Coupled-Channel-Induced $S-D$ mixing of Charmonia and Testing Possible Assignments for $Y(4260)$ and $Y(4360)$

Abstract

The mass spectrum and the two-body open-charm decays of the $J^{PC}=1^{--}$ charmonium states are studied with the coupled-channel effects taken into account. The coupled-channel-induced mixing effects among the excited vector charmonia are studied. Based on our calculations of the masses and the decay widths, we find that the tension between the observed properties of $Y(4260)/Y(4360)$ and their conventional charmonia interpretations could be softened.

arXiv comment13 pages, 5 figures, 5 tables

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• Pentaquark and Tetraquark states
• Predicting a new resonance as charmed-strange baryonic analog of $D_{s0}^{\ast }(2317)$
• Two-Body Strong Decay of the 2P and 3P Charmonium states
• Charmonium states in a coupled-channel model
• Mass spectrum of $1^{--}$ heavy quarkonium
• Coherent photoproduction of heavy quarkonia on nuclei
• Coupled-channel study of $4S$-$3D$ mixing dynamics in $\psi (4220)$ and $\psi (4380)$
• Proposed mixing between $2P$ and $1F$ wave charmonia