In this work, the strong decay behaviors of the λ−mode low-lying Ξb and Ξb′ baryons are investigated within the 3P0 model. Our results suggest that all of the low-lying 3ˉF states Ξb(2S), Ξb(1P), and Ξb(1D) have small decay widths of less than 20 MeV, and these states have good potentials to be observed in the Ξb′π and Ξb′∗π invariant masses. Further, most of the 6F multiplets are relatively narrow and may decay into the Ξbπ, Ξb′π, Ξb′∗π, and ΛbKˉ final states. Considering the masses and strong decay behaviors, we can assign the newly observed Ξb(6100) resonance as the Ξb(1P) state with JP=3/2− and interpret the Ξb(6227) structure as the JP=3/2−Ξb′(1P) state with a proper mixing angle. We expect that our predictions for these excited bottom strange baryons will provide helpful information for future experimental research.
@article{arxiv.2102.07391,
title = {Strong decays of the low-lying bottom strange baryons},
author = {Hui-Zhen He and Wei Liang and Qi-Fang Lü and Yu-Bing Dong},
journal= {arXiv preprint arXiv:2102.07391},
year = {2021}
}
Comments
7 pages, 3 figures. Minor modifications, accepted version