Single production of the doubly charged scalar in the littlest Higgs model

Single production of the doubly charged scalars Φ±± via eγ, ep and pp collisions is studied in the context of the little Higgs (LH) model. Our numerical results show that the new particles Φ±± can be abundantly produced and their possible signatures should be detected in future high energy linear e+e− collider (ILC). The cross section for single production of Φ±± at the LHC is much smaller than that at the ILC or the THERA.