Landscape of heavy baryons from the perspective of the chiral quark-soliton model

TL;DR

This paper uses the chiral quark-soliton model combined with heavy quark symmetry to classify and predict the spectra and decay patterns of charm and beauty baryons, including recently observed states.

Contribution

It provides a novel classification scheme for heavy baryons based on SU(3) representations and offers predictions for unmeasured sextet masses and decay behaviors.

Findings

Interpretation of $\\Xi_b$ states as negative parity excited anti-triplets or sextets

Assignment of $\\Sigma_b$ states as negative parity sextets

Predictions for masses of unmeasured sextet baryons

Abstract

We employ the chiral quark-soliton model and the heavy quark symmetry to describe spectra of charm and beauty baryons. Heavy baryons can be classified according to the SU(3) representations of the light sector. We argue that recently discovered $\Xi_b$ states can be interpreted as negative parity excited anti-triplets or sextets, and the $\Sigma_b$ states as negative parity sextets. Consequences of such assignments for the decay patterns are discussed and also predictions of masses of the yet unmeasured sextet members are given.