In the simplest little Higgs model the new flavor-changing interactions
between heavy neutrinos and the Standard Model leptons can generate
contributions to some lepton flavor violating decays of Z-boson at one-loop
level, such as Z→τ±μ∓, Z→τ±e∓, and Z→μ±e∓. We examine the decay modes, and find that the branching
ratios can reach 10−7 for the three decays, which should be accessible at
the GigaZ option of the ILC.Comment: 12 pages, 9 figure