Interpretation of $Z_c(4025)$ as the Hidden Charm Tetraquark States via QCD Sum Rules

Abstract

By using QCD Sum Rules, we found that the charged hidden charm tetraquark $[cu][\bar{c}\bar{d}]$ states with $J^P=1^{-}$ and $2^{+}$, which are possible quantum numbers of the newly observed charmonium-like resonance $Z_c(4025)$, have masses of $m_{1^{-}}^c=(4.54\pm 0.20)\text{GeV}$ and $m_{2^{+}}^c=(4.04\pm 0.19)\text{GeV}$. The contributions up to dimension eight in the Operator Product Expansion (OPE) were taken into account in the calculation. The tetraquark mass of $J^P=2^{+}$ state was consistent with the experimental data of $Z_c(4025)$, suggesting the $Z_c(4025)$ state possessing the quantum number of $J^P=2^{+}$. Extending to the b-quark sector, the corresponding tetraquark masses $m_{1^{-}}^b=(10.97\pm 0.25)\text{GeV}$ and $m_{2^{+}}^b=(10.35\pm 0.25)\text{GeV}$ were obtained, which are testable in future B-factories.

15 pages, 6 figures, to appear in European Physical Journal C

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Cited by in corpus (43)

• The hidden-charm pentaquark and tetraquark states
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• Observation of $e^{+}{e}^{-}\to {\pi }^0{\pi }^0{h}_c$ and a neutral charmoniumlike structure $Z_c(4020{)}^0$
• Analysis of the $Z_c(4020)$, $Z_c(4025)$, $Y(4360)$ and $Y(4660)$ as vector tetraquark states with QCD sum rules
• QCD Sum Rules Approach to the $X,Y$ and $Z$ States
• Doubly Heavy Tetraquarks in QCD Sum Rules
• Scalar Fully-heavy Tetraquark States $Q{Q}^{\prime }\bar{Q}\overline{Q^{\prime }}$ in QCD Sum Rules
• Hadronic molecules in B decays
• About the exotic structure of $Z_{cs}$
• Analysis of the $Z_c(4200)$ as axial-vector molecule-like state
• Analysis of the hidden-charm tetraquark molecule mass spectrum with the QCD sum rules
• Analysis of the hidden-charm tetraquark mass spectrum with the QCD sum rules
• Landau equation and QCD sum rules for the tetraquark molecular states
• Tetraquark States with Open Flavors
• Possible structure of the newly found exotic state ${\eta }_1(1855)$
• Hidden-bottom and -charm hexaquark states in QCD sum rules
• Light baryonium spectrum
• The strong decay patterns of $Z_c$ and $Z_b$ states in the relativized quark model
• Photoproduction of the charged charmoniumlike $Z_c^{+}(4200)$
• XYZ-SU3 Breakings from Laplace Sum Rules at Higher Orders
• Triply-charmed dibaryon states or two-baryon scattering states from the QCD sum rules?
• Low-energy Scattering of $(D^{\ast }{\bar{D}}^{\ast }{)}^{\pm }$ System and the Resonance-like Structure $Z_c(4025)$
• Production of $Z_c(3900$) and $Z_c(4020)$ in $B_c$ decay
• Analysis of the scalar doubly charmed hexaquark state with QCD sum rules
• Possible hadronic molecular states composed of $S$-wave heavy-light mesons
• Gluonic nature of the newly observed state $X(2600)$
• Understanding the ${\eta }_c\rho$ decay mode of $Z_c^{(\prime )}$ via the triangle loop mechanism
• Molecular states with hidden charm and strange in QCD Sum Rules
• Double Exotic States Productions in Pion and Kaon Induced Reactions
• The strange cousin of the $Z_c(4020/4025)$ as tetraquark state
• Charged charmoniumlike structures in the $e^{+}{e}^{-}\to \psi (3686){\pi }^{+}{\pi }^{-}$ process based on the ISPE mechanism
• Triply-charmed hexaquark states with the QCD sum rules
• Universal non-resonant explanation to charmoniumlike structures $Z_c(3885)$ and $Z_c(4025)$
• Scalar hidden-charm tetraquark states with QCD sum rules
• Mass spectra of $0^{--}$ and $0^{+-}$ hidden-heavy baryoniums
• Radiative decays of the neutral $Z_c(3900)$ and $Z_c(4020)$
• Spectrum of Light Hexaquark States in Triquark-antitriquark Configuration
• Mass spectrum of the $\Omega \bar{\Omega }$ states
• Two-body strong decays of the hidden-charm tetraquark molecular states via the QCD sum rules
• Fully strange tetraquark states via QCD sum rules
• The scalar and pseudoscalar hidden-charm tetraquark states with QCD sum rules
• Strange pentaquark molecules in QCD sum rules
• X, Y and Z States