$Z_b(10650)$ and $Z_b(10610)$ states in a chiral quark model

Abstract

We perform a systematic study of $B{\bar{B}}^{\ast }$, $B^{\ast }{\bar{B}}^{\ast }$, $D{\bar{D}}^{\ast }$ and $D^{\ast }{\bar{D}}^{\ast }$ systems by using effective interaction in our chiral quark model. Our results show that the interactions of $B{\bar{B}}^{\ast }$, $B^{\ast }{\bar{B}}^{\ast }$, $D{\bar{D}}^{\ast }$ and $D^{\ast }{\bar{D}}^{\ast }$ states are attractive, which consequently result in $B{\bar{B}}^{\ast }$, $B^{\ast }{\bar{B}}^{\ast }$, $D{\bar{D}}^{\ast }$ and $D^{\ast }{\bar{D}}^{\ast }$ bound states. The recent observed exotic-like hadrons of $Z_b(10610)$ and $Z_b(10650)$ are, therefore in our approach, interpreted as loosely bound states of $B{\bar{B}}^{\ast }$ and $B^{\ast }{\bar{B}}^{\ast }$, while X(3872) and Y(3940) are $D{\bar{D}}^{\ast }$ and $D^{\ast }{\bar{D}}^{\ast }$ molecule states, respectively.

8 pages, 4 figures

References in corpus (20)

• The Exotic XYZ Charmonium-like Mesons
• Can the X(3872) be a 1^{++} four-quark state?
• X(3872) and Other Possible Heavy Molecular States
• Sigma_c Dbar and Lambda_c Dbar states in a chiral quark model
• $Z_b(10610{)}^{\pm }$ and $Z_b(10650{)}^{\pm }$ as the $B^{\ast }\bar{B}$ and $B^{\ast }{\bar{B}}^{\ast }$ molecular states
• The Vector and Axial-Vector Charmonium-like States
• Bound state nature of the exotic Z_b states
• X(3872) as a hadronic molecule and its decays to charmonium states and pions
• Could $Z_b(10610)$ be a $B^{\ast }\bar{B}$ molecular state?
• Deriving the existence of $B{\bar{B}}^{\ast }$ bound states from the X(3872) and Heavy Quark Symmetry
• Dynamics of Hadronic Molecule in One-Boson Exchange Approach and Possible Heavy Flavor Molecules
• Charmonium spectroscopy above thresholds
• Four-quark Bound States in Chiral SU(3) Quark Model
• The bound state problem of S-wave heavy quark meson-aitimeson systems
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• A possible Omega-pi molecular state
• Chiral SU(3) Quark Model Study of Tetraquark States: $cn\bar{n}\bar{s}/cs\bar{s}\bar{s}$
• Dynamical coupled-channel study of K* K*bar and omega phi states in a chiral quark model
• $Qq\bar{Q}{\bar{q}}^{\prime }$ States in Chiral SU(3) Quark Model
• A study of meson-meson potential in the chiral quark model

Cited by in corpus (15)

• Confirming the molecular nature of the $Z_b(10610)$ and the $Z_b(10650)$
• Hidden beauty molecules within the local hidden gauge approach and heavy quark spin symmetry
• The line shapes of the $Z_b(10610)$ and $Z_b(10650)$ in the elastic and inelastic channels revisited
• 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
• General considerations on the nature of $Z_b(10610)$ and $Z_b(10650)$ from their pole positions
• $Z_b(10610)$ and $Z_b^{\prime }(10650)$ decays in a covariant quark model
• Magnetic dipole moment of $Z_b(10610)$ in light-cone QCD
• Insights into $Z_b(10610)$ and $Z_b(10650)$ from dipion transitions from ${\rm Y}(10860)$
• Production of the $Z_b^{(\prime )}$ states from the ${\rm Y}(5S,6S)$ decays
• The $Z_b$ structures in a constituent quark model coupled-channels calculation
• Investigations on the light hadron decays of $Z_b(10610)$ and $Z_b(10650)$
• Production and absorption of exotic bottomonium-like states in high energy heavy ion collisions
• $Z_b(10610)$ in a hadronic medium
• $D$ wave bottomonia production from $Z_b^{(\prime )}$ decay
• An analysis on doubly bottom molecular tetraquarks composed of $H_{(s)}$ and $T_{(s)}$ doublets