Speaker
Xin-Zhen Weng
(Peking University)
Description
We study the Okubo-Zweig-Iizuka
(OZI) allowed three body open flavor
decay properties of higher vector charmonium and bottomonium states
with an extended quark pair creation model. For the bottomonium
system, we get that (i) the $BB\pi$ and $B^{\ast}B^{\ast}\pi$ partial decay
widths of the $\Upsilon(10860)$ state are consistent with the
experiment, and the $BB^{\ast}\pi$ partial decay width of the
$\Upsilon(10860)$ state is smaller but very close to the Belle's
experiment. Meanwhile, (ii) the $BB^{\ast}\pi$ and $B^{\ast}B^{\ast}\pi$ decay
widths of $\Upsilon(11020)$ can reach $2\sim3$ MeV. In addition,
(iii) for most of the higher vector charmonium states, the partial
decay widths of the $DD^{\ast}\pi$ and $D^{\ast}D^{\ast}\pi$ modes can reach up to
several MeV, which may be observed in future experiments.
Primary authors
Li-Ye Xiao
(Peking University)
Xin-Zhen Weng
(Peking University)
Co-authors
Prof.
Shi-Lin ZHU
(Peking University)
Wei-Zhen Deng
(Peking University)
Xiao-Lin Chen
(Peking University)
