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We investigate the prospects for detecting axion-like particles (ALPs, dubbedas "a") via the decay $Z\rightarrow a f\bar{f}$ at future $Z$ factories.Considering the decay channels $a\rightarrow \mu^+ \mu^-$ and $a\rightarrow b\bar{b}$ , four types of signals $\mu^+ \mu^- /E$, $b b /E$, $e^+ e^- \mu^+\mu^-$ and $e^+ e^- b b$ are explored. We demonstrate that these channels arepromising for detecting ALPs at $Z$ factories and obtain the sensitivity boundson the couplings $g_{aZZ}$ and $g_{a\gamma Z}$.

Prospects for detecting axion-like particles via the decay $Z\rightarrow af\bar{f}$ at future $Z$ factories