Technicolor with Scalar Doublet After the Discovery of Higgs Boson

TL;DR

This paper explores a technicolor model with a scalar doublet and colored scalars, which remains consistent with experimental data and offers potential signals at the LHC following the Higgs discovery.

Contribution

It introduces a low-energy effective technicolor model incorporating a scalar doublet and colored scalars, aligning with Higgs data and electroweak constraints.

Findings

Model is consistent with current experimental limits.

Colored scalars provide negative contributions to the S parameter.

Potential detection of techni-pions and colored scalars at the LHC.

Abstract

The SM-like Higgs boson with mass of 125 GeV discovered at the LHC is subject to a natural interpretation of electroweak symmetry breaking. As a successful theory in offering this naturalness, technicolor with a scalar doublet and two both $SU(3)_c$ and $SU(N_{TC})$ colored scalars, which is considered as a low-energy effective theory, is proposed after the discovery of SM-like Higgs boson. At present status, the model can be consistent with both the direct and indirect experimental limits. In particular, the consistency with precision electroweak measurements is realized by the colored scalars, which give rise to a large {\it negative} contribution to $S$ parameter. It is also promising to detect techni-pions and these colored scalars at the LHC.