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Dark matter and a suppression mechanism for neutrino masses in the Higgs triplet model

Dark matter and a suppression mechanism for neutrino masses in the Higgs triplet model

We extend the Higgs triplet model so as to include dark matter candidates and a simple suppression mechanism for the vacuum expectation value (${v}_{\ensuremath{\Delta}}$) of the triplet scalar field. The smallness of neutrino masses can be naturally explained with the suppressed value of ${v}_{\ensuremath{\Delta}}$ even when the triplet fields are …