Consequences of T-parity breaking in the Littlest Higgs model

TL;DR

This paper explores how T-parity violation affects the phenomenology of the Littlest Higgs model, revealing new decay channels and production mechanisms for particles, especially at breaking scales below 1 TeV, with implications for collider experiments.

Contribution

It introduces the effects of T-parity breaking via the Wess-Zumino-Witten term and analyzes resulting decay processes and collider signatures in the Littlest Higgs model.

Findings

Loop-induced decays of heavy mirror particles into SM fermions are significant.

T-parity breaking leads to new collider signatures and decay channels.

An alternative Higgs production mechanism is identified.

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.