Further study of $f_0(1710)$ with coupled-channel approach and hadron molecular picture

TL;DR

This paper investigates the nature of the $f_0(1710)$ meson by extending coupled-channel models to include pseudoscalar meson channels, confirming its molecular state characteristics and decay patterns align with experimental data.

Contribution

The study advances the understanding of $f_0(1710)$ by incorporating pseudoscalar channels into coupled-channel analysis, showing its properties are consistent with a hadron molecular picture.

Findings

The pole position of $f_0(1710)$ remains stable with added channels.

Calculated decay ratios match experimental data.

Supports the molecular interpretation of $f_0(1710)$.

Abstract

The $f_0(1710)$ was previously proposed to be dynamically generated state by interactions between vector mesons. We extend the study of $f_0(1710)$ by including its coupling to channels of pseudoscalar mesons within coupled-channel approach. The channels involved are $K^*\bar{K}^*,\rho\rho,\omega\omega,\phi\phi, \omega\phi,\pi\pi,K\bar{K},\eta\eta$. We show that the pole assigned to $f_0(1710)$ does not change much. Then we calculate the partial decay widths of $f_0(1710) \to K^*\bar{K}^* \to \pi\pi,K\bar{K},\eta\eta$ as the coupled channel dynamically generated state as well as assuming it to be pure $K^*\bar{K}^*$ molecule. In both cases the ratios of partial decay widths agree fairly with that in PDG.