Hidden-Charm Tetraquarks and Charged Zc States

Abstract

Experimentally several charged axial-vector hidden-charm states were reported. Within the framework of the color-magnetic interaction, we have systematically considered the mass spectrum of the hidden-charm and hidden-bottom tetraquark states. It is impossible to accommodate all the three charged states $Z_c(3900)$, $Z_c(4025)$ and $Z_c(4200)$ within the axial vector tetraquark spectrum simultaneously. Not all these three states are tetraquark candidates. Moreover, the eigenvector of the chromomagnetic interaction contains valuable information of the decay pattern of the tetraquark states. The dominant decay mode of the lowest axial vector tetraquark state is $J/\psi \pi$ while its $D^{\ast }\bar{D}$ and ${\bar{D}}^{\ast }{D}^{\ast }$ modes are strongly suppressed, which is in contrast with the fact that the dominant decay mode of $Z_c(3900)$ and $Z_c(4025)$ is $\bar{D}{D}^{\ast }$ and ${\bar{D}}^{\ast }{D}^{\ast }$ respectively. We emphasize that all the available experimental information indicates that $Z_c(4200)$ is a very promising candidate of the lowest axial vector hidden-charm tetraquark state.

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Cited by in corpus (16)

• $Z_b$ and $Z_c$ Exotic States as Coupled Channel Cusps
• Employing spin symmetry to disentangle different models for the XYZ states
• Study of charmonium-like and fully-charm tetraquark spectroscopy
• Doubly heavy tetraquarks in an extended chromomagnetic model
• Fully heavy pentaquarks
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Heavy flavor pentaquarks with four heavy quarks
• Molecular Interpretation of the Supercharmonium State Z(4475)
• Manifestly exotic pentaquarks with a single heavy quark
• Further signatures to support the tetraquark mixing framework for the two light-meson nonets
• Where are the hidden-charm hexaquarks?
• Production of $Z_c(3900$) and $Z_c(4020)$ in $B_c$ decay
• Charged charmoniumlike structures in the $e^{+}{e}^{-}\to \psi (3686){\pi }^{+}{\pi }^{-}$ process based on the ISPE mechanism
• Systematics of fully heavy dibaryons
• Determination of parameters of a potential model for tetraquark study by studying all S-wave mesons
• Investigation of the $X(4020)$ peak in the $D^{\ast }{\bar{D}}^{\ast }$ and $\pi h_c$ channels