摘要
We study the potential of the future Higgs factories, including the ILC, CEPC, and FCC-ee with s=240-250 GeV on discovering axionlike particles (ALPs) through various production channels in the leptonic final states, e+e-→ff¯a, where f=e, μ, ν. We show that the e+e-→e+e-a with a→γγ provides the best bounds for the gaγγ and gaZZ couplings, while e+e-→νν¯a, with a→γγ offers the best bounds for the gaZZ and gaZγ couplings. The e+e-→μ+μ-a with a→γγ provides intermediate sensitivity to the gaZZ coupling. Our estimates of the bounds for the gaγγ, gaZγ, and gaZZ couplings as a function of ALP mass (Ma) ranging from 0.1 to 100 GeV provide valuable insights for future experiments aiming to detect ALPs. We find that gaγγ around 1.5×10-4 GeV-1 for Ma=0.1-6 GeV is currently not ruled out by any other experiments.