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

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 be...

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Main Authors: Kristjan Kannike, Luca Marzola, Martti Raidal, Alessandro Strumia
Format: Article
Language:English
Published: Elsevier 2021-05-01
Series:Physics Letters B
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269321001817
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spelling doaj-74428a9a078c4754b57f94f28d9ae88b2021-03-29T04:09:56ZengElsevierPhysics Letters B0370-26932021-05-01816136241Light Higgs boson from multi-phase criticality in dynamical symmetry breakingKristjan Kannike0Luca Marzola1Martti Raidal2Alessandro Strumia3NICPB, Rävala 10, 10143 Tallinn, Estonia; Corresponding author.NICPB, Rävala 10, 10143 Tallinn, EstoniaNICPB, Rävala 10, 10143 Tallinn, EstoniaUniversità di Pisa, Dipartimento di Fisica, ItalyThe 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.http://www.sciencedirect.com/science/article/pii/S0370269321001817Multi-phase criticalityColeman-WeinbergEffective potentialHiggs bosonPseudo-Goldstone boson
collection DOAJ
language English
format Article
sources DOAJ
author Kristjan Kannike
Luca Marzola
Martti Raidal
Alessandro Strumia
spellingShingle Kristjan Kannike
Luca Marzola
Martti Raidal
Alessandro Strumia
Light Higgs boson from multi-phase criticality in dynamical symmetry breaking
Physics Letters B
Multi-phase criticality
Coleman-Weinberg
Effective potential
Higgs boson
Pseudo-Goldstone boson
author_facet Kristjan Kannike
Luca Marzola
Martti Raidal
Alessandro Strumia
author_sort Kristjan Kannike
title Light Higgs boson from multi-phase criticality in dynamical symmetry breaking
title_short Light Higgs boson from multi-phase criticality in dynamical symmetry breaking
title_full Light Higgs boson from multi-phase criticality in dynamical symmetry breaking
title_fullStr Light Higgs boson from multi-phase criticality in dynamical symmetry breaking
title_full_unstemmed Light Higgs boson from multi-phase criticality in dynamical symmetry breaking
title_sort light higgs boson from multi-phase criticality in dynamical symmetry breaking
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2021-05-01
description 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.
topic Multi-phase criticality
Coleman-Weinberg
Effective potential
Higgs boson
Pseudo-Goldstone boson
url http://www.sciencedirect.com/science/article/pii/S0370269321001817
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AT marttiraidal lighthiggsbosonfrommultiphasecriticalityindynamicalsymmetrybreaking
AT alessandrostrumia lighthiggsbosonfrommultiphasecriticalityindynamicalsymmetrybreaking
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