Revisit the tetraquark candidates in the $J/\psi J/\psi$ mass spectrum

Abstract

In this article, we introduce a relative P-wave to construct the doubly-charm axialvector diquark operator, then take the doubly-charm axialvector (anti)diquark operator as the basic constituent to construct the scalar and tensor tetraquark currents to study the scalar, axialvector and tensor fully-charm tetraquark states with the QCD sum rules. We observe that the ground state $\tilde{A}\tilde{A}$ type tetraquark states and the first radial excited states of the $AA$ type tetraquark states have almost degenerated masses, where the $\tilde{A}$ and $A$ stand for the diquark operators with and without the relative P-wave respectively, the broad structure above the $J/\psi J/\psi$ threshold maybe consist of several diquark-antidiquark type fully-charm tetraquark states.

11 pages, 3 figures. arXiv admin note: text overlap with arXiv:2006.13028

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Cited by in corpus (20)

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• Scalar Fully-heavy Tetraquark States $Q{Q}^{\prime }\bar{Q}\overline{Q^{\prime }}$ in QCD Sum Rules
• Fully-heavy tetraquark spectroscopy in the relativistic quark model
• Is the existence of a $J/\psi J/\psi$ bound state plausible?
• The $S$- and $P$-wave fully charmed tetraquark states and their radial excitations
• Higher mass spectra of the fully-charmed and fully-bottom tetraquarks
• $S$-wave fully charmed tetraquark resonant states
• Higher fully-charmed tetraquarks: Radial excitations and P-wave states
• Fully heavy pentaquarks
• All-charm tetraquark in front form dynamics
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Spectroscopy of all charm tetraquark states
• Going in quest of potential tetraquark interpretations for the newly observed $T_{\psi \psi }$ states in light of the diquark-antidiquark scenarios
• X(6200) as a compact tetraquark in the QCD string model
• Fully heavy pentaquark states in constituent quark model
• Triply-heavy tetraquarks in an extended relativized quark model
• Pseudoscalar charmonium pair interactions via the Pomeron exchange mechanism
• The two-body strong decays of the fully-charm tetraquark states
• Strong decays of the fully-charm tetraquark states with explicit P-waves via the QCD sum rules
• Analysis of the $X(4475/4710)$, $X(4500/4700)$, $Z_c(4600)$, $Z_{\bar{c}\bar{s}}(4600)$ and related tetraquark states with the QCD sum rules