$P_c(4457)$ interpreted as a $J^P=1/2^+$ state by $\bar{D}^0Λ^+_c(2595)$-$π^0 P_c(4312)$ interaction
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866910736902520832 |
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| author | Wu, Jin-Zi Pang, Jin-Yi Wu, Jia-Jun |
| author_facet | Wu, Jin-Zi Pang, Jin-Yi Wu, Jia-Jun |
| contents | $P_c(4457)$ has been discovered over five years, but the parity of this particle remains undetermined. In this letter we propose a new interpretation for $P_c(4457)$, which is the state generated from the coupled-channel $\bar{D}^0Λ_c^{+}(2595)$ and $π^0 P_c(4312)$ since they can exchange an almost on-shell $Σ_c^+$. In this scenario, the parity of $P_c(4457)$ will be positive, which is different from the candidate of the bound state of $\bar{D}^*Σ_c$. The main decay channel of $P_c(4457)$ in this model is $P_c(4312)π$. We propose three processes $Λ_b^0 \to J/ψK_s p π^-$, $Λ_b^0 \to J/ψK^- p π^0$, and $Λ_b^0 \to J/ψp π^- π^+ K^-$ to verify $P_c(4457)\to P_c(4312)π$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_05743 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | $P_c(4457)$ interpreted as a $J^P=1/2^+$ state by $\bar{D}^0Λ^+_c(2595)$-$π^0 P_c(4312)$ interaction Wu, Jin-Zi Pang, Jin-Yi Wu, Jia-Jun High Energy Physics - Phenomenology $P_c(4457)$ has been discovered over five years, but the parity of this particle remains undetermined. In this letter we propose a new interpretation for $P_c(4457)$, which is the state generated from the coupled-channel $\bar{D}^0Λ_c^{+}(2595)$ and $π^0 P_c(4312)$ since they can exchange an almost on-shell $Σ_c^+$. In this scenario, the parity of $P_c(4457)$ will be positive, which is different from the candidate of the bound state of $\bar{D}^*Σ_c$. The main decay channel of $P_c(4457)$ in this model is $P_c(4312)π$. We propose three processes $Λ_b^0 \to J/ψK_s p π^-$, $Λ_b^0 \to J/ψK^- p π^0$, and $Λ_b^0 \to J/ψp π^- π^+ K^-$ to verify $P_c(4457)\to P_c(4312)π$. |
| title | $P_c(4457)$ interpreted as a $J^P=1/2^+$ state by $\bar{D}^0Λ^+_c(2595)$-$π^0 P_c(4312)$ interaction |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2407.05743 |