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We have analyzed the reaction $\chi_{c0}\to \bar{p} K^+\Lambda$ reported bythe BESIII Collaboration, taking into account the contributions from theintermediate $K(1830)$, $N(2300)$, and $\Lambda(1520)$ resonances. Our resultsare in good agreement with the BESIII measurements, and it is found that theanomalous enhancement near the $\bar{p}\Lambda$ threshold is mainly due to thecontribution of the $K(1830)$ resonance. We also show that the interference ofthe high-mass $N^*$ and $\Lambda^*$ can not produce the anomalous enhancementnear the $\bar{p}\Lambda$ threshold.

Enhancement near the $\bar{p}\Lambda$ threshold in the $\chi_{c0}\to \bar{p}K^+\Lambda$ reaction