Can $X(5568)$ be a tetraquark state?

Abstract

Very recently, the D0 collaboration has reported the observation of a narrow structure, $X(5568)$, in the decay process $X(5568)\to B_s^0{\pi }^{\pm }$ using the 10.4${\mathrm{fb}}^{-1}$ data of $p\bar{p}$ collision at $\sqrt{s}=1.96$ TeV. This structure is of great interest since it is the first hadronic state with four different valence quark flavors, $b,s,u,d$. In this work, we investigate tetraquarks with four different quark flavors. Based on the diquark-antidiquark scheme, we study the spectroscopy of the tetraquarks with one heavy bottom/charm quark and three light quarks. We find that the lowest-lying S-wave state, a tetraquark with the flavor $[su][\bar{b}\bar{d}]$ and the spin-parity $J^P=0^{+}$, is about 150 MeV higher than the $X(5568)$. Further detailed experimental and theoretical studies of the spectrum, production and decays of tetraquark states with four different flavors in the future are severely needed towards a better understanding its nature and the classification of hadron exotic states.

5 pages,1 figure and 1 table;To be published on Chin.Phys.C

References in corpus (8)

• Heavy quarkonium: progress, puzzles, and opportunities
• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Observation of the resonant character of the $Z(4430{)}^{-}$ state
• The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks
• Four-Quark Hadrons: an Updated Review
• Hidden-Beauty Charged Tetraquarks and Heavy Quark Spin Conservation
• $X(5568)$ and and its partner states
• Strong decays of the $XYZ$ states

Cited by in corpus (31)

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• Search for a Structure in the $B_s^0{\pi }^{\pm }$ Invariant Mass Spectrum with the ATLAS Experiment
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• Tetraquark States with Open Flavors
• $P$-wave coupled-channel scattering of $B_s\pi ,B_s^{\ast }\pi ,B\overline{K},B^{\ast }\overline{K}$ and the puzzling $X(5568)$
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• 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
• Doubly charmed tetraquarks in a diquark-antidiquark model
• 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
• B_c^+- decays into tetraquarks
• $B_s\pi$--$B\bar{K}$ interactions in finite volume and the $X(5568)$
• Production of Charmed Tetraquarks from $B_c$ and $B$ decays
• searches for ud\bar{s}\bar{b} in the chiral quark model
• Testing the doubly charged charm-strange tetraquarks
• 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
• The bottomed strange molecules with isospin 0
• Magnetic moment of $X_Q$ state with $J^{PC}=1^{+\pm }$ in light cone QCD sum rules
• Mass Spectrum of Exotic X(5568) State via Artificial Neural Network
• X, Y and Z States