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Fine Structure of Pentaquark Multiplets in the Dynamical Diquark Model
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Fine Structure of Pentaquark Multiplets in the Dynamical Diquark Model
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We apply the dynamical diquark model to predict the spectrum of hidden-charm pentaquark states in both unflavored and open-strange sectors. Using only Hamiltonian parameters introduced in the tetraquark $S$- and $P$-wave multiplets, the model naturally produces the level spacing supported by the most recent LHCb results for $P_c$ structures. Furthermore, using model inputs obtained from data of hidden-charm, open-strange tetraquarks ($Z_{cs}$), we predict the spectrum of $P_{cs}$ states, including the recently observed $P_{cs}(4459)$. We find all pentaquark candidates observed to date to belong to the $1P$ multiplet and hence have positive parity.
Forward citations
Cited by 2 Pith papers
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Study of the molecular Properties of the $P_c$ and $P_{cs}$ States
Coupled-channel calculations show Pc and Pcs states as molecular bound states with RMS radii 0.5-2 fm when heavy-quark spin symmetry is respected across all channels.
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$P_{c\bar cs}(4459)^{0}$, $P_{c\bar c s}(4338)^0$ and mass spectrum of strange hidden-charm pentaquarks
Strange hidden-charm pentaquarks modeled as diquark-triquark bound states yield masses between 4200-4590 MeV for S-waves, with P_c cs(4459) assigned as a 3/2- state and P_c cs(4338) as a 1/2- state, plus a predicted l...
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