English

The $\Lambda$-type P-wave bottom baryon states via the QCD sum rules

High Energy Physics - Phenomenology 2023-08-16 v2

Abstract

Our study focuses on the Λ\Lambda-type P-wave bottom baryon states with the spin-parity JP=12J^P=\frac{1}{2}^-, 32\frac{3}{2}^-. 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\Lambda-type baryon) to investigate the Λb\Lambda_b and Ξb\Xi_b states within the framework of the full QCD sum rules. The predicted masses show that the Ξb(6087)\Xi_b(6087) and Ξb(6095/6100)\Xi_b(6095/6100) could to be the P-wave bottom-strange baryon states with the spin-parity JP=12J^P=\frac{1}{2}^- and 32\frac{3}{2}^-, respectively, meanwhile, the Λb(5912)\Lambda_b(5912) and Λb(5920)\Lambda_b(5920) could be the P-wave bottom baryon states with the spin-parity JP=12J^P=\frac{1}{2}^- and 32\frac{3}{2}^-, respectively. The Λb(5920)\Lambda_b(5920) and Ξb(6095/6100)\Xi_b(6095/6100) maybe have two remarkable under-structures or Fock components at least.

Keywords

Cite

@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}
}

Comments

19 pages, 12 figures, revised version

R2 v1 2026-06-28T11:00:39.389Z