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arXiv · 1901.06946

Settling the $Z_c(4600)$ in the charged charmonium-like family

Hua-Xing Chen·Wei Chen
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Abstract

Very recently LHCb reported the evidence of a new charged charmonium-like structure in the $J/ψπ^-$ invariant mass spectrum near 4600 MeV. In this work we investigate this structure together with three other charged charmonium-like states, the $Z_c(3900)$, $Z_c(4020)$, and $Z_c(4430)$. Our results suggest that the two higher states can be established as the first radial excitations of the two lower ones, all of which have the quantum numbers $J^{PC}=1^{+-}$. We propose to search for more relationship among exotic hadrons in order to better understand them.

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Hua-Xing Chen, Wei Chen. 2019-01-21. Settling the $Z_c(4600)$ in the charged charmonium-like family. https://doi.org/10.1103/physrevd.99.074022

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