Canonical Charmonium Interpretation for Y(4360) and Y(4660)

Abstract

In this work, we consider the canonical charmonium assignments for Y(4360) and Y(4660). Y(4660) is good candidate of $5^3{\mathrm{S}}_1$ $c\bar{c}$ state, the possibility of Y(4360) as a $3^3{\mathrm{D}}_1$ $c\bar{c}$ state is studied, and the charmonium hybrid interpretation of Y(4360) can not be excluded completely. We evaluate the $e^{+}{e}^{-}$ leptonic widths, E1 transitions, M1 transitions and the open flavor strong decays of Y(4360) and Y(4660). Experimental tests for the charmonium assignments are suggested.

Comments: 32 pages, 4 figures