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Abstract
Abstract Pc(4457) has been discovered over five years, but the parity of this particle remains undetermined. We propose a new interpretation for Pc(4457), which is the state generated from the coupled-channel and π0Pc(4312) since they can exchange an almost on-shell . In this scenario, the parity of Pc(4457) will be positive, which is different from the candidate of the bound state of . The main decay channel of Pc(4457) in this model is Pc(4312)π. We propose three processes , , and to verify Pc(4457) → Pc(4312)π. -
Acknowledgments: The authors would like to thank Li-sheng Geng and Feng-kun Guo for useful discussions. This work was supported by the National Natural Science Foundation of China (Grant Nos. 12175239, 12135011, and 12221005), and the National Key Research and Development Program of China (Grant No. 2020YFA0406400), the Chinese Academy of Sciences (Grant No. YSBR-101), and the Xiaomi Foundation/Xiaomi Young Talents Program.
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References
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