included, the pole and partial decay widths are found to be more close to PDG values for $f_0(1500)$.

Comments: 11 pages with 4 figures