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The tetra-heavy baryonium spectra
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The tetra-heavy baryonium spectra
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In this work, we investigate the spectra of the prospective tetracharm and tetrabottom baryonium, viz. the baryon-antibaryon states, in the framework of QCD sum rules. The non-perturbative contributions up to dimension 10 are taken into account. Numerical results indicate that there might exist 4 possible tetracharm baryonium states with masses $(7.33\pm0.12)$, $(7.42\pm0.13)$, $(7.68\pm0.17)$, and $(7.76\pm0.12)$ GeV for the quantum numbers of $0^{-+}$, $1^{--}$, $0^{++}$, and $1^{++}$, respectively. The corresponding tetrabottom partners are found lying respectively at $(19.41\pm 0.15)$, $(19.48\pm 0.15)$, $(19.77\pm 0.19)$ and $(19.84\pm 0.19)$ GeV. Additionally, we also analyze the spectra of the $\bar{\Xi}_{bc}\Xi_{bc}$ and $\bar{\Xi}_{cc}\Xi_{bb}$ baryonium states, which lie in the range of $13.77-14.40$ GeV and $13.39-14.14$ GeV, respectively. The possible baryonium decay modes are analyzed, which are hopefully measurable in LHC experiments.
Forward citations
Cited by 5 Pith papers
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Spectrum of $J^{PC} = 0^{\pm\pm}$ Gluonic Hidden-Charm Tetraquark States
QCD sum rule analysis predicts six stable gluonic hidden-charm tetraquark states with J^PC = 0^{±±} and estimates masses for their hidden-bottom partners.
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SU(3)-flavor breaking as a structural probe of hidden-charm-strange $0^{--}$ tetraquarks in a color-octet basis
SU(3) flavor breaking produces grouped rather than uniform mass shifts that distinguish [cc][ss]-type from [cs][sc]-type color-octet currents for 0-- hidden-charm-strange tetraquarks.
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Spectroscopy of hidden-heavy tetraquark states with $J^{PC}=0^{--}$ in a color-octet configuration
QCD sum rules yield mass predictions of 10.8-11.1 GeV for four hidden-bottom 0-- tetraquarks and 4.3-4.6 GeV for their hidden-charm partners in color-octet setups.
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Hidden-charm and -bottom tetraquark states with $J^{PC}=1^{-+}$ via QCD sum rules
QCD sum rules predict masses of 4.72-4.88 GeV for four hidden-charm 1^{-+} tetraquarks and 10.99-11.16 GeV for their hidden-bottom counterparts.
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QCD sum rule analysis of local meson-meson currents for the $K(1690)$ state
QCD sum rules with local meson-meson currents for the K(1690) consistently predict masses around 2 GeV or above, disfavoring a molecular interpretation in favor of a compact multiquark state.
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