Cross section measurements of $e^{+}{e}^{-}\to \omega {\chi }_{c0}$ from $\sqrt{s}=$4.178 to 4.278 GeV

Abstract

The cross section of the process $e^{+}{e}^{-}\to \omega {\chi }_{c0}$ is measured at center-of-mass energies from $\sqrt{s}=$ 4.178 to 4.278 GeV using a data sample of 7 fb${}^{-1}$ collected with the BESIII detector operating at the BEPCII storage ring. The dependence of the cross section on $\sqrt{s}$ shows a resonant structure with mass of $(4218.5\pm 1.6(\text{stat.})\pm 4.0(\text{syst.}))$ MeV/$c^2$ and width of $(28.2\pm 3.9(\text{stat.})\pm 1.6(\text{syst.}))$ MeV, respectively. This observation confirms and improves upon the result of a previous study. The angular distribution of the $e^{+}{e}^{-}\to \omega {\chi }_{c0}$ process is extracted for the first time.

8 pages, 4 figures, 3 tables

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• Strong decays of the $XYZ$ states
• Cross section line shape of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ around the $Y(4260)$ mass region
• A note on the newly observed Y(4220) resonance
• ${\chi }_{c0}\omega$ production in $e^{+}{e}^{-}$ annihilation through $\psi (4160)$

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• The Spectrum of $P$-Wave Hidden-Charm Exotic Mesons in the Diquark Model
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• Confirming the existence of a new higher charmonium $\psi (4500)$ by the newly released data of $e^{+}{e}^{-}\to K^{+}{K}^{-}J/\psi$
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• Global coupled-channel analysis of $e^{+}{e}^{-}\to c\bar{c}$ processes in $\sqrt{s}=3.75-4.7$ GeV
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• Search for new decay modes of the ${\psi }_2(3823)$ and the process $e^{+}{e}^{-}\to {\pi }^0{\pi }^0{\psi }_2(3823)$
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• Radiative Transitions of Charmoniumlike Exotics in the Dynamical Diquark Model
• Updated measurements of the M1 transition $\psi (3686)\to \gamma {\eta }_c(2S)$ with ${\eta }_c(2S)\to K\bar{K}\pi$
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• Search for New Hadronic Decays of $h_c$ and Observation of $h_c\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}{\pi }^0$
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• Observation of Three Resonant Structures in the Cross Section of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{h}_c$
• Cross section measurements of $e^{+}{e}^{-}\to \Phi K^{+}{K}^{-}$ and $e^{+}{e}^{-}\to \Phi K_S^0{K}_S^0$ at center-of-mass energies between 3.7730 GeV and 4.7008 GeV
• Search for the reaction $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\chi }_{cJ}$ and a charmonium-like structure decaying to ${\chi }_{cJ}{\pi }^{\pm }$ between 4.18 and 4.60 GeV
• Cross section measurement of $e^{+}{e}^{-}\to \eta \psi (2S)$ and search for $e^{+}{e}^{-}\to \eta \tilde{X}(3872)$
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• Exotic Charmonium at BESIII
• Measurements of the branching fractions of the $P$-wave charmonium spin-singlet state $h_c{(}^1{P}_1)\to h^{+}{h}^{-}{\pi }^0/\eta$
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