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We consider the process $\mu \to \nu_{e}e\bar{\nu}_{\mu} $in the framework ofa two Higgs doublet model with flavor changing neutral currents (FCNC). SinceFCNC generates in turn flavor changing charged currents in the lepton sector,this process appears at tree level mediated by a charged Higgs boson exchange.  From the experimental upper limit for this decay, we obtain the bound $|\xi_{\mu e}/m_{H^{\pm}}| \leq 3.8\times 10^{-3}$ where$ \xi_{\mu e} $refers tothe mixing between the first and second lepton generations, and $m_{H^{\pm}}$denotes the mass of the charged Higgs boson. This bound is independent on theother free parameters of the model. In particular, for $m_{H^{\pm}}\simeq100$GeV we get $| \xi_{e\mu}| $ $\lesssim 0.38$Comment: 2 pages, no figure

The process mu -> nue e$\bar{\nu}$mu in the 2HDM with flavor changing neutral currents