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Little Higgs models provide a natural explanation of the little hierarchybetween the electroweak scale and a few TeV scale, where new physics isexpected. Under the same inspiring naturalness arguments, this work completes aprevious study on lepton flavor-changing processes in the Littlest Higgs modelwith T-parity exploring the channel that will eventually turn out to be themost sensitive, \mu-e conversion in nuclei. All one-loop contributions arecarefully taken into account, results for the most relevant nuclei are providedand a discussion of the influence of the quark mixing is included. The resultsfor the Ti nucleus are in good agreement with earlier work by Blanke et al.,where a degenerate mirror quark sector was assumed. The conclusion is that,although this particular model reduces the tension with electroweak precisiontests, if the restrictions on the parameter space derived from lepton flavorviolation are taken seriously, the degree of fine tuning necessary to meetthese constraints also disfavors this model.

Muon to electron conversion in the Littlest Higgs model with T-parity