Conformal symmetry and the Standard Model |
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Authors: | Krzysztof A Meissner Hermann Nicolai |
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Institution: | 1. Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Mühlenberg 1, D-14476 Potsdam, Germany;2. Institute of Theoretical Physics, Warsaw University, Ho?a 69, 00-681 Warsaw, Poland |
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Abstract: | 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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