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

Abstract

We argue that the recent BESIII data on the cross section for the process $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ in the center of mass energy range 4.21 - 4.42 GeV can be described by the contribution of the known charmonium-like resonance $\psi (4160)$ with the mass of about 4190\,MeV. The value of the coupling in the transition $\psi (4160)\to {\chi }_{c0}\omega$ 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 ${\chi }_{c1}\omega$ and ${\chi }_{c2}\omega$ above their respective thresholds.

6 pages

References in corpus (3)

• Study of $e^{+}{e}^{-}\to \omega {\chi }_{cJ}$ at center-of-mass energies from 4.21 to 4.42 GeV
• Observation of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0{\chi }_{bJ}$ and search for $X_b\to \omega {\rm Y}(1S)$ at $\sqrt{s}\sim 10.867$ GeV
• Strong decays of the $XYZ$ states

Cited by in corpus (2)

• Observation of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ and missing higher charmonium $\psi (4S)$
• A note on the newly observed Y(4220) resonance