The $\Omega (2380)$ as a partner of the $\Omega (2012)$

Abstract

We present a study of the $\Omega (2380)$ resonance and show that it is consistent with a dynamically generated state arising from the ${\bar{K}}^{\ast }{\Xi }^{\ast }$, $\omega \Omega$, and $\varphi \Omega$ interactions. In this picture, the $\Omega (2380)$ is analogous to the $\Omega (2012)$, which is generated from the $\bar{K}{\Xi }^{\ast }$ and $\eta \Omega$ channels. The resulting mass, total width, and partial decay widths into the $\bar{K}{\Xi }^{\ast }$ and ${\bar{K}}^{\ast }\Xi$ channels are compatible with the available experimental data. We also discuss possible experimental observables that could provide further insight into the nature of this state.

Comments: 31 pages, 8 figures