Chengrong Deng, Jialun Ping, Youchang Yang, Fan Wang
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 $I^GJ^{PC}=0^+0^{-+}$, 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.
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http://arxiv.org/abs/1202.4167
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