Doubly hidden-charm/bottom $QQ\bar{Q}\bar{Q}$ tetraquark states

Abstract

We study the mass spectra for the $cc\bar{c}\bar{c}$ and $bb\bar{b}\bar{b}$ tetraquark states by developing a moment sum rule method. Our results show that the $bb\bar{b}\bar{b}$ tetraquarks lie below the threshold of ${\eta }_b(1S){\eta }_b(1S)$. They are probably stable and very narrow. The masses for the doubly hidden-charm states $cc\bar{c}\bar{c}$ are higher than the spontaneous dissociation thresholds of two charmonium mesons. We suggest to search for such states in the $J/\psi J/\psi$ and ${\eta }_c(1S){\eta }_c(1S)$ channels.

8 pages, 2 figures. More references added. Conference proceedings for 6th International Conference on New Frontiers in Physics (ICNFP 2017), Crete, Greece, 17-29 Aug, 2017

References in corpus (5)

• Multiquark Resonances
• Heavy-Quark QCD Exotica
• Hunting for exotic doubly hidden-charm/bottom tetraquark states
• Analysis of the $QQ\bar{Q}\bar{Q}$ tetraquark states with QCD sum rules
• Understanding the internal structures of the $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$

Cited by in corpus (12)

• Pentaquark and Tetraquark states
• Spectrum of the fully-heavy tetraquark state $QQ{\bar{Q}}^{\prime }{\bar{Q}}^{\prime }$
• Systematics of fully heavy tetraquarks
• Scalar Fully-heavy Tetraquark States $Q{Q}^{\prime }\bar{Q}\overline{Q^{\prime }}$ in QCD Sum Rules
• Nature of $X(6900)$ and its production mechanism at LHCb
• Fully-heavy tetraquark spectroscopy in the relativistic quark model
• The $S$- and $P$-wave fully charmed tetraquark states and their radial excitations
• Higher mass spectra of the fully-charmed and fully-bottom tetraquarks
• Producing fully-charm structures in the $J/\psi$-pair invariant mass spectrum
• Pseudoscalar charmonium pair interactions via the Pomeron exchange mechanism
• Exotic pentaquark states with the $qqQQ\bar{Q}$ configuration
• Masses of doubly heavy tetraquarks $QQ\bar{n}\bar{q}$ with $J^P=1^{+}$