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Lepton flavor violating signals of a little Higgs model at high energy linear e+e- colliders
European Physical Journal C: Particles and Fields
Littlest Higgs (LH) model predicts the existence of the doubly charged scalars Φ^±±, which generally have large flavor changing couplings to leptons. We calculate the contributions of Φ^±± to the lepton flavor violating (LFV) processes l_i→ l_jγ and l_i→ l_jl_kl_k, and compare our numerical results with the current experimental upper limits on these processes. We find that some of these processes can give severe constraints on the coupling constant Y_ij and the mass parameter M_Φ. Taking intodoi:10.1140/epjc/s10052-007-0234-6 fatcat:znw2cm2kn5b3xnspme33bac6i4