Impact of $Z\to {\eta }_{c,b}+g+g$ on the inclusive ${\eta }_{c,b}$ meson yield in $Z$-boson decay

Zhan Sun, Xuan Luo, Ying-Zhao Jiang

In this paper, we carry out the next-to-leading-order QCD corrections to $Z\to {\eta }_Q+g+g(Q=c,b)$ (labeled as $gg$) through the color-singlet (CS) state of $Q\bar{Q}{[}^1{S}_0^{[1]}]$,…