The possible members of the $5^1{S}_0$ meson nonet

Abstract

The strong decays of the $5^1{S}_0$ $q\bar{q}$ states are evaluated in the ${}^3{P}_0$ model with two types of space wave functions. Comparing the model expectations with the experimental data for the $\pi (2360)$, $\eta (2320)$, $X(2370)$, and $X(2500)$, we suggest that the $\pi (2360)$, $\eta (2320)$, and $X(2500)$ can be assigned as the members of the $5^1{S}_0$ meson nonet, while the $5^1{S}_0$ assignment for the $X(2370)$ is not favored by its width. The $5^1{S}_0$ kaon is predicted to have a mass of about 2418 MeV and a width of about 163 MeV or 225 MeV.

Comments: 10 pages, 5 figures, version accepted by Eur. Phys. J. C