Three body open flavor decays of higher charmonium and bottomonium

Xin-Zhen Weng,Li-Ye Xiao,Wei-Zhen Deng,Shi-Lin Zhu,Xiao-Lin Chen

doi:10.1103/physrevd.99.094001

Xin-Zhen Weng, Li-Ye Xiao + Show 3 more

Open Access

https://doi.org/10.1103/physrevd.99.094001

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Abstract

In the present work, we study the 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 $B^*B^*\pi$ partial decay widths of the $\Upsilon(5S)$ state are consistent with the experiment, and the $BB^*\pi$ partial decay width of the $\Upsilon(5S)$ state is smaller but very close to the Belle's experiment. Meanwhile, (ii) the $BB^*\pi$ and $B^*B^*\pi$ decay widths of $\Upsilon(11020)$ can reachs $2\sim3$ MeV. In addition, (iii) for the most of higher vector charmonium states, the partial decay widths of the $DD^*\pi$ and $D^*D^*\pi$ modes can reach up to several MeV, which may be observed in future experiments.

Highlights

In 2003, the Belle Collaboration reported the first observation of the charmoniumlike state Xð3872Þ in exclusive BÆ → KÆπþπ−J=ψ decays [1]
We study the Okubo-Zweig-Iizuka-allowed three body open flavor decay properties of higher vector charmonium and bottomonium states with an extended quark pair creation model
In the framework of the extended 3P0 model, we find that (i) the BBπ and BÃBÃπ partial decay widths of the Υð10860Þ state are consistent with the experiment

Summary

INTRODUCTION

In 2003, the Belle Collaboration reported the first observation of the charmoniumlike state Xð3872Þ in exclusive BÆ → KÆπþπ−J=ψ decays [1]. A widely used framework for the strong decay is the quark pair creation (3P0) model In this model, the ccpair in the initial charmonium regroups with a qqpair created from the vacuum, which carries the vacuum quantum number JPC 1⁄4 0þþ, and decays into the outgoing open-charm mesons. Gui et al [26] studied the open-charm strong decays of higher charmonium states up to the 6P multiplet with their wave functions of charmonium states calculated in the linear potential and screened potential quark models. We follow the extended 3P0 model to study the three body open flavor decays of higher charmonium and bottomonium states through a different rearrangement (see Fig. 1).

THE 3P0 MODEL

Charmonium

Bottomonim

The effect of β

CONCLUSIONS