2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/219688We discuss the properties of light pseudoscalar particles, the so-called pseudoaxions, within Little Higgs models, focusing on their phenomenology at the ILC. We especially discuss a method of how to distinguish between the two basic classes of Little Higgs models, the product and simple group models, by a specific production channel and decay mode. These are strictly forbidden in the product group models.Talk given at the LCWS/ILC 2007 at DESY, HamburgHigh Energy Physics - Phenomenologytext