Electroweak vacuum lifetime in two Higgs doublet models

Detalhes bibliográficos
Autor(a) principal: Branchina, V.
Data de Publicação: 2018
Outros Autores: Contino, F., Ferreira, Pedro Miguel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/9346
Resumo: We study the stability of neutral electroweak vacua in two Higgs doublet models, and calculate the lifetime of these states when the parameters are such that they are false vacua. As the two Higgs doublet model is invariant under a sign change of both doublets, degenerate true vacua exist. It is shown that this degeneracy, despite the fact that each of these minima locally describes the same physics, can immensely affect their lifetime. We apply these calculations to the parameter space of the models which is allowed by recent LHC searches, and infer combinations of parameters which should be excluded on grounds of a tunneling time inferior to the age of the universe.
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spelling Electroweak vacuum lifetime in two Higgs doublet modelsBeyond Standard ModelHiggs PhysicsWe study the stability of neutral electroweak vacua in two Higgs doublet models, and calculate the lifetime of these states when the parameters are such that they are false vacua. As the two Higgs doublet model is invariant under a sign change of both doublets, degenerate true vacua exist. It is shown that this degeneracy, despite the fact that each of these minima locally describes the same physics, can immensely affect their lifetime. We apply these calculations to the parameter space of the models which is allowed by recent LHC searches, and infer combinations of parameters which should be excluded on grounds of a tunneling time inferior to the age of the universe.SpringerRCIPLBranchina, V.Contino, F.Ferreira, Pedro Miguel2019-01-18T11:05:35Z2018-11-192018-11-19T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/9346engBRANCHINA, V.; CONTINO, F.; FERREIRA, P. M. – Electroweak vacuum lifetime in two Higgs doublet models. Journal of High Energy Physics. ISSN 1029-8479. N.º 11 (2018), pp. 1-371029-847910.1007/JHEP11(2018)107metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:57:55Zoai:repositorio.ipl.pt:10400.21/9346Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:17:56.158127Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Electroweak vacuum lifetime in two Higgs doublet models
title Electroweak vacuum lifetime in two Higgs doublet models
spellingShingle Electroweak vacuum lifetime in two Higgs doublet models
Branchina, V.
Beyond Standard Model
Higgs Physics
title_short Electroweak vacuum lifetime in two Higgs doublet models
title_full Electroweak vacuum lifetime in two Higgs doublet models
title_fullStr Electroweak vacuum lifetime in two Higgs doublet models
title_full_unstemmed Electroweak vacuum lifetime in two Higgs doublet models
title_sort Electroweak vacuum lifetime in two Higgs doublet models
author Branchina, V.
author_facet Branchina, V.
Contino, F.
Ferreira, Pedro Miguel
author_role author
author2 Contino, F.
Ferreira, Pedro Miguel
author2_role author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Branchina, V.
Contino, F.
Ferreira, Pedro Miguel
dc.subject.por.fl_str_mv Beyond Standard Model
Higgs Physics
topic Beyond Standard Model
Higgs Physics
description We study the stability of neutral electroweak vacua in two Higgs doublet models, and calculate the lifetime of these states when the parameters are such that they are false vacua. As the two Higgs doublet model is invariant under a sign change of both doublets, degenerate true vacua exist. It is shown that this degeneracy, despite the fact that each of these minima locally describes the same physics, can immensely affect their lifetime. We apply these calculations to the parameter space of the models which is allowed by recent LHC searches, and infer combinations of parameters which should be excluded on grounds of a tunneling time inferior to the age of the universe.
publishDate 2018
dc.date.none.fl_str_mv 2018-11-19
2018-11-19T00:00:00Z
2019-01-18T11:05:35Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.21/9346
url http://hdl.handle.net/10400.21/9346
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv BRANCHINA, V.; CONTINO, F.; FERREIRA, P. M. – Electroweak vacuum lifetime in two Higgs doublet models. Journal of High Energy Physics. ISSN 1029-8479. N.º 11 (2018), pp. 1-37
1029-8479
10.1007/JHEP11(2018)107
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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