Muon g-2 in the littlest Higgs model

In this paper, the anomalous magnetic dipole moment of muon in the littlest Higgs (LH) model is studied at one-loop level. We discuss the dependence of the contributions on the global symmetry breaking scale f, mixing angles c and c', and the Higgs triplet vacuum expectation value -v' in the electroweak precision data preferring ranges. We End that the LH model can give a relatively small, but non-negligible extra weak contribution to the muon anomalous magnetic moment and can reduce the deviation of Delta alpha(mu) from 2.6 sigma for the SM to 2.5 sigma for t he LH model.