Exotic tetraquark states with the $qq\bar{Q}\bar{Q}$ configuration

Abstract

In this work, we study systematically the mass splittings of the $qq\bar{Q}\bar{Q}$ ($q=u$, $d$, $s$ and $Q=c$, $b$) tetraquark states with the color-magnetic interaction by considering color mixing effects and estimate roughly their masses. We find that the color mixing effect is relatively important for the $J^P=0^{+}$ states and possible stable tetraquarks exist in the $nn\bar{Q}\bar{Q}$ ($n=u$, $d$) and $ns\bar{Q}\bar{Q}$ systems either with $J=0$ or with $J=1$. Possible decay patterns of the tetraquarks are briefly discussed.

14 pages, 4 figures, 10 tables. Accepted by EPJC

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Cited by in corpus (15)

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• Masses of doubly heavy tetraquarks $T_{Q{Q}^{\prime }}$ in a relativized quark model
• Spectroscopy, lifetime and decay modes of the $T_{bb}^{-}$ tetraquark
• The Hydrogen Bond of QCD in Doubly Heavy Baryons and Tetraquarks
• ${\bar{B}}^{(\ast )}{\bar{B}}^{(\ast )}$ interactions in chiral effective field theory
• Fully heavy pentaquarks
• Exotic $bc\bar{q}\bar{q}$ four-quark states
• Production of exotic tetraquarks $QQ\bar{q}\bar{q}$ in heavy-ion collisions at the LHC
• The Hydrogen Bond of QCD
• Strong decays of double-charmed pseudoscalar and scalar $cc\overline{u}\overline{d}$ tetraquarks
• Triply heavy $QQ\bar{Q}\bar{q}$ tetraquark states
• Hidden and open heavy-flavor hadronic states
• The XYZ mesons: what they aren't
• Basics of doubly heavy tetraquarks