Mass spectra of double-bottom baryons

Abstract

Based on the relativistic quark model and the infinitesimally shifted Gaussian basis function method, we investigate the mass spectra of double bottom baryons systematically. In the $\rho$-mode which appears lower in energy than the other excited modes, we obtain the allowed quantum states and perform a systematic study of the mass spectra of the ${\Xi }_{bb}$ and ${\Omega }_{bb}$ families. We analyze the root mean square radii and quark radial probability density distributions to deeply understand the structure of the heavy baryons. Meanwhile, the mass spectra allow us to successfully construct the Regge trajectories in the $(J,M^2)$ plane. We also predict the masses of the ground states of double bottom baryons and discuss the differences between the structures of our spectra and those from other theoretical methods. At last, the shell structure of the double bottom baryon spectra is shown, from which one could get a bird's-eye view of the mass spectra.

16 pages, 9 figures, 5 tables. arXiv admin note: text overlap with arXiv:2207.04167

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Cited by in corpus (5)

• Heavy baryons in the relativized quark model with chromodynamics
• Heavy quark dominance in orbital excitation of singly and doubly heavy baryons
• Heavy-quark dominance and fine structure of excited heavy baryons ${\Sigma }_Q$, ${\Xi }_Q^{\prime }$ and ${\Omega }_Q$
• The ground states of hidden-charm tetraquarks and their radial excitations
• Mass spectra of singly heavy baryons in the relativized quark model with heavy-quark dominance