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Enhancement near the $\bar{p}\Lambda$ threshold in the $\chi_{c0}\to \bar{p}K^+\Lambda$ reaction by Wang, Guan-Ying; Duan, Man-Yu; Wang, En; Li, De-Min is a scholarly article available to read on EtoBox.

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

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

Author

Wang, Guan-Ying; Duan, Man-Yu; Wang, En; Li, De-Min

Published

2020

Language

EN