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

Authors :
Wang, Guang-Juan
Liu, Xiao-Hai
Ma, Li
Liu, Xiang
Chen, Xiao-Lin
Deng, Wei-Zhen
Zhu, Shi-Lin
Source :
Eur.Phys.J. C79 (2019) no.7, 567
Publication Year :
2018

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.<br />Comment: 19 pages, 4 figures, version published in EPJC

Details

Database :
arXiv
Journal :
Eur.Phys.J. C79 (2019) no.7, 567
Publication Type :
Report
Accession number :
edsarx.1811.10339
Document Type :
Working Paper
Full Text :
https://doi.org/10.1140/epjc/s10052-019-7059-y