Non-perturbative electroweak-scalegenesis on the test bench of dark matter detection

TL;DR

This paper explores a scale-invariant extension of the standard model where a hidden sector dynamically breaks scale symmetry, leading to electroweak symmetry breaking and a potential dark matter candidate that can be tested by future detection experiments.

Contribution

It introduces a modified model without assuming $U(N_f)$ flavor symmetry, revealing new dark matter annihilation processes relevant for experimental detection.

Findings

The model satisfies future dark matter detection constraints.

A new dark matter annihilation process is identified.

The scale invariance breaking mechanism is confirmed as viable.

Abstract

We revisit a recently proposed scale invariant extension of the standard model, in which the scalar bi-linear condensate in a strongly interacting hidden sector dynamically breaks scale symmetry, thereby triggering electroweak symmetry breaking. Relaxing the previously made assumption on $U(N_f)$ flavor symmetry we find that the presence of the would-be dark matter candidate opens a new annihilation process of dark matter at finite temperature, such that the model can satisfy stringent constraints of the future experiments of the dark matter direct detection.