$QQ\bar{s}\bar{s}$ tetraquarks in the chiral quark model

Abstract

The low-lying $S$-wave $QQ\bar{s}\bar{s}$ ($Q=c,b$) tetraquark states with $I{J}^P=00^{+}$, $01^{+}$ and $02^{+}$ are systematically investigated in the framework of complex scaling range of chiral quark model. Every structure including meson-meson, diquark-antidiquark and K-type configurations, and all possible color channels in four-body sector are considered by means of a commonly extended variational approach, Gaussian expansion method. Several narrow and wide resonance states are obtained for $cc\bar{s}\bar{s}$ and $bb\bar{s}\bar{s}$ tetraquarks with $I{J}^P=00^{+}$ and $02^{+}$. Meanwhile, narrow resonances for $cb\bar{s}\bar{s}$ tetraquarks are also found in $I{J}^P=00^{+}$, $01^{+}$ and $02^{+}$ states. These results confirm the possibility of finding hadronic molecules with masses $\sim 0.6\text{GeV}$ above the noninteracting hadron-hadron thresholds.

18 pages, 19 tables and 10 figures

References in corpus (32)

• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Constituent quark model study of the meson spectra
• Emergence of a complete heavy-quark spin symmetry multiplet: seven molecular pentaquarks in light of the latest LHCb analysis
• Study of $P_c(4457)$, $P_c(4440)$, and $P_c(4312)$ in a quasipotential Bethe-Salpeter equation approach
• Heavy quark spin symmetric molecular states from ${\bar{D}}^{(\ast )}{\Sigma }_c^{(\ast )}$ and other coupled channels in the light of the recent LHCb pentaquarks
• Anatomy of the newly observed hidden-charm pentaquark states: $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$
• Lattice QCD investigation of a doubly-bottom $\bar{b}\bar{b}ud$ tetraquark with quantum numbers $I(J^P)=0(1^{+})$
• Exotic meson-meson molecules and compact four--quark states
• Doubly-heavy tetraquarks
• Observation of new ${\Xi }_c^0$ baryons decaying to ${\Lambda }_c^{+}{K}^{-}$
• Possibility to study pentaquark states $P_c(4312),P_c(4440)$, and $P_c(4457)$ in $\gamma p\to J/\psi p$ reaction
• Charmonium resonances in the 3.9 GeV/$c^2$ energy region and the $X(3915)/X(3930)$ puzzle
• Dynamical study of $\mathbf{QQ}-\bar{\mathbf{u}}\bar{\mathbf{d}}$ mesons
• Canonical description of the new LHCb resonances
• Heavy pentaquark spectroscopy in the diquark model
• Observation of a new baryon state in the ${\Lambda }_b^0{\pi }^{+}{\pi }^{-}$ mass spectrum
• Charmed-strange Meson Spectrum: Old and New Problems
• Threshold effects in P-wave bottom-strange mesons
• Possible triple-charm molecular pentaquarks from ${\Xi }_{cc}{D}_1/{\Xi }_{cc}{D}_2^{\ast }$ interactions
• Doubly Charmed Pentaquarks
• Production of exotic tetraquarks $QQ\bar{q}\bar{q}$ in heavy-ion collisions at the LHC
• Interpretation of the observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ states as 1$D$ bottom baryons
• Heavy quark spin multiplet structure of $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
• Strong decays of double-charmed pseudoscalar and scalar $cc\overline{u}\overline{d}$ tetraquarks
• Understanding the newly observed ${\Xi }_c^0$ states through their decays
• Possible interpretation of the newly observed ${\Omega }_b$ states
• Looking for the hidden-charm pentaquark resonances in $J/\psi p$ scattering
• Interpretation of excited ${\Omega }_b$ signals
• Excited ${\Omega }_b$ baryons and fine structure of strong interaction
• Pentaquarks with anticharm or beauty revisited
• New ${\Lambda }_b(6072{)}^0$ state as a $2S$ bottom baryon

Cited by in corpus (19)

• Tetra- and penta-quark structures in the constituent quark model
• $T_{cc}^{+}$ and its partners
• Exotic resonances of fully-heavy tetraquarks in a lattice-QCD insipired quark model
• Doubly heavy tetraquarks in a chiral-diquark picture
• The $\mathbf{sQ}\bar{\mathbf{q}}\bar{\mathbf{q}}$ $(\mathbf{q}=\mathbf{u},\mathbf{d};\mathbf{Q}=\mathbf{c},\mathbf{b})$ tetraquarks in the chiral quark model
• Hidden-charm tetraquarks with strangeness in the chiral quark model
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Importance of meson-meson and of diquark-antidiquark creation operators for a $\bar{b}\bar{b}ud$ tetraquark
• Triple-charm molecular states composed of $D^{\ast }{D}^{\ast }D$ and $D^{\ast }{D}^{\ast }{D}^{\ast }$
• Towards the discovery of novel $B_c$ states: radiative and hadronic transitions
• Fully-charm and -bottom pentaquarks in a Lattice-QCD inspired quark model
• Magnetic moments of the doubly charged axial-vector $T_{cc}^{++}$ states
• Masses and Magnetic Moments of Doubly Heavy Tetraquarks via Diffusion Monte Carlo Method
• Analysis of $\Omega (2012)$ as a molecule in the chiral quark model
• Doubly heavy tetraquark states in a mass splitting model
• The $\mathbf{X}(3872)$'s excitation and its connection with production at hadron colliders
• Bottomonium-like tetraquarks in a chiral quark model
• Search for tetraquark states $X_{cc\bar{s}\bar{s}}$ in $D_s^{+}{D}_s^{+}(D_s^{\ast +}{D}_s^{\ast +})$ final states at Belle
• ${\Xi }_c(3055)$ as a scaling point to establish the excited ${\Xi }_c^{(\prime )}$ family