X(1835), X(2120), X(2370) and $\eta (1760)$ in chiral quark model

Shaona Chen, Jialun Ping

By analyzing the meson spectra obtained in the constituent quark model, we find that the pseudoscalar mesons ${\eta }^{\prime }(2^1{S}_0)$, $\eta (4^1{S}_0)$, ${\eta }^{\prime }(3^1{S}_0)$ and ${\eta }^{\prime }(4^1{S}_0)$ are the possib…