$Z$-boson decays to a vector quarkonium plus a photon

Geoffrey T. Bodwin, Hee Sok Chung, June-Haak Ee +1

We compute the decay rates for the processes $Z\to V+\gamma$, where $Z$ is the $Z$ boson, $\gamma$ is the photon, and $V$ is one of the vector quarkonia $J/\psi$ or ${\rm Y}(nS)$, with $n=1$, $2$, or…