Pion-induced production of hidden-charm pentaquarks P-c(4312), P-c(4440), and P-c(4457)
文献类型：期刊论文
| 作者 | Wang, Xiao-Yun1; He, Jun2,3 ; Chen, Xu-Rong4; Wang, Quanjin5; Zhu, Xinmei6
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| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2019-10-10 |
| 卷号 | 797页码:6 |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2019.134862 |
| 通讯作者 | He, Jun(junhe@njnu.edu.cn) |
| 英文摘要 | The production of the hidden-charm pentaquarks via a pion-induced reaction on a proton target is investigated within an effective Lagrangian approach. Three experimentally observed states, P-c(4312), P-c(4440), and P-c(4457), are considered in calculation, and the Reggeized t-channel meson exchange is considered as main background for the reaction pi(-)p -> J/psi n. The numerical results show that the experimental data of the total cross section at W similar or equal to 5 GeV can be well explained by the contribution from the Reggeized t channel with reasonable cutoff. If the branching ratios Br[P-c -> J/psi N] similar or equal to 3% and Br[P-c -> pi N] similar or equal to 0.05% are taken, the average value of the cross section from the P-c(4312) is about 1.2 nb/100 MeV, which is consistent with existing rude data at near-threshold energies. The results indicate that the branching ratios of the P-c state decays into J/psi N and pi N should be small. The differential cross section shows a sharp increase at extreme forward angles due to the Reggeized t-channel contribution while the contributions from the P-c states are relatively flat. High-precision experimental measurement on the reaction pi(-)p -> J/psi n at near-threshold energies is suggested to confirm the LHCb hidden-charm pentaquarks as genuine states, and such measurement is also helpful to understand the origins of these resonance structures. (C) 2019 The Authors. Published by Elsevier B.V. |
| WOS关键词 | SEARCH |
| 资助项目 | National Natural Science Foundation of China[11705076] ; National Natural Science Foundation of China[11675228] ; Natural Science Foundation of Gansu Provinceunder[17JR5RA113] ; HongLiu Support Funds for Excellent Youth Talents of Lanzhou University of Technology |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000488071200054 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Gansu Provinceunder ; HongLiu Support Funds for Excellent Youth Talents of Lanzhou University of Technology |
| 源URL | [http://119.78.100.186/handle/113462/141789]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | He, Jun |
| 作者单位 | 1.Lanzhou Univ Technol, Dept Phys, Lanzhou 730050, Gansu, Peoples R China 2.Nanjing Normal Univ, Dept Phys, Nanjing 210097, Jiangsu, Peoples R China 3.Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210097, Jiangsu, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 5.Lanzhou Univ Technol, Lanzhou 730050, Gansu, Peoples R China 6.Yangzhou Univ, Dept Phys, Yangzhou 225009, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiao-Yun,He, Jun,Chen, Xu-Rong,et al. Pion-induced production of hidden-charm pentaquarks P-c(4312), P-c(4440), and P-c(4457)[J]. PHYSICS LETTERS B,2019,797:6. |
| APA | Wang, Xiao-Yun,He, Jun,Chen, Xu-Rong,Wang, Quanjin,&Zhu, Xinmei.(2019).Pion-induced production of hidden-charm pentaquarks P-c(4312), P-c(4440), and P-c(4457).PHYSICS LETTERS B,797,6. |
| MLA | Wang, Xiao-Yun,et al."Pion-induced production of hidden-charm pentaquarks P-c(4312), P-c(4440), and P-c(4457)".PHYSICS LETTERS B 797(2019):6. |
入库方式： OAI收割
来源：近代物理研究所
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