Top-seesaw assisted technicolor model and a $m=126$ GeV scalar

TL;DR

This paper proposes a technicolor-based model with top-seesaw and topcolor mechanisms, resulting in a three Higgs doublet effective theory that can explain a 126 GeV scalar and predicts higher spin states affecting Higgs decays.

Contribution

It introduces a novel strong dynamics model combining technicolor, top-seesaw, and topcolor, with a detailed analysis of its phenomenological implications and constraints.

Findings

The model can produce a 126 GeV scalar consistent with experimental data.

Higher spin composite states are predicted to influence Higgs decay channels.

The paper outlines strategies to constrain the model using current collider data.

Abstract

We consider a model of strong dynamics able to account for the origin of the electroweak symmetry breaking and heavy quark masses. The model is based on a technicolor sector, augmented with topcolor and top-seesaw mechanism to assist in the generation of heavy quark masses. The low energy effective theory is a particular three Higgs doublet model. The additional feature is the possibility of the existence of composite higher spin states beyond the scalars, which are shown to be essential in this model to provide extra contributions in the higgs decays into two photons. We provide a detailed strategy and analysis how this type of models are to be constrained with the present data.