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$Z^+(4430)$ as a resonance in the $D_1(D_1^\prime)D^*$ channel
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abstract
We study the possibility that the $Z^+(4430)$ state observed by Belle is a $D_1D^*$ (or $D_1'D^*$) resonance in S-wave. Focusing on its decays, We find that the open-charm decay into $D^*D^*\pi$ is dominant. Furthermore, we use the re-scattering mechanism to study its hidden-charm decays and find that the re-scattering effects are significant in $D_1D^*$ channel but not in $D_1'D^*$ channel. For the $J^P=1^-$ candidate, with chosen parameters, we can get $\Gamma(Z^+\to\psi'\pi^+)/\Gamma(Z^+\to J/\psi\pi^+)\thickapprox 5.3$, which tends to account for why the $Z^+(4430)$ is difficult to be found in $J/\psi\pi^+$. However, the $0^-$ candidate can not be ruled out by our calculations.
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Cited by 1 Pith paper
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Observation and investigation of the $T_{c\bar{c}1}(4430)^{+}$ structure in $B^{+} \to \psi(2S) K_{\text{S}}^{0} \pi^{+}$ decays
First 4D amplitude analysis of B+ → ψ(2S) K_S0 π+ confirms the exotic T_{c c-bar 1}(4430)+ structure with properties consistent with prior observations in the isospin-related channel.
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