Three body open flavor decays of higher vector charmonium and bottomonium

Abstract

With an extended quark pair creation model we systematically study the OZI-allowed three body open flavor decays of higher vector charmonium and bottomonium states. We obtain that the $B{B}^{\ast }\pi$ and $B^{\ast }{B}^{\ast }\pi$ partial decay widths of ${\rm Y}(10860)$ are consistent with experiment, and the corresponding partial decay widths of ${\rm Y}(11020)$ can reach up to 2$\sim$3 MeV. Meanwhile the partial widths of $D{D}^{\ast }\pi$ and $D^{\ast }{D}^{\ast }\pi$ modes for most higher vector charmonium states can reach up to several MeV.

Comments: 5 pages, 1 figure; contribution to the proceedings of the XVIII International Conference on Hadron Spectroscopy and Structure, HADRON-2019. August 16-21, Guilin, China