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The nature of near-threshold XYZ states
Martin Cleven, Feng-Kun Guo, Christoph Hanhart +2
We demonstrate that the recently observed , , states cannot be purely from kinematic effect. Especially the narrow near-threshold structures in elastic channels call for…
Photoproduction of hidden charm pentaquark states and
Qian Wang, Xiao-Hai Liu, Qiang Zhao
We propose to study the pentaquark candidates of and in photoproduction and look for further experimental evidence for their nature. Since the pho…
Understanding the newly observed heavy pentaquark candidates
Xiao-Hai Liu, Qian Wang, Qiang Zhao
We find that several thresholds can contribute to the enhancements of the newly observed heavy pentaquark candidates and via the anomalous triangle sing…
Employing spin symmetry to disentangle different models for the XYZ states
Martin Cleven, Feng-Kun Guo, Christoph Hanhart +2
In order to test different models proposed for some states discovered recently in the charmonium mass range that do not fit into the pattern predicted by the conventional quark mod…