A Little Higgs Model with Exact Dark Matter Parity

TL;DR

This paper introduces a modified little Higgs model with an exact dark matter parity that avoids problematic corrections and predicts new TeV-scale particles detectable at the LHC.

Contribution

It presents a novel little Higgs model incorporating an unbroken dark matter parity, compatible with electroweak constraints and including full Standard Model fermion content.

Findings

Model achieves successful electroweak symmetry breaking.

Predicts a rich spectrum of new particles at TeV scale.

Some particles have sizable production cross sections at the LHC.

Abstract

Based on a recent idea by Krohn and Yavin, we construct a little Higgs model with an internal parity that is not broken by anomalous Wess-Zumino-Witten terms. The model is a modification of the "minimal moose" models by Arkani-Hamed et al. and Cheng and Low. The new parity prevents large corrections to oblique electroweak parameters and leads to a viable dark matter candidate. It is shown how the complete Standard Model particle content, including quarks and leptons together with their Yukawa couplings, can be implemented. Successful electroweak symmetry breaking and consistency with electroweak precision constraints is achieved for natural paramters choices. A rich spectrum of new particles is predicted at the TeV scale, some of which have sizable production cross sections and striking decay signatures at the LHC.