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We analyse the phenomenological viability of heterotic Z(3) orbifolds withtwo Wilson lines, which naturally predict three supersymmetric families ofmatter and Higgs fields. Given that these models can accommodate realisticscenarios for the quark sector avoiding potentially dangerous flavour-changingneutral currents, we now address the leptonic sector, finding that viableorbifold configurations can in principle be obtained. In particular,it ispossible to accomodate present data on charged lepton masses, while avoidingconflict with lepton flavour-violating decays. Concerning the generation ofneutrino masses and mixings, we find that Z(3) orbifolds offer severalinteresting possibilities.

Lepton masses and mixings in orbifold models with three Higgs families