Abstract
The [Formula: see text] systems with J = 0 and J = 1 are dynamically investigated within the framework of two constituent quark models: the chiral quark model and the quark delocalization color screening model. The model parameters are taken from our previous work, which gave a good description of the proton–antiproton S-wave elastic scattering cross-section experimental data. The [Formula: see text] elastic scattering processes with coupling to [Formula: see text] state are studied. The results show that, there is no s-wave bound state as indicated by an enhancement near the threshold of [Formula: see text] in J/ψ decay. However, a [Formula: see text] resonance state is given in the quark delocalization color screening model.
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