X(1835), X(2120) and X(2370) in a flux tube model

Abstract

Nonstrange baryonium spectrum is systematically studied by using the Gaussian expansion method in a flux tube model with the six-body confinement potential. All the model parameters are fixed by baryon properties, so the baryonium calculation is parameter-free. We find that X(1835) and X(2370), which are observed in the radiative decay of $J/\psi$ by BES collaboration, can be described as $N_8{\bar{N}}_8$ and ${\Delta }_8{\bar{\Delta }}_8$ bound states with quantum numbers $I^G{J}^{PC}=0^{+}{0}^{-+}$, respectively, such bound states should be color confinement resonances with three-dimensional configurations similar to dumbbell, however, X(2120) can not be accommodated in our model.

6 pages, 1 figure. arXiv admin note: text overlap with arXiv:1201.1768

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• Baryonia and near-threshold enhancements
• $S$- and $P$-wave fully-strange tetraquark states from QCD sum rules
• Systematic study of $Z_c^{+}$ family from quark model's perspective
• Hidden charmed states and multibody color flux-tube dynamics
• Light baryonium spectrum
• Heavy pentaquark states and a novel color structure
• QCD sum rule studies on the $ss\bar{s}\bar{s}$ tetraquark states of $J^{PC}=0^{-+}$
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