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Doubly charged Higgs bosons, H^{\pm\pm}, are being searched for in theTevatron experiments. The most recent search by the D0 collaboration seeksthree muons (mu^\pm\mu^\pm\mu^\mp), which are assumed to originate from thepair-production process, q\overline q\to H^{++}H^{--}, followed by the decayH^{\pm\pm} \to \mu^\pm \mu^\pm. In this three-lepton (3l) channel there are sixdistinct signatures for l=e or \mu. In the context of the Higgs Triplet Model,we quantify the dependence of the event numbers for the 3l channels on theparameters of the neutrino mass matrix. It is also shown that the inclusion ofthe production mechanism q \overline{q'} \to H^{\pm\pm}H^{\mp}, followed by thedecay H^\pm\to l^ \pm\nu, would significantly increase the discovery potentialin these channels. We then provide perspectives on the production of thesechannels at the Tevatron and LHC.

Doubly charged Higgs bosons and three-lepton signatures in the Higgs Triplet Model