Fine Structure of Pentaquark Multiplets in the Dynamical Diquark Model

Abstract

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.

10 pages, no figures, Includes updated references. To appear in Physical Review D

References in corpus (17)

• Multiquark Resonances
• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Exotics: Heavy Pentaquarks and Tetraquarks
• Prediction of narrow $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances with hidden charm above 4 GeV
• A survey of heavy-heavy hadronic molecules
• Observation of a near-threshold structure in the $K^{+}$ recoil-mass spectra in $e^{+}{e}^{-}\to K^{+}(D_s^{-}{D}^{\ast 0}+D_s^{\ast -}{D}^0)$
• A New Picture for the Formation and Decay of the Exotic $XYZ$ Mesons
• Analysis of the $P_{cs}(4459)$ as the hidden-charm pentaquark state with QCD sum rules
• The Dynamical Diquark Model: First Numerical Results
• Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model
• Hidden charm tetraquark states in a diquark model
• Spectroscopy of Exotic Hadrons Formed from Dynamical Diquarks
• Hidden charm pentaquark states in a diquark model
• The Spectrum of $P$-Wave Hidden-Charm Exotic Mesons in the Diquark Model
• Insights into the nature of the $P_{cs}(4459)$
• Spectrum of Hidden-Charm, Open-Strange Exotics in the Dynamical Diquark Model

Cited by in corpus (12)

• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Surveying the mass spectra and the electromagnetic properties of the ${\Xi }_c^{(\prime ,\ast )}{D}^{(\ast )}$ molecular pentaquarks
• Investigation of hidden-charm double strange pentaquark candidate $P_{css}$ via its mass and strong decays
• Higher molecular $P_{\psi s}^{\Lambda /\Sigma }$ pentaquarks arising from the ${\Xi }_c^{(\prime ,\ast )}{\bar{D}}_1/{\Xi }_c^{(\prime ,\ast )}{\bar{D}}_2^{\ast }$ interactions
• Hidden-charm pentaquark states in a mass splitting model
• Evidence supporting the existence of $P_c(4380{)}^{\pm }$ from the recent measurements of $B_s\to J/\psi p\bar{p}$
• Exotic Hadrons from Scattering in the Diabatic Dynamical Diquark Model
• Investigation of a candidate spin-$\frac{1}{2}$ hidden-charm triple strange pentaquark state $P_{csss}$
• Unravelling Pentaquarks with Born--Oppenheimer effective theory
• Doubly charmed hexaquarks in the diquark picture
• The Production of Singly Charmed Pentaquark $\bar{c}qqqq$ from Bottom Baryon
• DeepQuark: A Deep-Neural-Network Approach to Multiquark Bound States