$D$ wave charmonia

Abstract

Inspired by the recent observations of the vector charmonium-like states at BES III Collaboration and $\psi (3842)$ at LHCb Collaboration, we comb the $D$ wave charmonium state in the present work. We first evaluate the possibility of $Y(4320)$ as $\psi (3^3{D}_1)$ by investigating its open charm decays in quark-pair creation model and we find the width of $Y(4320)$ can be reproduced in a reasonable parameter range. Moreover, we take $\psi (3770)$, $\psi (4160)$ and $Y(4320)$ as the scale of $1D$, $2D$ and $3D$ charmonia to estimate the open charm decays of other $D$ wave charmonia. The total and partial widths of $D$ wave charmonium states have been predicted, which could be tested by further measurements at LHCb and Belle II Collaborations.

10 pages, 9 figures, 7 tables, arcticle accepted for publication in the Phys.Rev.D

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