  Lepton flavor violating processes such as \mu \to 3e and \mu \to e \gamma are
investigated with supersymmetric Higgs triplet pair \Delta and \bar \Delta in
the light of neutrino masses and experimentally verifiable leptogenesis. The
Higgs triplet mass M_\Delta is expected to be in the range of 1 - 100 TeV. The
branching ratios of these charged lepton decays are evaluated in terms of
M_\Delta and the coupling f L \Delta L of Higgs triplet \Delta with lepton
doublet pairs L L, which is proportional to the neutrino mass matrix. They may
be reached in the future collider experiments. In particular, the \mu \to 3e
decay would be observed indicating the existence of Higgs triplets with
M_\Delta \sim 1 - 100 TeV for | f | \sim 0.1 - 1, while the \mu \to e \gamma
decay can be significant irrespective of M_\Delta in the supersymmetric model
due to the flavor violation in the slepton mass matrices induced by the
renormalization effects.
