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Hidden-charm decays of $X(3915)$ and $Z(3930)$ as the P-wave charmonia
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abstract
In this work, we investigate the $X(3915)$ and $Z(3930)$ decays into $J/\psi\omega$ with the $\chi_{c0}^\prime(2P)$ and $\chi_{c2}^\prime (2P)$ assignments to $X(3915)$ and $Z(3930)$, respectively. The results show that the decay width of $Z(3930)\to J/\psi\omega$ is at least one order smaller than that of $X(3915)\to J/\psi\omega$. This observation explains why only one structure $X(3915)$ has been observed in the $J/\psi\omega$ invariant mass spectrum for the process $\gamma\gamma\to J/\psi\omega $.
Forward citations
Cited by 3 Pith papers
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Two-body Hidden Charm Decays of $D$ Wave Charmonia
Using a meson-loop model calibrated to psi(3770) to J/psi eta, the paper predicts Gamma(psi2(3823) to J/psi eta) = 29.6 keV and smaller eta_c omega and psi3(3842) rates.
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Discovery potential of charmonium $2P$ states through the $e^+e^- \to \gamma D\bar{D}$ processes
Using the measured e+e- -> gamma X(3872) cross section as a reference, the authors predict measurable e+e- -> gamma chi_c0(2P) and e+e- -> gamma chi_c2(2P) production and propose the gamma D Dbar final state as a sear...
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Unquenched Charmonium and Beyond
This Lanzhou-group review argues that coupled-channel (unquenched) effects, not exotic constituents, are the common thread explaining charmonium anomalies from the rho-pi puzzle to the Y-problem states.
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