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arXiv · 1805.10826

Role of newly discovered $\Xi_b(6227)^-$ for constructing excited bottom baryon family

Bing Chen·Ke-Wei Wei·Xiang Liu·Ailin Zhang
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Abstract

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 $\Xi_b^{\prime}$ 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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Bing Chen, Ke-Wei Wei, Xiang Liu, Ailin Zhang. 2018-05-28. Role of newly discovered $\Xi_b(6227)^-$ for constructing excited bottom baryon family. https://doi.org/10.1103/physrevd.98.031502

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