$\{Q\bar{s}\}\{{\bar{Q}}^{{(}^{\prime })}s\}$ molecular states in QCD sum rules

Abstract

We systematically investigate the mass spectra of $\{Q\bar{s}\}\{{\bar{Q}}^{{(}^{\prime })}s\}$ molecular states in the framework of QCD sum rules. The interpolating currents representing the molecular states are proposed. Technically, contributions of the operators up to dimension six are included in operator product expansion (OPE). The masses for molecular states with various $\{Q\bar{s}\}\{{\bar{Q}}^{{(}^{\prime })}s\}$ configurations are presented. The result $4.36\pm 0.08GeV$ for the $D_s^{\ast }{\bar{D}}_{s0}^{\ast }$ molecular state is consistent with the mass $4350_{-5.1}^{+4.6}\pm 0.7MeV$ of the newly observed $X(4350)$, which could support $X(4350)$ interpreted as a $D_s^{\ast }{\bar{D}}_{s0}^{\ast }$ molecular state.

19 pages, 30 eps figures

References in corpus (26)

• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• The Spin Structure of the Nucleon
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
• New Charmonium States in QCD Sum Rules: a Concise Review
• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Can the X(3872) be a 1^{++} four-quark state?
• X(3872) and Other Possible Heavy Molecular States
• Is X(3872) a molecule?
• Hadronic molecule structure of the Y(3940) and Y(4140)
• Y(4143) is probably a molecular partner of Y(3930)
• Evidence for a new resonance and search for the Y(4140) in $\gamma \gamma \to \varphi J/\psi$
• Is Z^+(4430) a loosely bound molecular state?
• Heavy baryon spectroscopy in QCD
• $Z^{+}(4430)$ as a $D_1^{\prime }{D}^{\ast }$ ($D_1{D}^{\ast }$) molecular state
• Deciphering triply heavy baryons in terms of QCD sum rules
• Analysis of the Y(4140) with QCD sum rules
• A QCD sum rule calculation for the Y(4140) narrow structure
• Erratum: QCD sum rules study of the $J^{PC}=1^{--}$ charmonium $Y$ mesons
• QCD sum rules study of the meson Z^+(4430)
• Threshold effect and π^\pm ψ(2S) peak
• Possible Molecular States of $D_s^{\ast }{\bar{D}}_s^{\ast }$ System and Y(4140)
• $(Q\bar{s}{)}^{(\ast )}(\bar{Q}s{)}^{(\ast )}$ molecular states from QCD sum rules: a view on Y(4140)
• The meson $Z^{+}(4430)$ as a tetraquark state
• Can the ${\pi }^{+}{\chi }_{c1}$ resonance structures be $D^{\ast }{\bar{D}}^{\ast }$ and $D_1\bar{D}$ molecules?
• Width of exotics from QCD sum rules : tetraquarks or molecules?
• Mass spectra of the heavy baryons Lambda_Q and Sigma_Q^(*) from QCD sum rules

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• Tetraquark state candidates: $Y(4140)$, $Y(4274)$ and $X(4350)$
• Weak decays of the axial-vector tetraquark $T_{bb;\bar{u}\bar{d}}^{-}$
• Analysis of the $X(3960)$ and related tetraquark molecular states via the QCD sum rules
• Charmonium states in QCD-inspired quark potential model using Gaussian expansion method
• Study of Doubly Heavy Baryon Spectrum via QCD Sum Rules
• Open charm-bottom scalar tetraquarks and their strong decays
• Analysis of the X(4350) as a scalar $\bar{c}c$ and $D_s^{\ast }{\bar{D}}_s^{\ast }$ mixing state with QCD sum rules
• Analysis of the $Y(4220)$ and $Y(4390)$ as molecular states with QCD sum rules
• Search for the $Y(4140)$ via $e^{+}{e}^{-}\to \gamma \varphi J/\psi$ at $\sqrt{s}=$ 4.23, 4.26 and 4.36 GeV
• XYZ-SU3 Breakings from Laplace Sum Rules at Higher Orders
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• Open charm-bottom axial-vector tetraquarks and their properties
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• Charmonium: Conventional and $XYZ$ States in a Relativistic Screened Potential Model
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• Decay properties of the $X(3872)$ through the Fierz rearrangement
• A QCD sum rules calculation of the $J/\psi D_s^{\ast }{D}_s$ strong coupling constant
• The role of electromagnetic interaction in the $X(3872)$ and its analogs
• Analysis of the tetraquark and hexaquark molecular states with the QCD sum rules
• Scalar hidden-charm tetraquark states with QCD sum rules
• Exploratory study of X(4140) in QCD sum rules
• QCD sum rules study of X(4350)
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• Tetraquark molecular states in the $D_s{\bar{D}}_{s1}$ and $D_s^{\ast }{\bar{D}}_{s0}^{\ast }$ mass spectrum
• Strong decays of the vector tetraquark states with the masses about $4.5\mathrm{GeV}$ via the QCD sum rules
• Mixing of X and Y states from QCD Sum Rules analysis
• Estimating strong decays of X(3915) and X(4350)
• Semileptonic Decays of $B_s^{\ast \ast }$ mesons into $D_{s1}$ and $D_{s2}^{\ast }$ in HQET
• Review on low and high mass spectroscopy
• Recent two-photon results at Belle