Doubly charged Higgs bosons and lepton-number-violating processes

The discovery of doubly charged Higgs bosons may signal violation of lepton flavor by two units ($\Delta L=2\mathrm{}$) in various processes. Although somewhat exotic for the usual $\mathrm{SU}{\mathrm{}\left(2\right)\mathrm{}}_L\otimes \mathrm{U}\mathrm{}\left(1\right)\mathrm{}$ model, such Higgs bosons do occur naturally associated with Majorana neutrinos in left-right-symmetric models with low right-handed mass scales. We examine the properties of such exotic Higgs bosons and the corresponding $\Delta L=2\mathrm{}$ reactions within a recently proposed model of this kind. Such exotic bosons could be produced at the next round of new accelerators with significant cross sections.