$X_0(2866)$ as a $D^{\ast }{\bar{K}}^{\ast }$ molecular state

Abstract

Very recently the LHCb Collaboration reported the discovery of two open charm tetraquark states, $X_0(2866)$ and $X_1(2904)$. In the present work, we study the $D^{(\ast )}$ and ${\bar{K}}^{(\ast )}$ interaction in the one-boson exchange model and show that the $X_0(2866)$ can be understood as a $D^{\ast }{\bar{K}}^{\ast }$ molecule with $I(J^P)=0(0^{+})$, or at least it has a large molecular component. On the other hand, the $X_1(2904)$ can not be interpreted as a molecular state. Inspired by the discovery of the $X_0(2866)$ and the fact that the $D^{\ast }{\bar{K}}^{\ast }$ interaction is strong enough to generate a bound state, we also discuss likely existence of other open charm molecules. In the meson-meson sector, two molecules near the mass thresholds of $D{D}^{\ast }$ and $D^{\ast }{D}^{\ast }$ with $I(J^P)=0(1^{+})$ are obtained, and using the heavy quark flavor symmetry their $\bar{B}{\bar{B}}^{\ast }$ and ${\bar{B}}^{\ast }{\bar{B}}^{\ast }$ counterparts are also predicted. In the meson-baryon sector, 7 open charm molecules with $I=1/2$ near the mass thresholds of $D^{(\ast )}{\Sigma }_c^{(\ast )}$ naturally appear, as dictated by the heavy quark spin symmetry.

2 tables, 4 figures

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Cited by in corpus (67)

• An updated review of the new hadron states
• A survey of heavy-heavy hadronic molecules
• Coupled-channel approach to $T_{cc}^{+}$ including three-body effects
• Tetra- and penta-quark structures in the constituent quark model
• Hadronic molecules in B decays
• Analysis of the $X_0(2900)$ as the scalar tetraquark state via the QCD sum rules
• A study of the decays of $S-$wave ${\bar{D}}^{\ast }{K}^{\ast }$ hadronic molecules: the scalar $X_0(2900)$ and its spin partners $X_{J(J=1,2)}$
• The $X_0(2900)$ and its heavy quark spin partners in molecular picture
• $X_{0,1}$(2900) and $(D^{-}{K}^{+})$ invariant mass from QCD Laplace sum rules at NLO
• Mass spectrum and strong decays of tetraquark $\bar{c}\bar{s}qq$ states
• Heavy-strange meson molecules and possible candidates $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$, and $X_0(2900)$
• New scalar resonance $X_0(2900)$ as a ${\overline{D}}^{\ast }{K}^{\ast }$ molecule: Mass and width
• How to understand the $X(2900)$?
• Discriminating among interpretations for the $X(2900)$ states
• Doubly charmed molecular 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
• Tetraquarks with open charm favor
• Excited $K$ meson, $K_c(4180)$, with hidden charm as a $D\bar{D}K$ bound state
• The $T_{c\bar{s}}(2900)$ as a threshold effect from the interaction of the $D^{\ast }{K}^{\ast }$, $D_s^{\ast }\rho$ channels
• Charmed-strange tetraquarks and their decays in a potential quark model
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Masses and widths of the exotic molecular $B_{(s)}^{(\ast )}{B}_{(s)}^{(\ast )}$ states
• Mass spectra and decays of open-heavy tetraquark states
• Is $X(7200)$ the heavy anti-quark diquark symmetry partner of $X(3872)$?
• X_1(2900) as a D_1 K molecule
• On the structures of new scalar resonances $T_{cs0}^a(2900{)}^{++}$ and $T_{cs0}^a(2900{)}^0$
• Monte-Carlo Based QCD Sum Rules Analysis of $X_0(2900)$ and $X_1(2900)$
• The decays of the fully open flavor state $T_{c\bar{s}0}^0$ in a $D^{\ast }{K}^{\ast }$ molecule scenario
• Vector resonance $X_1(2900)$ and its structure
• Possible molecular states of ${\bar{D}}^{\ast }{K}^{\ast }$ ($D^{\ast }{K}^{\ast }$) and the new exotic states $X_0(2900)$ and $X_1(2900)$ ($T_{cs0}^a(2900{)}^0$ and $T_{cs0}^a(2900{)}^{++}$)
• $X_J(2900)$ states in a hot hadronic medium
• Modeling the resonance $T_{cs0}^a(2900{)}^{++}$ as a hadronic molecule $D^{\ast +}{K}^{\ast +}$
• Spectrum of the molecular tetraquarks: Unraveling the $T_{cs0}(2900)$ and $T_{c\bar{s}0}^a(2900)$
• Analysis of the $T_{c\bar{s}}(2900)$ and related tetraquark states with the QCD sum rules
• Color flux-tube nature of the states $T_{cs}(2900)$ and $T_{c\bar{s}}^a(2900)$
• X(2900) in a chiral quark model
• Unified description of the $Qs\bar{q}\bar{q}$ molecular bound states, molecular resonances and compact tetraquark states in the quark potential model
• Possibility of $T_{c\bar{s}}(2900)$ as the resonance-like structure induced by threshold effects
• Prediction of possible $D{K}_1$ bound states
• The roles of the $T_{c\bar{s}0}(2900{)}^0$ and $D_0^{\ast }(2300)$ in the process $B^{-}\to D_s^{+}{K}^{-}{\pi }^{-}$
• Studying the ${\bar{D}}_{1}K$ molecule in the Bethe-Salpeter equation approach
• Magnetic moment of the $X_1(2900)$ state in the diquark-antidiquark picture
• Doubly charmed pentaquark states in QCD sum rules
• Looking for the exotic $X_0(2866)$ and its $J^P=1^{+}$ partner in the ${\bar{B}}^0\to D^{(\ast )+}{K}^{-}{K}^{(\ast )0}$ reactions
• Molecular states of $D^{\ast }{D}^{\ast }{\bar{K}}^{\ast }$ nature
• $P_{cc}^N$ states in a unitarized coupled-channel approach
• Searching for $X_0(2900)$ and $X_1(2900)$ through the kaon induced reactions
• Is the resonance $X_0(2900)$ a ground-state or radially excited scalar tetraquark $[ud][\overline{c}\overline{s}]$?
• The role of electromagnetic interaction in the $X(3872)$ and its analogs
• Double pole structures of $X_1(2900)$ as the $P$-wave ${\bar{D}}^{\ast }{K}^{\ast }$ resonances
• Possible charmed-strange molecular dibaryons
• Possible open charm molecular pentaquarks from ${\Lambda }_c{K}^{(\ast )}/{\Sigma }_c{K}^{(\ast )}$ interactions
• Isospin violation effect and three-body decays of the $T_{cc}^{+}$ state
• Investigating the Isospin Property of $T_{cc}^{+}$ from its Dalitz Plot Distribution
• Spectroscopic Properties of Double-Strangeness Molecular Tetraquarks
• Molecular states in $D_s^{(\ast )+}{\Xi }_c^{{(}^{\prime },\ast )}$ systems
• Observation of the open-charm tetraquark candidate $T_{cs0}^{\ast }(2870{)}^0$ in the $B^{-}\to D^{-}{D}^0{K}_{\mathrm{S}}^0$ decay
• Predictions of super-exotic heavy mesons from $K^{\ast }{B}^{\ast }{B}^{\ast }$ interactions
• Investigation on the bottom analogs of the $T_{cc}^{+}$
• Theoretical study of the open-flavor tetraquark $T_{c\bar{s}}(2900)$ in the process ${\bar{B}}_s^0\to K^0{D}^0{\pi }^0$
• $D_1(2420)$ and its interactions with a kaon: open charm states with strangeness
• Strong decays of $a_0$, $f_0$, $f_2$, and $K_2^{\ast }$ resonances as dynamically generated states of two vector mesons
• Possible ${\Sigma }_c^{\ast }\bar{\Sigma }$ molecular states
• Five-flavor molecular pentaquarks in the ${\Xi }_b^{(\prime ,\ast )}{\bar{D}}^{(\ast )}$ and ${\Xi }_c^{(\prime ,\ast )}{B}^{(\ast )}$ systems
• Exotic hadrons associated with $b$-quark
• Predicting charmed-strange molecular tetraquarks with $K^{(\ast )}$ and $T$-doublet charmed or anticharmed meson
• Investigation of $T_{cs0}^{\ast }(2870{)}^0$ in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the PACIAE model