A mixing coupling scheme for spectra of singly heavy baryons with spin-1 diquarks in P-waves

A new scheme of state classification is proposed and applied to analyze masses of the heavy baryons Omega(Q), Sigma(Q) and Xi(Q)' in P-waves. The results confirm all excited Omega(c) and Omega(b) baryons reported recently by LHCb to be bound states of a P-wave ss-diquark and a respective charm or bottom quark, and thereby predict Regge trajectories for more excited Omega(c) and Omega(b) baryons. We suggest one excited J(P) = 5/2(-) Omega(b) state to be unseen by LHCb around 6352 MeV, and predict P-wave masses of all spin-partners of the odd-parity baryons Sigma(c)(2800)/Xi(c)' (2942) and Sigma(b)(6097)/Xi(b)' (6227). A computation is further given in a relativized potential quark models to explainmatched values of spin couplings of all considered baryons, by which a scaling law for these spin couplings is discussed.

Automated summary

A new scheme of state classification is proposed and applied to analyze heavy baryons in P-waves, confirming excited states and predicting trajectories. The results suggest unseen excited states and provide predictions for masses of various baryons, with spin couplings discussed for all considered baryons.