Masses and radiative decay widths of S- and P-wave singly, doubly, and triply heavy charm and bottom baryons

• DOI: 10.48550/arxiv.2307.04939
• Publication Date: 2023-01-01
• Authors: Ortiz-Pacheco, Em...; Bijker, Roelof
• Keywords: Nuclear Theory (nucl-th); High Energy Physics - Phenomenology; High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph); Nuclear Theory; FOS: Physical sciences; High Energy Physics - Experiment

We present a study of mass spectra and electromagnetic couplings of S- and P-wave baryons containing one, two or three heavy quarks, either charm (c) or bottom (b), in the framework of a non-relativistic harmonic oscillator quark model. A simultaneous fit to 41 known masses of heavy baryons (40 singly-heavy and 1 doubly-heavy) shows a r.m.s. deviation of 19 MeV. We present equal-spacing mass rules for excited baryons which may help to assign quantum numbers to experimentally observed heavy baryons. Explicit expressions are derived for electromagnetic couplings, both for spin-flavor matrix elements and radial integrals.<br/>26 pages, 7 figures, 27 tables, revised version with note added, accepted for publication in PRD<br/>