Possibility to study the pentaquark states P-c(4312), P-c(4440), and P-c(4457) in the reaction gamma p -> J/psi p
文献类型：期刊论文
| 作者 | Chen, Xu-Rong3 ; He, Jun1,4; Wang, Xiao-Yun2
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2019-06-11 |
| 卷号 | 99期号:11页码:8 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.99.114007 |
| 通讯作者 | Wang, Xiao-Yun(xywang01@outlook.com) ; Chen, Xu-Rong(xchen@impcas.ac.cn) ; He, Jun(junhe@njnu.edu.cn) |
| 英文摘要 | Inspired by the observation of the pentaquark states P-c(4312), P-c(1440), and P-c(4457) at LHCb, photoproduction of these three P-c states via the interaction gamma p -> J/psi p is investigated in an effective Lagrangian approach. The t-channel Pomeron exchange diffractive process is considered as the main background for the J/psi, photoproduction. The numerical results show that the theoretical cross section, which is calculated by assuming a branching ratio Br[P-c -> J/psi p] similar or equal to 3%, is consistent with the existing experimental data of the gamma p -> J/psi p process. With such a branching ratio, if experimental precision reaches 0.1 nb within a bin of 100 MeV for photon energy, two peaks arc expected to be obviously observed in the J/psi p photoproduction. To observe the two-peak structure from P-c(4440) and P-c(4457), higher precision, about 0.1 nb/10 MeV, is required to distinguish two close pentaquarks. If the physical branching ratio is larger, the requirement of experimental precision will be reduced. The differential cross sections for reaction gamma p -> J/psi p are also present. It is found that the t-channel Pomeron exchange provides a sharp increase at extreme forward angles and gives a sizable contribution at most energy points, while the contributions from the s-channel P-c exchanges play important roles at threshold energies. The experimental measurement of the gamma p -> J/psi p process in the near-threshold energy region around E-gamma similar or equal to 9.4-10.5 GeV is suggested and is accessible at CEBAF@JLab and COMPASS. |
| WOS关键词 | VECTOR-MESONS ; PHOTOPRODUCTION ; ELECTROPRODUCTION ; VMD |
| 资助项目 | National Natural Science Foundation of China[11705076] ; National Natural Science Foundation of China[11675228] ; Natural Science Foundation of Gansu province[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 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000471984900003 |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Gansu province ; HongLiu Support Funds for Excellent Youth Talents of Lanzhou University of Technology |
| 源URL | [http://119.78.100.186/handle/113462/133226]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Chen, Xu-Rong; He, Jun; Wang, Xiao-Yun |
| 作者单位 | 1.Nanjing Normal Univ, Dept Phys, Nanjing 210097, Jiangsu, Peoples R China 2.Lanzhou Univ Technol, Dept Phys, Lanzhou 730050, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 4.Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210097, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Xu-Rong,He, Jun,Wang, Xiao-Yun. Possibility to study the pentaquark states P-c(4312), P-c(4440), and P-c(4457) in the reaction gamma p -> J/psi p[J]. PHYSICAL REVIEW D,2019,99(11):8. |
| APA | Chen, Xu-Rong,He, Jun,&Wang, Xiao-Yun.(2019).Possibility to study the pentaquark states P-c(4312), P-c(4440), and P-c(4457) in the reaction gamma p -> J/psi p.PHYSICAL REVIEW D,99(11),8. |
| MLA | Chen, Xu-Rong,et al."Possibility to study the pentaquark states P-c(4312), P-c(4440), and P-c(4457) in the reaction gamma p -> J/psi p".PHYSICAL REVIEW D 99.11(2019):8. |
入库方式： OAI收割
来源：近代物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。