| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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$P_{c}(4457)$ Interpreted as a $J^{P}=1/2^{+}$ State by $\bar{D}^{0}\varLambda^{+}_{c}(2595)-\pi^0 P_{c}(4312)$ Interaction |
| Jin-Zi Wu1,2, Jin-Yi Pang3*, and Jia-Jun Wu1,4* |
1School of Physics Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
2Columbian College of Arts & Sciences, George Washington University, 801 22nd St. NW Washington DC 20052, USA
3College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
4Southern Center for Nuclear-Science Theory, Institute of Modern Physics, Chinese Academy of Sciences, Huizhou 516000, China
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| Cite this article: |
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Jin-Zi Wu, Jin-Yi Pang, and Jia-Jun Wu 2024 Chin. Phys. Lett. 41 091201 |
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Abstract $P_c(4457)$ has been discovered over five years, but the parity of this particle remains undetermined. We propose a new interpretation for $P_c(4457)$, which is the state generated from the coupled-channel $\bar{D}^0\varLambda_c^{+}(2595)$ and $\pi^0 P_c(4312)$ since they can exchange an almost on-shell $\varSigma_c^+$. In this scenario, the parity of $P_c(4457)$ will be positive, which is different from the candidate of the bound state of $\bar{D}^*\varSigma_c$. The main decay channel of $P_c(4457)$ in this model is $P_c(4312)\pi$. We propose three processes $\varLambda_b^0 \to J/\psi K_s p \pi^-$, $\varLambda_b^0 \to J/\psi K^- p \pi^0$, and $\varLambda_b^0 \to J/\psi p \pi^- \pi^+ K^-$ to verify $P_c(4457)\to P_c(4312)\pi$.
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Received: 11 June 2024
Published: 02 September 2024
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| PACS: |
12.39.-x
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(Phenomenological quark models)
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