Anomalies in Fermionic UV Completions of Little Higgs Models

Details Anomalies in Fermionic UV Completions of Little Higgs Models Anomalies in Fermionic UV Completions of Little Higgs Models

2008-03-30

arxiv.org/abs/0803.4202v2

JHEP 0806:092,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Sign error corrected and as a result some of the conclusions were revisited

Scientific paper

10.1088/1126-6708/2008/06/092

We consider fermionic UV completions of little Higgs models and their associated T-parity violating anomalous vertices. In particular, we investigate strategies to avoid such parity-violating anomalies. We show that it is unlikely a QCD-like UV completion could be used to implement a model with anomaly-free global symmetry groups. This is because the vacuum state is unlikely to achieve the necessary alignment. However, we will see that certain multi-link moose models, although anomalous, possess a modified form of T-parity that leads to a stable particle. Finally, we briefly discuss a discriminant for detecting anomalous decays at colliders.

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