Three body open flavor decays of higher vector charmonium and bottomonium

TL;DR

This study uses an extended quark pair creation model to analyze three-body open flavor decays of higher vector charmonium and bottomonium states, providing theoretical decay widths consistent with experimental data.

Contribution

It introduces an extended quark pair creation model to systematically study OZI-allowed three-body decays of higher vector quarkonium states.

Findings

Partial decay widths of $B^*\u0014 ext{pi}$ and $B^*B^* ext{pi}$ for $ ext{Upsilon}(10860)$ match experimental data.

Decay widths of $D^* ext{pi}$ and $D^* ext{pi}$ modes for higher vector charmonium states reach several MeV.

Partial widths of $B^*B^* ext{pi}$ can reach up to 2-3 MeV for $ ext{Upsilon}(11020)$.

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 $BB^*\pi$ and $B^*B^*\pi$ partial decay widths of $\Upsilon(10860)$ are consistent with experiment, and the corresponding partial decay widths of $\Upsilon(11020)$ can reach up to 2$\sim$3 MeV. Meanwhile the partial widths of $DD^*\pi$ and $D^*D^*\pi$ modes for most higher vector charmonium states can reach up to several MeV.