Purely Radiative Higgs Mass in Scale invariant models

TL;DR

This paper explores scale invariant extensions of the Standard Model where the Higgs mass arises purely from radiative corrections, showing compatibility with experimental data and potential modifications in di-Higgs signals.

Contribution

It demonstrates that radiative corrections can generate the Higgs mass in scale invariant models without a dilaton, aligning scalar properties with experimental observations.

Findings

Radiative corrections can trigger scalar mixing consistent with measurements.

The SI-scotogenic model is viable under current constraints.

Potential modifications to di-Higgs signatures are predicted.

Abstract

In this work, we investigate the possibility of having scale invariant (SI) standard model (SM) extensions, where the light CP-even scalar matches the SM-like Higgs instead of being a light dilaton. After deriving the required conditions for this scenario, we show that the radiative corrections that give rise to the Higgs mass can trigger the scalar mixing to the experimentally allowed values. In addition, we discuss the constraints on the parameters space that makes the CP-even scalars properties in a good agreement with all the recent ATLAS and CMS measurements. We illustrate this scenario by considering the SI-scotogenic model as an example, while imposing all the theoretical and experimental constraints. We show that the model is viable and leads to possible modifications of the di-Higgs signatures at current/future with respect to the SM.