Dark Matter in Classically Scale-Invariant Two Singlets Standard Model

TL;DR

This paper proposes a classically scale-invariant extension of the Standard Model with two new scalars, where one becomes dark matter and the other induces electroweak symmetry breaking through quantum effects, stabilizing the Higgs potential.

Contribution

It introduces a novel two-scalar model with classical scale invariance, demonstrating TeV-scale dark matter and Higgs potential stabilization.

Findings

TeV-scale dark matter is achievable regardless of the second scalar's VEV.

Higgs potential stability is improved for Higgs masses over ~120 GeV.

The model links dark matter and electroweak symmetry breaking via quantum corrections.

Abstract

We consider a model where two new scalars are introduced in the standard model, assuming classical scale invariance. In this model the scale invariance is broken by quantum corrections and one of the new scalars acquires non-zero vacuum expectation value (VEV), which induces the electroweak symmetry breaking in the standard model, and the other scalar becomes dark matter. It is shown that TeV scale dark matter is realized, independent of the value of the other scalar's VEV. The impact of the new scalars on the Higgs potential is also discussed. The Higgs potential is stabilized when the Higgs mass is over ~120 GeV.