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Supersymmetric dark matter and constraints from LEP

Accelerator constraints on the parameter space of the minimal supersymmetric extension of the standard model are analyzed and contrasted with the parameter space yielding dark matter which is allowed by the cosmological constraints on the relic density. The most important accelerator limits are thos...

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Autor principal: Olive, Keith A
Lenguaje:eng
Publicado: 2000
Materias:
Acceso en línea:http://cds.cern.ch/record/472958
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author Olive, Keith A
author_facet Olive, Keith A
author_sort Olive, Keith A
collection CERN
description Accelerator constraints on the parameter space of the minimal supersymmetric extension of the standard model are analyzed and contrasted with the parameter space yielding dark matter which is allowed by the cosmological constraints on the relic density. The most important accelerator limits are those from searches for charginos chi /sup +or-/ neutralinos chi /sub 2/ and Higgs bosons at LEP. Constraints derived from b to s gamma decay are also incorporated. It is found that m/sub chi / > 51 GeV and tan beta > 2.7 if all soft supersymmetry-breaking scalar masses are universal, including those of the Higgs bosons, and that these limits weaken to, m/sub chi / > 47 Ge V and tan beta > 2.1 if non-universal scalar masses are allowed.
id cern-472958
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
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spelling cern-4729582019-09-30T06:29:59Zhttp://cds.cern.ch/record/472958engOlive, Keith ASupersymmetric dark matter and constraints from LEPParticle Physics - PhenomenologyAccelerator constraints on the parameter space of the minimal supersymmetric extension of the standard model are analyzed and contrasted with the parameter space yielding dark matter which is allowed by the cosmological constraints on the relic density. The most important accelerator limits are those from searches for charginos chi /sup +or-/ neutralinos chi /sub 2/ and Higgs bosons at LEP. Constraints derived from b to s gamma decay are also incorporated. It is found that m/sub chi / > 51 GeV and tan beta > 2.7 if all soft supersymmetry-breaking scalar masses are universal, including those of the Higgs bosons, and that these limits weaken to, m/sub chi / > 47 Ge V and tan beta > 2.1 if non-universal scalar masses are allowed.CERN-TH-2000-286TPI-MINN-2000-43UMN-TH-1919oai:cds.cern.ch:4729582000
spellingShingle Particle Physics - Phenomenology
Olive, Keith A
Supersymmetric dark matter and constraints from LEP
title Supersymmetric dark matter and constraints from LEP
title_full Supersymmetric dark matter and constraints from LEP
title_fullStr Supersymmetric dark matter and constraints from LEP
title_full_unstemmed Supersymmetric dark matter and constraints from LEP
title_short Supersymmetric dark matter and constraints from LEP
title_sort supersymmetric dark matter and constraints from lep
topic Particle Physics - Phenomenology
url http://cds.cern.ch/record/472958
work_keys_str_mv AT olivekeitha supersymmetricdarkmatterandconstraintsfromlep