2015/07/16 by R. N. Faustov, V. O. Galkin · 3 citations
Physics and Astronomy · #Atomic physics #Baryon #Constituent quark #Diquark #High-Energy Particle Collisions Research #Nuclear physics #Omega baryon #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum number #Quark #Quark model #Quark star #Quarkonium #Strange matter #Strange quark #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.92.054005
published as Phys. Rev. D 92, 054005 (2015) · 21 pages, 3 figures
arxiv created 2015/07/16 · openalex publication_date 2015/09/04 · arxiv updated 2016/10/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Mass spectra of strange baryons are calculated in the framework of the relativistic quark model based on the quasipotential approach. Baryons are treated as relativistic quark-diquark bound systems. It is assumed that two quarks with equal constituent masses form a diquark. The diquark excitations and its internal structure are consistently taken into account. Calculations are performed up to rather high orbital and radial excitations of strange baryons. On this basis the Regge trajectories are constructed. The obtained results are compared with available experimental data and previous predictions. It is found that all masses of the 4- and 3-star states of strange baryons with established quantum numbers, as well as most of the 2- and 1-star states, are well reproduced. The developed relativistic quark-diquark model predicts less excited states than three-quark models of strange baryons.