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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2021-05-01
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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 |
work_keys_str_mv |
AT kristjankannike lighthiggsbosonfrommultiphasecriticalityindynamicalsymmetrybreaking AT lucamarzola lighthiggsbosonfrommultiphasecriticalityindynamicalsymmetrybreaking AT marttiraidal lighthiggsbosonfrommultiphasecriticalityindynamicalsymmetrybreaking AT alessandrostrumia lighthiggsbosonfrommultiphasecriticalityindynamicalsymmetrybreaking |
_version_ |
1724199182980349952 |