Prediction of anomalous ${\rm Y}(5S)\to {\rm Y}(1^3{D}_J)\eta$ transitions

Bo Wang, Dian-Yong Chen, Xiang Liu

In this work, we study the hadronic loop contribution to the ${\rm Y}(5S)\to {\rm Y}(1^3{D}_J)\eta$ ($J=1,2,3$) transitions. We predict that the branching ratios of ${\rm Y}(5S)\to {\rm Y}(1^3{D}_1)\eta$, $Υ(5S)\to…