Searches for multi-Z boson productions and anomalous gauge boson couplings at a muon collider* * Supported in part by the National Natural Science Foundation of China (12150005, 12075004, 12061141002) and MOST (2018YFA0403900)

Multi-boson productions can be exploited as novel probes either for standard model precision tests or new physics searches, and have become a popular research topic in ongoing LHC experiments and future collider studies, including those for electron–positron and muon–muon colliders. In this study, we focus on two examples, i.e., direct productions through annihilation at a muon collider, and productions through vector boson scattering (VBS) at a muon collider, with an integrated luminosity of . Various channels are considered, including and +2jets. The expected significance on these multi-Z boson production processes is reported based on a detailed Monte Carlo study and signal background analysis. Sensitivities on anomalous gauge boson couplings are also presented.