Strong decays of $P_{cs}\left(4338\right)$ and its high isospin cousin via QCD sum rules

In the present work, the strong decays of the newly observed $P_{cs}\left(4338\right)$ as well as its high isospin cousin $P_{cs}\left(4460\right)$ are studied via the QCD sum rules. According to conservation of isospin, spin, and parity, the hadronic coupling constants in four decay channels are obtained; then, the partial decay widths are obtained. The total width of the $P_{cs}\left(4338\right)$ coincides with the experimental data nicely, while the predictions for the $P_{cs}\left(4460\right)$ can be testified in the future experiment and shed light on the nature of the $P_{cs}\left(4338\right)$.