Bottomonium-like tetraquarks in a chiral quark model

Abstract

The low-lying bottomonium-like tetraquarks $b\bar{b}q\bar{q}$ $(q=u,d,s)$ with spin-parity $J^P=0^{+}$, $1^{+}$ and $2^{+}$, and isospin $I=0,1$ or $\frac{1}{2}$, are systematically investigated within the theoretical framework of real- and complex-scaling range of a chiral quark model, which has already been successfully applied in analysis of several multiquark systems. A complete four-body $S$-wave function, which includes meson-meson, diquark-antidiquark and K-type arrangements of quarks, along with all possible color configurations are considered. In the $b\bar{b}q\bar{q}$ $(q=u,d)$ tetraquark system, we found resonance states of $B^{(\ast )}{\bar{B}}^{(\ast )}$, ${\rm Y}\omega$, ${\rm Y}\rho$ and ${\eta }_b\rho$ nature with all possible $I(J^P)$ quantum numbers. Their masses are generally located in the energy range $11.0-11.3$ GeV and their widths are less than $10$ MeV. In addition, extremely narrow resonances, with two-meson strong decay widths less than $1.5$ MeV, are obtained in both $b\bar{b}u\bar{s}$ and $b\bar{b}s\bar{s}$ tetraquark systems. Particularly, four radial excitations of ${\rm Y}{K}^{\ast }$ and ${\eta }_b{K}^{\ast }$ are found at $\sim 11.1$ GeV in $J^P=0^{+}$, $1^{+}$ and $2^{+}$ channels of $b\bar{b}u\bar{s}$ system. One ${\rm Y}(1S)\varphi (2S)$ resonance state is obtained at $11.28$ GeV in the $J^P=1^{+}$ sector.

arXiv comment19 pages, 16 tables and 13 figures. arXiv admin note: substantial text overlap with arXiv:2101.04933, arXiv:2109.04311

References in corpus (60)

• 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
• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Observation of two charged bottomonium-like resonances in Y(5S) decays
• Observation of structure in the $J/\psi$-pair mass spectrum
• A review of the open charm and open bottom systems
• Observation of an exotic narrow doubly charmed tetraquark
• Constituent quark model study of the meson spectra
• Observation of String Breaking in QCD
• From controversy to precision on the sigma meson: a review on the status of the non-ordinary $f_0(500)$ resonance
• Study of the doubly charmed tetraquark $T_{cc}^{+}$
• Evidence of a $J/\psi \Lambda$ structure and observation of excited ${\Xi }^{-}$ states in the ${\Xi }_b^{-}\to J/\psi \Lambda K^{-}$ decay
• A survey of heavy-heavy hadronic molecules
• Precise determination of the f0(600) and f0(980) pole parameters from a dispersive data analysis
• Amplitude analysis of the $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decay
• Observation of new resonances decaying to $J/\psi K^{+}$ and $J/\psi \varphi$
• Observation of a near-threshold structure in the $K^{+}$ recoil-mass spectra in $e^{+}{e}^{-}\to K^{+}(D_s^{-}{D}^{\ast 0}+D_s^{\ast -}{D}^0)$
• $Z_b(10610{)}^{\pm }$ and $Z_b(10650{)}^{\pm }$ as the $B^{\ast }\bar{B}$ and $B^{\ast }{\bar{B}}^{\ast }$ molecular states
• Model-independent study of structure in $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decays
• Bound state nature of the exotic Z_b states
• Bottomonium spectrum revisited
• Explaining the Many Threshold Structures in the Heavy-Quark Hadron Spectrum
• Tetra- and penta-quark structures in the constituent quark model
• Evidence for a new structure in the $J/\psi p$ and $J/\psi \bar{p}$ systems in $B_s^0\to J/\psi p\bar{p}$ decays
• Constituent quark model description of charmonium phenomenology
• Doubly-heavy tetraquarks
• On the size of the sigma meson and its nature
• Study of e+e- => B(*) B(*)-bar pi+- at sqrt(s)=10.866 GeV
• Deriving the existence of $B{\bar{B}}^{\ast }$ bound states from the X(3872) and Heavy Quark Symmetry
• Molecular components in P-wave charmed-strange mesons
• Amplitude analysis of e+e- => Y(nS)pi+pi- at sqrt(s)=10.865 GeV
• Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrisation for line shapes
• The structure of pentaquarks $P_c^{+}$ in the chiral quark model
• Hadronic molecules in B decays
• Triply-heavy baryons in a constituent quark model
• Study of the $B{\bar{B}}^{\ast }/D{\bar{D}}^{\ast }$ bound states in a Bethe-Salpeter approach
• The line shapes of the $Z_b(10610)$ and $Z_b(10650)$ in the elastic and inelastic channels revisited
• Charmonium resonances in the 3.9 GeV/$c^2$ energy region and the $X(3915)/X(3930)$ puzzle
• Study of $B{\bar{B}}^{\ast }$ and $B^{\ast }{\bar{B}}^{\ast }$ interactions in $I=1$ and relationship to the $Z_b(10610)$, $Z_b(10650)$ states
• Canonical description of the new LHCb resonances
• The S- and P-wave low-lying baryons in the chiral quark model
• Exotic resonances of fully-heavy tetraquarks in a lattice-QCD insipired quark model
• Spectroscopy of ${\mathbf{B}}_{\mathbf{c}}$ mesons and the possibility of finding exotic ${\mathbf{B}}_{\mathbf{c}}$-like structures
• Hidden-Bottom Pentaquarks
• The $Z_c$ structures in a coupled-channels model
• Charmed-strange Meson Spectrum: Old and New Problems
• Threshold effects in P-wave bottom-strange mesons
• Doubly Charmed Pentaquarks
• 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
• $QQ\bar{s}\bar{s}$ tetraquarks in the chiral quark model
• Masses and widths of the exotic molecular $B_{(s)}^{(\ast )}{B}_{(s)}^{(\ast )}$ states
• The strong decay patterns of $Z_c$ and $Z_b$ states in the relativized quark model
• $Z_b(10610)$ and $Z_b^{\prime }(10650)$ decays in a covariant quark model
• Study of $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays
• Tetraquark systems $\bar{b}b\bar{d}u$ in the static limit and lattice QCD
• The $Z_b$ structures in a constituent quark model coupled-channels calculation
• Composite nature of $Z_b$ states from data analysis

Cited by in corpus (2)

• Spectrum of the S-wave fully-heavy tetraquark states
• Insights into the exotic charged states $Z_b(10610)$ and $Z_b(10650)$ from their photoproduction off nuclei