On the widths of $\eta (1295)$ and $\eta (1405/1475)$

Yin Cheng, Lin Qiu, Qiang Zhao

Based on the assignment of the first radial excitation states of the isoscalar pseudoscalars for $\eta (1295)$ and $\eta (1405/1475)$, we investigate their three-body and four-body decay c…