On January 5, 2013, the CDF Collaboration reported the “Evidence for the bottom baryon resonance state Λb*0 with the CDF II detector”, arXiv:hep-ex 1301.0949. According to CDF its mass is about 5.92 GeV/c2.
This level of Λb0 had been predicted in the paper Calculation of almost all energy levels of baryons, listed on the publication list. Its predicted mass is 5.93 GeV/c2, just 0.17% off. Please, take a look at this paper with its erratum (click here for the erratum). You can also get the paper from Academia through this link.
As it said in the paper, the formula does not apply to hadronic molecules. Thus it does not apply to the recently found levels by LHCb Xi_b’– and Xi_b*– . Please, find their paper through this link. The mass of the baryon Xi_b0 is nicely described by the formula.