2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176498Little Higgs models may provide a solution to the gauge hierarchy problem in the mass of the Higgs boson. In this framework the Higgs boson is arisen as the pseudo-Nambu-Goldstone (PNG) boson. We show that the lepton triplet introduced in a little Higgs model explains a small mass parameter in the double see-saw mechanism for neutrino masses, and it can also gives an explanation for the axion like particle recently reported by PVLAS collaboration.7 pages, no figure; the version to appear in Phys. Rev. DHigh Energy Physics - Phenomenologytext