Strange hidden-charm tetraquarks in constituent quark models

Abstract

Inspired by the newly reported $Z_{cs}(3985{)}^{-}$ by the BESIII Collaboration, we systematically investigate the strange hidden-charm tetraquark systems $cs\bar{c}\bar{u}$ with two structures: meson-meson and diquark-antidiquark. Two quark models: the chiral quark model (ChQM) and the quark delocalization color screening model (QDCSM) are used here. Similar results are obtained in both two quark models. There is no any bound state in either ChQM or QDCSM, which excludes the molecular state explanation ($D_s{D}^{\ast }/D_s^{\ast }D/D_s^{\ast }{D}^{\ast }$) of the reported $Z_{cs}(3985{)}^{-}$. However, the effective potentials for the diquark-antidiquark $cs\bar{c}\bar{u}$ systems shows the possibility of some resonance states with mass range of $3916.5\sim 3964.6$ MeV for $I{J}^P=\frac{1}{2}{0}^{+}$, $4008.8\sim 4091.2$ MeV for $I{J}^P=\frac{1}{2}{1}^{+}$, $4246.8\sim 4418.1$ MeV for $I{J}^P=\frac{1}{2}{2}^{+}$. So the observed $Z_{cs}(3985{)}^{-}$ state is possible to be explained as a compact resonance state composed of $cs\bar{c}\bar{u}$ with $I{J}^P=\frac{1}{2}{0}^{+}$ or $I{J}^P=\frac{1}{2}{1}^{+}$. The study of the scattering process of corresponding open channels is under way to check this conclusion.

9 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:2006.13745

References in corpus (20)

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• Implications of the $Z_{cs}(3985)$ and $Z_{cs}(4000)$ as two different states
• Photoproduction of strange hidden-charm and hidden-bottom states
• The newly observed $Z_{cs}(3985{)}^{-}$ state: in vacuum and a dense medium
• The nature of charged charmonium-like states $Z_c(3900)$ and its strange partner $Z_{cs}(3982)$
• Explanation of the newly obseaved $Z_{cs}^{-}(3985)$ as a $D_s^{(\ast )-}{D}^{(\ast )0}$ molecular state
• Recoupling Mechanism for exotic mesons and baryons
• Can $Z_{cs}(3985)$ be a molecular state of ${\bar{D}}_s^{\ast }D$ and ${\bar{D}}_s{D}^{\ast }$ ?
• Spectrum of Hidden-Charm, Open-Strange Exotics in the Dynamical Diquark Model

Cited by in corpus (10)

• An updated review of the new hadron states
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Hadronic molecules in B decays
• A combined analysis of the $Z_c(3900)$ and the $Z_{cs}(3985)$ exotic states
• The low-lying hidden- and double-charm tetraquark states in a constituent quark model with Instanton-induced Interaction
• $Z_{cs}(3985)$ in next-to-leading-order chiral effective field theory -- the first truncation uncertainty analysis
• Search for hidden-charm tetraquark with strangeness in $e^{+}{e}^{-}\to K^{+}{D}_s^{\ast -}{D}^{\ast 0}+c.c.$
• Hadronic medium effects on $Z_{cs}(3985{)}^{-}$ production in heavy-ion collisions
• The ground states of hidden-charm tetraquarks and their radial excitations
• Hunting for the heavy quark spin symmetry partner of $Z_{cs}$