Consequences of T-parity breaking in the Littlest Higgs model

Abstract

In this paper we consider the effects of the T-parity violating anomalous Wess-Zumino-Witten term in the Littlest Higgs model. Apart from tree level processes, the loop induced decays of the heavy mirror particles into light standard model fermions lead to a new and rich phenomenology in particular at breaking scales f below 1 TeV. Various processes are calculated and their signatures at present and future colliders are discussed. As a byproduct we find an alternative production mechanism for the Higgs boson. © 2008 SISSA.