Interpreting the $X(5568)$

Abstract

A variety of options for interpreting the DØ state, $X(5568)$, are examined. We find that threshold, cusp, molecular, and tetraquark models are all unfavoured. Several experimental tests for unravelling the nature of the signal are suggested.

8 pages, 4 figures, updated version for journal publication

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• A QCD sum rule study for a charged bottom-strange scalar meson
• Is the exotic $X(5568)$ a bound state?
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Cited by in corpus (52)

• Hadronic molecules
• The $XYZ$ states: experimental and theoretical status and perspectives
• Multiquark Resonances
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• A review of the open charm and open bottom systems
• Threshold cusps and triangle singularities in hadronic reactions
• Exotic Hadrons from Heavy Ion Collisions
• Heavy-flavored tetraquark states with the $QQ\bar{Q}\bar{Q}$ configuration
• Towards a theory of hadron resonances
• Open-charm tetraquark $X_c$ and open-bottom tetraquark $X_b$
• Triangle singularity as the origin of $X_0(2900)$ and $X_1(2900)$ observed in $B^{+}\to D^{+}{D}^{-}{K}^{+}$
• Open charm and bottom tetraquarks in an extended relativized quark model
• Searching for possible ${\Omega }_c-$like molecular states from ${\Xi }_c^{\ast }\bar{K}/{\Xi }_c{\bar{K}}^{\ast }/{\Xi }_c^{\prime }{\bar{K}}^{\ast }$ interaction
• Search for the X(5568) state decaying into ${\mathrm{B}}_{\mathrm{s}}^0{\pi }^{\pm }$ in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Spectrum and rearrangement decays of tetraquark states with four different flavors
• Four-quark structure of Zc(3900), Z(4430) and Xb(5568) states
• Analysis of the $X(5568)$ as scalar tetraquark state in the diquark-antidiquark model with QCD sum rules
• Kinematical Cusp and Resonance Interpretations of the $X(2900)$
• Discriminating among interpretations for the $X(2900)$ states
• $P$-wave coupled-channel scattering of $B_s\pi ,B_s^{\ast }\pi ,B\overline{K},B^{\ast }\overline{K}$ and the puzzling $X(5568)$
• Is the exotic $X(5568)$ a bound state?
• Open-flavor charmed/bottom $sq\bar{q}\bar{Q}$ and $qq\bar{q}\bar{Q}$ tetraquark states
• Triply heavy tetraquark states with the $QQ\bar{Q}\bar{q}$ configuration
• Masses of open charm and bottom tetraquark states in a relativized quark model
• $B_s{\pi }^{+}$ scattering and search for X(5568) with lattice QCD
• X(5568) as a $su\bar{d}\bar{b}$ tetraquark in a simple quark model
• The decays of the fully open flavor state $T_{c\bar{s}0}^0$ in a $D^{\ast }{K}^{\ast }$ molecule scenario
• Where does the X(5568) structure come from?
• B_c^+- decays into tetraquarks
• $B_s\pi$--$B\bar{K}$ interactions in finite volume and the $X(5568)$
• Generating a resonance-like structure in the reaction $B_c\to B_s\pi \pi$
• Triply heavy $QQ\bar{Q}\bar{q}$ tetraquark states
• X(2900) in a chiral quark model
• Production of Charmed Tetraquarks from $B_c$ and $B$ decays
• Possibility of $T_{c\bar{s}}(2900)$ as the resonance-like structure induced by threshold effects
• Testing the doubly charged charm-strange tetraquarks
• searches for ud\bar{s}\bar{b} in the chiral quark model
• Weak Decays of Stable Open-bottom Tetraquark by SU(3) Symmetry Analysis
• Investigating tetraquarks composed of $us\bar{d}\bar{b}$ and $ud\bar{s}\bar{b}$
• Estimating decay rate of $X^{\pm }(5568)\to B_s{\pi }^{\pm }$ while assuming them to be molecular states
• Study of X(5568) in a unitary coupled-channel approximation of $B\bar{K}$ and $B_s\pi$
• Resonance $X(5568)$ as an exotic axial-vector state
• Exploring the mass spectrum and the electromagnetic properties of the possible ${\Xi }_{cc}{K}^{(\ast )}$ and ${\Xi }_{cc}{\bar{K}}^{(\ast )}$ molecules
• The bottomed strange molecules with isospin 0
• In the Pursuit of $X(5568)$ and its Charmed Partner
• How can $X^{\pm }(5568)$ escape detection?
• Studying the bound state of the $B\bar{K}$ system in the Bethe-Salpeter formalism
• Tetraquark mass relations in quark and diquark models
• Mass Spectrum of Exotic X(5568) State via Artificial Neural Network
• The possible $B\pi$ molecular state and its radiative decay
• Chiral excitations of open-beauty systems
• X, Y and Z States