Mass spectra of 0-- and 0+- hidden-heavy baryoniums.

In this work, the spectra of the prospective exotic hidden-charm and hidden-bottom baryonium, viz. the baryon–antibaryon states, with J PC = 0 - - and 0 + - are investigated in the framework of QCD sum rules. The non-perturbative contributions up to dimension 12 are taken into account. Numerical results indicate that there might exist 3 possible 0 - - hidden-charm baryonium states with masses (5.22 ± 0.26) , (5.52 ± 0.25) , and (5.46 ± 0.24) GeV, and 5 possible 0 + - hidden-charm baryonium states with masses (4.76 ± 0.28) , (5.24 ± 0.28) , (5.16 ± 0.27) , (5.52 ± 0.27) , and (5.69 ± 0.27) GeV, respectively. The corresponding hidden-bottom partners are found lying in the range of 11.68 - 12.28 GeV and 11.38 - 12.33 GeV, respectively. The possible baryonium decay modes are analyzed, which are hopefully measurable in LHC experiments. [ABSTRACT FROM AUTHOR]