On light dilaton extensions of the Standard Model
Eugenio Megias, Oriol Pujolas, Mariano Quiros
TL;DR
This paper explores the theoretical possibility of a light dilaton in extensions of the Standard Model, analyzing its spectrum, experimental constraints, and potential identification with the Higgs boson.
Contribution
It introduces a holographic framework for light dilaton extensions of the Standard Model and evaluates their phenomenological viability.
Findings
Light dilaton spectrum consistent with electroweak constraints
Bounds on dilaton mass from precision tests
Potential identification of the Higgs as a dilaton
Abstract
We discuss the presence of a light dilaton in Conformal Field Theories deformed by a single scalar operator, in the holographic realization consisting of confining Renormalization Group flows. Then, we apply this formalism to study the extension of the Standard Model with a light dilaton in a 5D warped model. We study the spectrum of scalar and vector perturbations, compare the model predictions with Electroweak Precision Tests and find the corresponding bounds for the lightest modes. Finally, we analyze the possibility that the Higgs resonance found at the LHC be a dilaton.
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