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arXiv · 1811.10339

The strong decay patterns of $Z_c$ and $Z_b$ states in the relativized quark model

Guang-Juan Wang·Xiao-Hai Liu·Li Ma·Xiang Liu·Xiao-Lin Chen·Wei-Zhen Deng·Shi-Lin Zhu
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Abstract

Employing the relativized quark model and the quark-interchange model, we investigate the decay of the charged heavy quarkonium-like states $Z_c(3900)$, $Z_c(4020)$, $Z_c(4430)$, $Z_b(10610)$ and $Z_b(10650)$ into the ground and radially excited heavy quarkonia via emitting a pion meson. The $Z_c$ and $Z_b$ states are assumed to be hadronic molecules composed of open-flavor heavy mesons. The calculated decay ratios can be compared with the experimental data, which are useful in judging whether the molecule state assignment for the corresponding $Z_c$ or $Z_b$ state is reasonable or not. The theoretical framework constructed in this work will be helpful in revealing the underlying structures of some exotic hadrons.

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Guang-Juan Wang, Xiao-Hai Liu, Li Ma, Xiang Liu, Xiao-Lin Chen, Wei-Zhen Deng, Shi-Lin Zhu. 2019-08-02. The strong decay patterns of $Z_c$ and $Z_b$ states in the relativized quark model. https://doi.org/10.1140/epjc%2Fs10052-019-7059-y

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