Hidden-bottom hadronic decays of ${\rm Y}(10753)$ with a ${\eta }^{(\prime )}$ or $\omega$ emission

Abstract

In this work, we propose the $4S$-$3D$ mixing scheme to assign the ${\rm Y}(10753)$ into the conventional bottomonium family. Under this interpretation, we further study its hidden-bottom hadronic decays with a ${\eta }^{(\prime )}$ or $\omega$ emission, which include ${\rm Y}(10753)\to {\rm Y}(1S){\eta }^{(\prime )}$, ${\rm Y}(10753)\to h_b(1P)\eta$ and ${\rm Y}(10753)\to {\chi }_{bJ}\omega$ ($J$=0,1,2) processes. Since the ${\rm Y}(10753)$ is above the $B\bar{B}$ threshold, the coupled-channel effect cannot be ignored, thus, when calculating partial decay widths of these ${\rm Y}(10753)$ hidden-bottom decays, we apply the hadronic loop mechanism. Our result shows that these discussed decay processes own considerable branching fractions with the order of magnitude of $10^{-4}\sim 10^{-3}$, which can be accessible at Belle II and other future experiments.

Comments: 10 pages, 6 figures and 1 table. Accepted by Phys. Rev. D