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Disentangle the hadronic molecule nature of the $P_c(4380)$ pentaquark-like structure | Chao-Wei Shen
; Feng-Kun Guo
; Ju-Jun Xie
; Bing-Song Zou
; | Date: |
15 Mar 2016 | Abstract: | We demonstrate that the relative ratio of the decays of hidden charm
pentaquark-like structure $P^+_c(4380)$ to $ar{D}^* Lambda_c^+$ and $J/psi
p$ are very different for $P^+_c$ being $ar{D} Sigma_c^*(2520)$ or
$ar{D}^* Sigma_c(2455)$ molecule states. While the partial width of the
$ar{D} Sigma_c^*(2520)$ molecule to the $ar{D}^* Lambda_c^+$ is much
larger, by one order of magnitude, than that to the $J/psi p$, the $ar{D}^*
Sigma_c(2455)$ molecule shows a different pattern. Our analysis shows that the
$ar{D} Sigma_c^*$ bound state ansatz is more reasonable than the $ar{D}^*
Sigma_c$ one to explain the broad $P_c(4380)$ structure. We suggest to search
for the $P_c(4380)$ in the $ar{D}^* Lambda_c^+$ system, which can be used to
disentangle the nature of the $P^+_c(4380)$ structure. | Source: | arXiv, 1603.4672 | Services: | Forum | Review | PDF | Favorites |
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