Theoretical interpretation of the $\Xi (1620)$ and $\Xi (1690)$ resonances seen in ${\Xi }_c^{+}\to {\Xi }^{-}{\pi }^{+}{\pi }^{+}$ decay

Hai-Peng Li, Gong-Jie Zhang, Wei-Hong Liang +1

We study the Belle reaction ${\Xi }_c^{+}\to {\Xi }^{-}{\pi }^{+}{\pi }^{+}$ looking at the mass distribution of ${\pi }^{+}\Xi$, where clear signals for the $\Xi (1620)$ and $\Xi (1690)$ resonances are seen. These two…