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arXiv · 1405.3581

Analysis of the $Z(4430)$ as the first radial excitation of the $Z_c(3900)$

Zhi-Gang Wang
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Abstract

In this article, we take the $Z_c(3900)$ and $Z(4430)$ as the ground state and the first radial excited state of the axial-vector tetraquark states with $J^{PC}=1^{+-}$, respectively, and study their masses and pole residues with the QCD sum rules by calculating the contributions of the vacuum condensates up to dimension-10 in a consistent way in the operator product expansion. The numerical result favors assigning the $Z_c(3900)$ and $Z(4430)$ as the ground state and first radial excited state of the axial-vector tetraquark states, respectively.

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Zhi-Gang Wang. 2014-12-08. Analysis of the $Z(4430)$ as the first radial excitation of the $Z_c(3900)$. https://doi.org/10.1088/0253-6102%2F63%2F3%2F325

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