Natural Stabilization of the Higgs Boson's Mass and Alignment

TL;DR

This paper proposes that the 125 GeV Higgs boson is a pseudo-Goldstone dilaton arising from scale symmetry breaking, providing a natural explanation for its low mass and alignment, and predicts additional Higgs bosons near 200-550 GeV.

Contribution

It introduces a model where the Higgs is a pseudo-Goldstone dilaton from scale symmetry breaking, explaining its properties and predicting new Higgs states.

Findings

Model consistent with current collider data

Predicts additional Higgs bosons around 200-550 GeV

Provides testable predictions for Run 3 of the LHC

Abstract

Current data from the LHC indicate that the 125 GeV Higgs boson, $H$, is either the single Higgs of the Standard Model or, to a good approximation, an "aligned Higgs". We propose that $H$ is the pseudo-Goldstone dilaton of Gildener and Weinberg. Models based on their mechanism of scale symmetry breaking can naturally account for the Higgs boson's low mass and aligned couplings. We conjecture that they are the only way to achieve a "Higgslike dilaton" that is actually the Higgs boson. These models further imply the existence of additional Higgs bosons in the vicinity of 200 to about 550 GeV. We illustrate our proposal in a version of the two-Higgs-doublet model of Lee and Pilaftsis. Our version of this model is consistent with published precision electroweak and collider physics data. We describe tests to confirm, or exclude, this model at Run 3 of the LHC.