Spectrum of Hidden-Charm, Open-Strange Exotics in the Dynamical Diquark Model

Abstract

The observation by BESIII and LHCb of states with hidden charm and open strangeness ($c\bar{c}q\bar{s}$) presents new opportunities for the development of a global model of heavy-quark exotics. Here we extend the dynamical diquark model to encompass such states, using the same values of Hamiltonian parameters previously obtained from the nonstrange and hidden-strange sectors. The large mass splitting between $Z_{cs}(4000)$ and $Z_{cs}(4220)$ suggests substantial SU(3)${}_{\mathrm{flavor}}$ mixing between all $J^P=1^{+}$ states, while their average mass compared to that of other sectors offers a direct probe of flavor octet-singlet mixing among exotics. We also explore the inclusion of $\eta$-like exchanges within the states, and find their effects to be quite limited. In addition, using the same diquark-mass parameters, we find $P_c(4312)$ and $P_{cs}(4459)$ to fit well as corresponding nonstrange and open-strange pentaquarks.

arXiv comment12 pages. Version accepted for publication at Phys. Rev. D. Includes reference update

References in corpus (58)

• Hadronic molecules
• The hidden-charm pentaquark and tetraquark states
• Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays
• The $XYZ$ states: experimental and theoretical status and perspectives
• Multiquark Resonances
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Pentaquark and Tetraquark states
• Heavy-Quark QCD Exotica
• 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
• Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States-
• New Exotic Meson and Baryon Resonances from Doubly-Heavy Hadronic Molecules
• Fine Structure of the QCD String Spectrum
• Evidence of a $J/\psi \Lambda$ structure and observation of excited ${\Xi }^{-}$ states in the ${\Xi }_b^{-}\to J/\psi \Lambda K^{-}$ decay
• Multiquark States
• The Pentaquark Candidates in the Dynamical Diquark Picture
• The possible hidden-charm molecular baryons composed of anti-charmed meson and charmed baryon
• Observation of $J/\psi \varphi$ structures consistent with exotic states from amplitude analysis of $B^{+}\to J/\psi \varphi K^{+}$ decays
• Amplitude analysis of the $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decay
• Sigma_c Dbar and Lambda_c Dbar states in a chiral quark model
• Observation of a near-threshold structure in the $K^{+}$ recoil-mass spectra in $e^{+}{e}^{-}\to K^{+}(D_s^{-}{D}^{\ast 0}+D_s^{\ast -}{D}^0)$
• Model-independent study of structure in $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decays
• A New Picture for the Formation and Decay of the Exotic $XYZ$ Mesons
• Excited heavy tetraquarks with hidden charm
• The XYZ states revisited
• The Simple Spectrum of $c\bar{c}c\bar{c}$ States in the Dynamical Diquark Model
• ${\chi }_{c0}^{}(3915)$ As the Lightest $c\bar{c}s\bar{s}$ State
• Charmonium-like resonances with $J^{PC}=0^{++},2^{++}$ in coupled $D\bar{D}$, $D_s{\bar{D}}_s$ scattering on the lattice
• Predictions of charged charmonium-like structures with hidden-charm and open-strange channels
• Strange molecular partners of the $Z_c(3900)$ and $Z_c(4020)$
• Precision computation of hybrid static potentials in SU(3) lattice gauge theory
• Hidden-charm and bottom tetra- and pentaquarks with strangeness in the hadro-quarkonium and compact tetraquark models
• $Z_{cs}(3985{)}^{-}$ as the $U$-spin partner of $Z_c(3900{)}^{-}$ and implication of other states in the ${\text{SU(3)}}_F$ symmetry and heavy quark symmetry
• $D_s{D}^{\ast }$ molecule as an axial meson
• About the exotic structure of $Z_{cs}$
• The Dynamical Diquark Model: First Numerical Results
• Hidden charm tetraquark states in a diquark model
• Analysis of the hidden-charm tetraquark molecule mass spectrum with the QCD sum rules
• Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model
• Analysis of the $Z_{cs}(3985)$ as the axialvector tetraquark state
• Z_c -like spectra from QCD Laplace sum rules at NLO
• $Z_{cs}(3985{)}^{-}$: a strange hidden-charm tetraquark resonance or not?
• Decoding the nature of $Z_{cs}(3985)$ and establishing the spectrum of charged heavy quarkoniumlike states in chiral effective field theory
• The strange partner of the $Z_c$ structures in a coupled-channels model
• The $Z_{cs}(3985)$ as a threshold effect from the ${\bar{D}}_s^{\ast }D+{\bar{D}}_s{D}^{\ast }$ interaction
• Toward charged $Z_{cs}(3985)$ structure under a reflection mechanism
• Predicition for the decay width of a charged state near the $D_s{\bar{D}}^{\ast }/D_s^{\ast }\bar{D}$ threshold
• Spectroscopy of Exotic Hadrons Formed from Dynamical Diquarks
• Predicting the ${\bar{D}}_s^{(\ast )}{D}_s^{(\ast )}$ bound states as the partners of $X(3872)$
• Strange hadrocharmonium
• A unified description of the hidden-charm tetraquark states $Z_{cs}(3985)$, $Z_c(3900)$ and $X(4020)$
• The Spectrum of $P$-Wave Hidden-Charm Exotic Mesons in the Diquark Model
• The Dynamical Diquark Model: Fine Structure and Isospin
• Photoproduction of strange hidden-charm and hidden-bottom states
• The newly observed $Z_{cs}(3985{)}^{-}$ state: in vacuum and a dense medium
• Study on $Z_{cs}$ and excited $B_s^0$ states in the chiral quark model
• Radiative Transitions of Charmoniumlike Exotics in the Dynamical Diquark Model

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• An updated review of the new hadron states
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Magnetic moments of the hidden-charm strange pentaquark states
• Fine Structure of Pentaquark Multiplets in the Dynamical Diquark Model
• Hidden-charm tetraquarks with strangeness in the chiral quark model
• Is $Z_{cs}(3982)$ a molecular partner of $Z_c(3900)$ and $Z_c(4020)$ states?
• Configuration mixing in strange tetraquarks $Z_{cs}$
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• $Z_{cs}$ states from the $D_s^{\ast }{\bar{D}}^{\ast }$ and $J/\psi K^{\ast }$ coupled channels: Signal in $B^{+}\to J/\psi \varphi K^{+}$ decay
• Production of $Z_{cs}$ in $B$ and $B_s$ decay
• Double Exotic States Productions in Pion and Kaon Induced Reactions
• $Z_{cs}(3985)$ in next-to-leading-order chiral effective field theory -- the first truncation uncertainty analysis
• $X$ and $Z_{cs}$ in $B^{+}\to J/\psi \varphi K^{+}$ as $s$-wave threshold cusps and alternative spin-parity assignments to $X(4274)$ and $X(4500)$
• Investigating the Isospin Property of $T_{cc}^{+}$ from its Dalitz Plot Distribution
• Search for hidden-charm tetraquark with strangeness in $e^{+}{e}^{-}\to K^{+}{D}_s^{\ast -}{D}^{\ast 0}+c.c.$
• The $Z_{cs}$ states and the mixture of hadronic molecule and diquark-anti-diquark components within effective field theory
• Hunting for the heavy quark spin symmetry partner of $Z_{cs}$