Light Higgs boson from multi-phase criticality in dynamical symmetry breaking

Abstract

The Coleman-Weinberg mechanism can realise different phases of dynamical symmetry breaking. In each phase a combination of scalars, corresponding to the pseudo-Goldstone boson of scale invariance, has a loop-suppressed mass. We show that additional scalars, beyond the pseudo-Goldstone bosons, can become light at critical points in the parameter space where two different phases co-exist. We present a minimal implementation of the mechanism in multi-scalar models, detailing how loop-suppressed masses and mixings can be computed. We discuss realisations of the resulting multi-phase criticality principle and its relevance to the case of the Higgs boson.

arXiv comment10 pages, 2 figures, version accepted in PLB

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Cited by in corpus (6)

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• Grand unification and the Planck scale: An $SO(10)$ example of radiative symmetry breaking
• Dark Matter-Induced Multi-Phase Dynamical Symmetry Breaking
• Multi-phase critical Higgs boson at colliders
• Improved effective potential of Gildener-Weinberg models
• Grand Unified Origin of Enhanced Scalar Couplings: Connecting Radiative Electroweak Symmetry Breaking to SO(10) Dynamics