Exotic $QQ\bar{q}\bar{q}$, $QQ\bar{q}\bar{s}$ and $QQ\bar{s}\bar{s}$ states

Abstract

After constructing the possible $J^P=0^{-},0^{+},1^{-}$ and $1^{+}$ $QQ\bar{q}\bar{q}$ tetraquark interpolating currents in a systematic way, we investigate the two-point correlation functions and extract the corresponding masses with the QCD sum rule approach. We study the $QQ\bar{q}\bar{q}$, $QQ\bar{q}\bar{s}$ and $QQ\bar{s}\bar{s}$ systems with various isospins $I=0,1/2,1$. Our numerical analysis indicates that the masses of doubly-bottomed tetraquark states are below the threshold of the two bottom mesons, two bottom baryons and one doubly bottomed baryon plus one anti-nucleon. Very probably these doubly-bottomed tetraquark states are stable.

37 pages, 2 figures

References in corpus (18)

• Can the X(3872) be a 1^{++} four-quark state?
• X(3872) and Other Possible Heavy Molecular States
• Is X(3872) {\sl Really} a Molecular State?
• Is X(3872) a molecule?
• QCD sum rules study of $QQ-\bar{u}\bar{d}$ mesons
• Multi-quark hadrons from Heavy Ion Collisions
• The Vector and Axial-Vector Charmonium-like States
• New Hadron States
• Exotic meson-meson molecules and compact four--quark states
• Erratum: QCD sum rules study of the $J^{PC}=1^{--}$ charmonium $Y$ mesons
• Indications of a Four-Quark Structure for the X(3872) and X(3876) Particles from Recent Belle and BABAR Data
• Charmonium spectroscopy above thresholds
• Dynamical study of $\mathbf{QQ}-\bar{\mathbf{u}}\bar{\mathbf{d}}$ mesons
• Four-quark Bound States in Chiral SU(3) Quark Model
• The meson $Z^{+}(4430)$ as a tetraquark state
• Possible $J^{PC}=0^{--}$ Charmonium-like State
• The Possible J^{PC}=0^{--} Exotic State
• Heavy Quark Spectroscopy -- Theory Overview

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