The Fine-Tuning Problem in Little Higgs Models

Details The Fine-Tuning Problem in Little Higgs Models The Fine-Tuning Problem in Little Higgs Models

2005-05-09

arxiv.org/abs/hep-ph/0505063v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 2 figures. Talk given at the XXXXth Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile

Scientific paper

Little Higgs models represent an alternative to Supersymmetry as a solution to the Hierarchy Problem. After introducing the main physical ideas of these models, we present the fine-tuning associated to the electroweak breaking in Little Higgs scenarios. Taking into account the most general properties of this scenarios and focusing on two representative ``Little Higgs'' models, we find that the fine-tuning is much higher than suggested by the rough estimates usually made. The main sources that increase the fine-tuning in these models are identified, then they can be taken into account in order to construct a successful model.

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