$\chi_{c0} \, \omega$ production in $e^+e^-$ annihilation through $\psi(4160)$

We argue that the recent BESIII data on the cross section for the process $e^{+} e^{-} \to χ_{c 0} ω$ in the center of mass energy range 4.21 - 4.42 GeV can be described by the contribution of the known charmonium-like resonance $ψ (4160)$ with the mass of about 4190,MeV. The value of the coupling in the transition $ψ (4160) \to χ_{c 0} ω$ needed for this mechanism is comparable to that in another known similar transition $\chi_{c0}(2P) \to J/\psi , \omega$. The suggested mechanism also naturally explains the reported relative small value of the cross section for the final states $\chi_{c1} , \omega $a n d$ \chi_{c2} , \omega$ above their respective thresholds.

$χ_{c 0} ω$ production in $e^{+} e^{-}$ annihilation through $ψ (4160)$

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$χ_{c 0} ω$ production in $e^{+} e^{-}$ annihilation through $ψ (4160)$

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χc0 ωχc0​ω production in e+e−e+e− annihilation through ψ(4160)ψ(4160)

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χc0 ωχc0​ω production in e+e−e+e− annihilation through ψ(4160)ψ(4160)

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$χ_{c 0} ω$ production in $e^{+} e^{-}$ annihilation through $ψ (4160)$

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$χ_{c 0} ω$ production in $e^{+} e^{-}$ annihilation through $ψ (4160)$

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