Two-loop stability of a complex singlet extended standard model
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.21/6055 |
Resumo: | Motivated by the dark matter and the baryon asymmetry problems, we analyze a complex singlet extension of the Standard Model with a Z(2) symmetry (which provides a dark matter candidate). After a detailed two-loop calculation of the renormalization group equations for the new scalar sector, we study the radiative stability of the model up to a high energy scale (with the constraint that the 126 GeV Higgs boson found at the LHC is in the spectrum) and find it requires the existence of a new scalar state mixing with the Higgs with a mass larger than 140 GeV. This bound is not very sensitive to the cutoff scale as long as the latter is larger than 10(10) GeV. We then include all experimental and observational constraints/measurements from collider data, from dark matter direct detection experiments, and from the Planck satellite and in addition force stability at least up to the grand unified theory scale, to find that the lower bound is raised to about 170 GeV, while the dark matter particle must be heavier than about 50 GeV. |
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Two-loop stability of a complex singlet extended standard modelHiggs PhysicsBeyond Standard ModelRenormalization GroupMotivated by the dark matter and the baryon asymmetry problems, we analyze a complex singlet extension of the Standard Model with a Z(2) symmetry (which provides a dark matter candidate). After a detailed two-loop calculation of the renormalization group equations for the new scalar sector, we study the radiative stability of the model up to a high energy scale (with the constraint that the 126 GeV Higgs boson found at the LHC is in the spectrum) and find it requires the existence of a new scalar state mixing with the Higgs with a mass larger than 140 GeV. This bound is not very sensitive to the cutoff scale as long as the latter is larger than 10(10) GeV. We then include all experimental and observational constraints/measurements from collider data, from dark matter direct detection experiments, and from the Planck satellite and in addition force stability at least up to the grand unified theory scale, to find that the lower bound is raised to about 170 GeV, while the dark matter particle must be heavier than about 50 GeV.AMER PHYSICAL SOCRCIPLCosta, RaulMorais, Antonio P.Sampaio, Marco O. P.Santos, Rui2016-04-20T10:55:32Z2015-07-162015-07-16T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/6055engCOSTA, Raul; [et al.] - Two-loop stability of a complex singlet extended standard model. Physical Review. D. ISSN. 1550-7998. Vol. 92, N.º 2 (2015), pp. 1-441550-799810.1103/PhysRevD.92.025024metadata 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:RCAAP2023-08-03T09:50:21Zoai:repositorio.ipl.pt:10400.21/6055Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:15:15.808812Repositório 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 |
Two-loop stability of a complex singlet extended standard model |
title |
Two-loop stability of a complex singlet extended standard model |
spellingShingle |
Two-loop stability of a complex singlet extended standard model Costa, Raul Higgs Physics Beyond Standard Model Renormalization Group |
title_short |
Two-loop stability of a complex singlet extended standard model |
title_full |
Two-loop stability of a complex singlet extended standard model |
title_fullStr |
Two-loop stability of a complex singlet extended standard model |
title_full_unstemmed |
Two-loop stability of a complex singlet extended standard model |
title_sort |
Two-loop stability of a complex singlet extended standard model |
author |
Costa, Raul |
author_facet |
Costa, Raul Morais, Antonio P. Sampaio, Marco O. P. Santos, Rui |
author_role |
author |
author2 |
Morais, Antonio P. Sampaio, Marco O. P. Santos, Rui |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Costa, Raul Morais, Antonio P. Sampaio, Marco O. P. Santos, Rui |
dc.subject.por.fl_str_mv |
Higgs Physics Beyond Standard Model Renormalization Group |
topic |
Higgs Physics Beyond Standard Model Renormalization Group |
description |
Motivated by the dark matter and the baryon asymmetry problems, we analyze a complex singlet extension of the Standard Model with a Z(2) symmetry (which provides a dark matter candidate). After a detailed two-loop calculation of the renormalization group equations for the new scalar sector, we study the radiative stability of the model up to a high energy scale (with the constraint that the 126 GeV Higgs boson found at the LHC is in the spectrum) and find it requires the existence of a new scalar state mixing with the Higgs with a mass larger than 140 GeV. This bound is not very sensitive to the cutoff scale as long as the latter is larger than 10(10) GeV. We then include all experimental and observational constraints/measurements from collider data, from dark matter direct detection experiments, and from the Planck satellite and in addition force stability at least up to the grand unified theory scale, to find that the lower bound is raised to about 170 GeV, while the dark matter particle must be heavier than about 50 GeV. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-16 2015-07-16T00:00:00Z 2016-04-20T10:55:32Z |
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/10400.21/6055 |
url |
http://hdl.handle.net/10400.21/6055 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
COSTA, Raul; [et al.] - Two-loop stability of a complex singlet extended standard model. Physical Review. D. ISSN. 1550-7998. Vol. 92, N.º 2 (2015), pp. 1-44 1550-7998 10.1103/PhysRevD.92.025024 |
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 |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
AMER PHYSICAL SOC |
publisher.none.fl_str_mv |
AMER PHYSICAL SOC |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133410896117760 |