Role of newly discovered Ξb(6227)- for constructing excited bottom baryon family

被引：51
作者：
Chen, Bing [1 ,2 ,3 ]
Wei, Ke-Wei [1 ]
Liu, Xiang [2 ,3 ,4 ]
Zhang, Ailin [5 ]
机构：
[1] Anyang Normal Univ, Dept Phys, Anyang 455000, Peoples R China
[2] Lanzhou Univ, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Gansu, Peoples R China
[3] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
[4] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
[5] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
来源：
PHYSICAL REVIEW D | 2018年 / 98卷 / 03期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1103/PhysRevD.98.031502
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Selecting the newly observed Xi(b)(6227)(-) by LHCb as a study example, we decode its inner structure by giving the mass spectrum analysis and the investigation of its two-body strong decay behaviors. Our result indicates that the Xi(b)(6227)(-) is a good candidate of the P-wave Xi'(b) state with J(P) = 3/2(-) or 5/2(-). In addition, we further provide the information of the properties of the partners of the Xi(b)(6227)(-). These predicted states include three 2S states and the remaining 1P states in the bottom-strange baryon family. The calculated sizable Okubo-Zweig-Iizuka-allowed decay widths of these partners show that the experimental search for them becomes possible via LHCb. We have a reason to believe that the present study can be treated as a start point for constructing the highly excited bottom baryon spectroscopy.
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页数：6
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