Production of the $Z_b^{(\prime )}$ states from the ${\rm Y}(5S,6S)$ decays

Qi Wu, Dian-Yong Chen, Feng-Kun Guo

In the present work, we investigate the production mechanism of the $Z_b(10610)$ and $Z_b(10650)$ states from the ${\rm Y}(5S,6S)$ decays. Two types of bottom-meson loops are discussed.…