Speaker
Description
Within the framework of the Hypercentral Constituent Quark Model (HCQM), we investigate the spin-dependent mass spectra of all-heavy pentaquark configurations, treating them as effective three-body systems composed of two correlated diquarks and an antiquark. The dynamics of the system are described using Jacobi coordinates, which reduce the five-body problem to a hypercentral three-body formalism. The interquark interaction is modeled through the Cornell potential, while the spin-dependent contributions arising from spin-spin, spin-orbit, and tensor interactions are incorporated to obtain the mass splittings of states with different total angular momentum and parity.
The predicted spectra are constructed with proper color couplings, ensuring that the overall pentaquark wave function forms a color-singlet state. The resulting level ordering reflects the effects of hyperfine interactions and provides a systematic classification of states with various $J^P$ assignments. In addition, possible strong decay channels are explored by comparing the calculated masses with the corresponding two-body baryon-meson thresholds. Several predicted states are found to lie close to or below these thresholds, indicating possible stability, weak binding, or compact near-threshold structures. These predictions provide useful theoretical guidance for future experimental searches for all-heavy pentaquark states.