Hidden-charm decays of $X(3915)$ and $Z(3930)$ as the P-wave charmonia

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 $\gamma \gamma \to J/\psi \omega$.

5 pages, 3 figures and 1 table

References in corpus (10)

• Study of X(3915) --> J/ψω in two-photon collisions
• Study on contributions of hadronic loops to decays of $J/\psi \to$ vector $+$ pseudoscalar mesons
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• The evasion of helicity selection rule in ${\chi }_{c1}\to VV$ and ${\chi }_{c2}\to VP$ via intermediate charmed meson loops
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• The two-body open charm decays of $Z^{+}(4430)$
• Understanding the newly observed Y(4008) by Belle

Cited by in corpus (8)

• Where are $3P$ and higher $P-$wave states in the charmonium family?
• Two-Body Strong Decay of the 2P and 3P Charmonium states
• The possibility of $X(4014)$ as a $D^{\ast }{\bar{D}}^{\ast }$ molecular state
• Role of the newly measured $B\to KD\bar{D}$ process to establish ${\chi }_{c0}(2P)$ state
• Production of charmonium ${\chi }_{cJ}(2P)$ plus one $\omega$ meson by $e^{+}{e}^{-}$ annihilation
• Discovery potential of charmonium $2P$ states through the $e^{+}{e}^{-}\to \gamma D\bar{D}$ processes
• Proposed mixing between $2P$ and $1F$ wave charmonia
• Analysis of the ${\mathbf{e}}^{+}{\mathbf{e}}^{-}\to \mathbf{J}/\mathbf{\psi D}\bar{\mathbf{D}}$ reaction close to the threshold concerning claims of a ${\chi }_{c0}(2P)$ state