Our study focuses on the Λ-type P-wave bottom baryon states with the spin-parity JP=21−, 23−. We introduce an explicit P-wave between the two light quarks in the interpolating currents (and the two light quarks are antisymmetric in flavor space, therefore leads to the name Λ-type baryon) to investigate the Λb and Ξb states within the framework of the full QCD sum rules. The predicted masses show that the Ξb(6087) and Ξb(6095/6100) could to be the P-wave bottom-strange baryon states with the spin-parity JP=21− and 23−, respectively, meanwhile, the Λb(5912) and Λb(5920) could be the P-wave bottom baryon states with the spin-parity JP=21− and 23−, respectively. The Λb(5920) and Ξb(6095/6100) maybe have two remarkable under-structures or Fock components at least.
@article{arxiv.2306.05626,
title = {The $\Lambda$-type P-wave bottom baryon states via the QCD sum rules},
author = {Qi Xin and Zhi-Gang Wang and Fei Lu},
journal= {arXiv preprint arXiv:2306.05626},
year = {2023}
}