Radiative decay of Ξb(6227) in a hadronic molecule picture

被引:9
作者
Zhu, HongQiang [1 ]
Huang, Yin [2 ]
机构
[1] Chongqing Normal Univ, Coll Phys & Elect Engn, Chongqing 401331, Peoples R China
[2] Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Peoples R China
基金
美国国家科学基金会;
关键词
effective Lagrangian approach; molecular state; decay widths;
D O I
10.1088/1674-1137/44/8/083101
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The baryon Xi(b)(6227) with the quantum number J(P) = 1/2(-) is considered as a molecular state composed of a Sigma(b) baryon and (K) over bar meson. The partial decay widths of the Sigma(b)(K) over bar molecular state into Xi(b)gamma and Xi'(b)gamma final states through hadronic loops are evaluated with the help of the effective Lagrangians. The partial widths for the Xi(b)(6227) -> gamma Xi(b) and Xi(b)(6227) -> gamma Xi'(b) transitions are evaluated at 1.50-1.02 keV and 17.56-24.91 keV, respectively, which may be accessible for the LHCb. Based on our results, we argue that an experimental determination of the radiative decay width of Xi(b)(6227) is important for the understanding of its intrinsic properties.
引用
收藏
页数:7
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