Rethinking the Pc(4457)+ as the PψΔ+ (4457) isoquartet (D)over-bar* Σc molecule
文献类型：期刊论文
| 作者 | Peng, Fang-Zheng; Yan, Mao-Jun; Sanchez Sanchez, Mario2,3; Pavon Valderrama, Manuel |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2023 |
| 卷号 | 846页码:138207 |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2023.138207 |
| 英文摘要 | The nature of the P-c(4312), P-c(4440) and P-c(4457) pentaquarks is a fascinating theoretical question. Within the molecular picture their more usual interpretation is that of I = 1/2 (D) over bar Sigma(c) and 2 (D) over bar*Sigma(c) bound states. Here we argue in favor of interpreting the P-c(4457) pentaquark as a I = 3/2 (D) over bar*Sigma(c) bound state (with spin J = 12 ) instead. Owing to isospin symmetry breaking effects, with this identification the partial decay width of the P-c(4457)(+) into J/psi p will be of the same order of magnitude as the P-c(4312)+ and P-c(4440)+, in contrast with the considerably larger partial decay width in the I = 1/2 scenario. In turn, this leads to a different hidden-charm molecular pentaquark spectrum, in which there are only four or five P-psi(N) bound states instead of the usual seven, which might explain why the predicted J = 12 and 32 (I = 1/2) (D) over bar*Sigma(c)* molecular partners of the P-c(4312) and P-c(4440) have not been observed. (c) 2023 The Authors. Published by Elsevier B.V. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28067]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Bordeaux, LP2IB, CNRS, IN2P3, F-33175 Gradignan, France 4.Univ Murcia, Dept Fis, Murcia 30071, Spain |
| 推荐引用方式 GB/T 7714 | Peng, Fang-Zheng,Yan, Mao-Jun,Sanchez Sanchez, Mario,et al. Rethinking the Pc(4457)+ as the PψΔ+ (4457) isoquartet (D)over-bar* Σc molecule[J]. PHYSICS LETTERS B,2023,846:138207. |
| APA | Peng, Fang-Zheng,Yan, Mao-Jun,Sanchez Sanchez, Mario,&Pavon Valderrama, Manuel.(2023).Rethinking the Pc(4457)+ as the PψΔ+ (4457) isoquartet (D)over-bar* Σc molecule.PHYSICS LETTERS B,846,138207. |
| MLA | Peng, Fang-Zheng,et al."Rethinking the Pc(4457)+ as the PψΔ+ (4457) isoquartet (D)over-bar* Σc molecule".PHYSICS LETTERS B 846(2023):138207. |
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来源：理论物理研究所
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