Cross section line shape of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ around the $Y(4260)$ mass region

Abstract

We demonstrate that the recent measurement of the cross section line shapes of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ can be naturally explained by the molecular picture for $Y(4260)$ where the $Y(4260)$ is treated as a hadronic molecule dominated by $\bar{D}{D}_1(2420)+c.c.$ This result is consistent with properties extracted for $Y(4260)$ as the $\bar{D}{D}_1(2420)+c.c.$ molecular state in other reactions such as $e^{+}{e}^{-}\to J/\psi \pi \pi$, $h_c\pi \pi$, $\bar{D}{D}^{\ast }\pi +c.c.$, and $\gamma X(3872)$.

6 pages, 2 Figures

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• Charmonium
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• Excited and exotic charmonium spectroscopy from lattice QCD
• Hadro-Charmonium
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• Hadron Loops: General Theorems and Application to Charmonium
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• Prediction of a missing higher charmonium around 4.26 GeV in $J/\psi$ family
• A note on the newly observed Y(4220) resonance
• Open charm contributions to the E1 transitions of $\psi (3686)$ and $\psi (3770)\to \gamma {\chi }_{cJ}$
• ${\chi }_{c0}\omega$ production in $e^{+}{e}^{-}$ annihilation through $\psi (4160)$

Cited by in corpus (9)

• Pentaquark and Tetraquark states
• Cross section measurements of $e^{+}{e}^{-}\to \omega {\chi }_{c0}$ from $\sqrt{s}=$4.178 to 4.278 GeV
• Emergence of molecular-type characteristic spectrum of hidden-charm pentaquark with strangeness embodied in the $P_{\psi s}^{\Lambda }(4338)$ and $P_{cs}(4459)$
• Exotic double-charm molecular states with hidden or open strangeness and around $4.5\sim 4.7$ GeV
• Investigating new type of doubly-charmed molecular tetraquarks composed of the charmed meson in $H$-doublet and the charmed meson in $T$-doublet
• Correlation of the hidden-charm molecular tetraquarks and the charmoniumlike structures existing in the $B\to XYZ+K$
• Newly observed $X(4630)$: a new charmoniumlike molecule
• Predicted $\Lambda \bar{\Lambda }$ and ${\Xi }^{-}{\bar{\Xi }}^{+}$ decay modes of the charmoniumlike $Y(4230)$
• Studying the $D_{1}D$ molecule in the Bethe-Salpeter equation approach