Probing little Higgs model in e+e-→νν̄γ process

We study the process e+e-→νν̄γ to search for its sensitivity to the extra gauge bosons Z2, Z3 and W2±, which are suggested by the little Higgs models. We find that the ILC with $\sqrt{s}= 0.5 {\text{TeV}}$ and CLIC with $\sqrt{s}=3 {\text{TeV}}$ cover different regions of the LHM parameters. We show that this channel can provide a determination of the parameters, complementary to measurements of the extra gauge bosons obtainable at the upcoming LHC experiments.