Conformal Symmetry and the Standard Model

Details Conformal Symmetry and the Standard Model Conformal Symmetry and the Standard Model

2006-12-15

arxiv.org/abs/hep-th/0612165v4

Phys.Lett.B648:312-317,2007

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 6 figures, version to be published in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2007.03.023

We re-examine the question of radiative symmetry breaking in the standard model in the presence of right-chiral neutrinos and a minimally enlarged scalar sector. We demonstrate that, with these extra ingredients, the hypothesis of classically unbroken conformal symmetry, besides naturally introducing and stabilizing a hierarchy, is compatible with all available data; in particular, there exists a set of parameters for which the model may remain viable even up to the Planck scale. The decay modes of the extra scalar field provide a unique signature of this model which can be tested at LHC.

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