Di-J/ structures from the quark Pauli-blocking effect
Abstract
The double-charmonium scattering states such as J/ J/, ηcJ/, and ηcηc are investigated by a simplified quark cluster model. It is found that the quark Pauli-principle over the c c c c system causes a rapid increase and a node in the two-meson phase shifts. The increase is not large enough to be regarded as a resonance, but if it is seen experimentally, that is most likely the quark Pauli-blocking effect.
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