Production of doubly charged scalars from the decay of a heavy standard-model-like Higgs boson in the Higgs triplet model

The Higgs triplet model (HTM) of neutrino mass generation predicts the existence of doubly charged Higgs bosons (H±±). In the HTM a scalar eigenstate (H2) is dominantly composed of the scalar field from the isospin doublet, and could be significantly heavier than H±±. Such a scenario would allow the possibility of a large branching ratio for the decay H2→H++H--. From the production mechanism of gluon-gluon fusion, gg→H2, the above decay mode would give rise to pair production of doubly charged Higgs bosons (H++H--) with a cross section which could be significantly larger than the cross sections for the standard production mechanisms qq→γ, Z→H++H--, and q'q→W→H±±H±. We discuss the phenomenological consequences for the ongoing searches for H±± at the Tevatron and at the LHC.