Decoupling of supersymmetric particles

The possibility of a heavy supersymmetric spectrum at the Minimal Supersymmetric Standard Model is considered and the decoupling from the low energy electroweak scale is analyzed in detail. The formal proof of decoupling of supersymmetric particles from low energy physics is stated in terms of the e...

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Detalhes bibliográficos
Autores: Dobado González, Antonio, Herrero, M. J., Peñaranda, S.
Formato: artículo
Fecha de publicación:1999
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/58725
Acesso em linha:https://hdl.handle.net/20.500.14352/58725
Access Level:acceso abierto
Palavra-chave:53
Ultra Heavy Fermions
Higgs Bosons
Weak Interactions
N=1 Supergravity
Standard Model
One-Loop
Mssm
Mass
Spectrum
Renormalization
Física (Física)
22 Física
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oai_identifier_str oai:docta.ucm.es:20.500.14352/58725
network_acronym_str ES
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repository_id_str
spelling Decoupling of supersymmetric particlesDobado González, AntonioHerrero, M. J.Peñaranda, S.53Ultra Heavy FermionsHiggs BosonsWeak InteractionsN=1 SupergravityStandard ModelOne-LoopMssmMassSpectrumRenormalizationFísica (Física)22 FísicaThe possibility of a heavy supersymmetric spectrum at the Minimal Supersymmetric Standard Model is considered and the decoupling from the low energy electroweak scale is analyzed in detail. The formal proof of decoupling of supersymmetric particles from low energy physics is stated in terms of the effective action for the particles of the Standard Model that results by integrating out all the sparticles in the limit where their masses are larger than the electroweak scale. The computation of the effective action for the standard electroweak gauge bosons W+/-, Z and gamma is performed by integrating out all the squarks, sleptons, charginos and neutralinos to one-loop. The Higgs sector is not considered in this paper. The large sparticle masses limit is also analyzed in detail. Explicit analytical formulae for the two-point functions of the electroweak gauge bosons to be Valid in that limit are presented. Finally, the decoupling of sparticles in the S, T and U parameters is studied analitically. A discussion on how the decoupling takes place in terms of both the physical sparticle masses and the not-physical mass parameters as the mu-parameter and the soft-breaking parameters is included.Springer VerlagUniversidad Complutense de Madrid19991999-02-0119991999-02-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://hdl.handle.net/20.500.14352/58725reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/587252026-06-02T12:44:21Z
dc.title.none.fl_str_mv Decoupling of supersymmetric particles
title Decoupling of supersymmetric particles
spellingShingle Decoupling of supersymmetric particles
Dobado González, Antonio
53
Ultra Heavy Fermions
Higgs Bosons
Weak Interactions
N=1 Supergravity
Standard Model
One-Loop
Mssm
Mass
Spectrum
Renormalization
Física (Física)
22 Física
title_short Decoupling of supersymmetric particles
title_full Decoupling of supersymmetric particles
title_fullStr Decoupling of supersymmetric particles
title_full_unstemmed Decoupling of supersymmetric particles
title_sort Decoupling of supersymmetric particles
dc.creator.none.fl_str_mv Dobado González, Antonio
Herrero, M. J.
Peñaranda, S.
author Dobado González, Antonio
author_facet Dobado González, Antonio
Herrero, M. J.
Peñaranda, S.
author_role author
author2 Herrero, M. J.
Peñaranda, S.
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
Ultra Heavy Fermions
Higgs Bosons
Weak Interactions
N=1 Supergravity
Standard Model
One-Loop
Mssm
Mass
Spectrum
Renormalization
Física (Física)
22 Física
topic 53
Ultra Heavy Fermions
Higgs Bosons
Weak Interactions
N=1 Supergravity
Standard Model
One-Loop
Mssm
Mass
Spectrum
Renormalization
Física (Física)
22 Física
description The possibility of a heavy supersymmetric spectrum at the Minimal Supersymmetric Standard Model is considered and the decoupling from the low energy electroweak scale is analyzed in detail. The formal proof of decoupling of supersymmetric particles from low energy physics is stated in terms of the effective action for the particles of the Standard Model that results by integrating out all the sparticles in the limit where their masses are larger than the electroweak scale. The computation of the effective action for the standard electroweak gauge bosons W+/-, Z and gamma is performed by integrating out all the squarks, sleptons, charginos and neutralinos to one-loop. The Higgs sector is not considered in this paper. The large sparticle masses limit is also analyzed in detail. Explicit analytical formulae for the two-point functions of the electroweak gauge bosons to be Valid in that limit are presented. Finally, the decoupling of sparticles in the S, T and U parameters is studied analitically. A discussion on how the decoupling takes place in terms of both the physical sparticle masses and the not-physical mass parameters as the mu-parameter and the soft-breaking parameters is included.
publishDate 1999
dc.date.none.fl_str_mv 1999
1999-02-01
1999
1999-02-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/58725
url https://hdl.handle.net/20.500.14352/58725
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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