h -> mu tau at hadron colliders

We study the observability for a lepton flavor-changing decay of a Higgs bo son h --> mu tau at hadron colliders. Flavor-changing couplings of a Higgs boson exist at tree level in models with multiple Higgs doublets. The h mu tau coupling is particularly motivated by the favorable interpretation of n u (mu)-nu (tau) oscillation. We find that at the Tevatron run II the unique mu tau signature could serve as the Higgs discovery channel, surpassing ex pectations for Higgs boson searches in the Sh? and in a large parameter reg ion of the MSSM. The sensitivity will he greatly improved at the LHC, beyon d the coverage at a muon collider Higgs factory.