Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry
文献类型：期刊论文
| 作者 | Sakai, Shuntaro; Jing, Hao-Jie; Guo, Feng-Kun
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2019 |
| 卷号 | 100期号:7页码:74007 |
| 关键词 | HIDDEN-CHARM PENTAQUARK CHIRAL DYNAMICS MESONS STATES |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.100.074007 |
| 英文摘要 | We investigate the consequences of heavy quark spin symmetry (HQSS) on hidden-charm pentaquark P-c states. As has been proposed before, assuming the P-c(4440) and the P-c(4457) as S-wave (D) over bar*Sigma(c) molecules, seven hadronic molecular states composed of (D) over bar Sigma(c), (D) over bar Sigma(*)(c), (D) over bar*Sigma(c), and (D) over bar*Sigma(*)(c) can be obtained, with the (D) over bar Sigma(c) molecule corresponding to the P-c(4312). These seven states can decay into J/psi N and eta N-c, and we use HQSS to predict ratios of partial widths of the S-wave decays. For the decays into J/psi N, it is found that among all six P-c molecules with spin 1/2 or 3/2, at least four states decay much more easily into the J/psi N than the P-c(4312), and two of them couple dominantly to the (D) over bar*Sigma(c). While no significant peak around the (D) over bar*Sigma(*)(c) threshold is found in the J/psi p distribution, these higher P-c states either are produced with lower rates or some special production mechanism for the observed P-c states might play an important role, such as an intricate interplay between the production of pentaquarks and triangle singularities. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27202]  |
| 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.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 2.[Jing, Hao-Jie 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China 4.Jing, Hao-Jie 5.[Sakai, Shuntaro |
| 推荐引用方式 GB/T 7714 | Sakai, Shuntaro,Jing, Hao-Jie,Guo, Feng-Kun. Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry[J]. PHYSICAL REVIEW D,2019,100(7):74007. |
| APA | Sakai, Shuntaro,Jing, Hao-Jie,&Guo, Feng-Kun.(2019).Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry.PHYSICAL REVIEW D,100(7),74007. |
| MLA | Sakai, Shuntaro,et al."Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry".PHYSICAL REVIEW D 100.7(2019):74007. |
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来源：理论物理研究所
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