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Naturalness Implications of LEP Results

We analyse the fine-tuning constraints arising from absence of superpartners at LEP, without strong universality assumptions. We show that such constraints do not imply that charginos or neutralinos should have been seen at LEP, contrary to the usual arguments. They do however imply relatively light...

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Detalles Bibliográficos
Autores principales: Kane, G L, King, S F
Lenguaje:eng
Publicado: 1998
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)00190-2
http://cds.cern.ch/record/368218
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author Kane, G L
King, S F
author_facet Kane, G L
King, S F
author_sort Kane, G L
collection CERN
description We analyse the fine-tuning constraints arising from absence of superpartners at LEP, without strong universality assumptions. We show that such constraints do not imply that charginos or neutralinos should have been seen at LEP, contrary to the usual arguments. They do however imply relatively light gluinos $(m_{\tilde g} \lsim 350 GeV)$ and/or a relation between the soft-breaking SU(3) gaugino mass and Higgs soft mass $m_{H_U}$. The LEP limit on the Higgs mass is significant, especially at low $\tan \beta$, and we investigate to what extent this provides evidence for both a lighter gluino and correlations between soft masses.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
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spelling cern-3682182019-09-30T06:29:59Zdoi:10.1016/S0370-2693(99)00190-2http://cds.cern.ch/record/368218engKane, G LKing, S FNaturalness Implications of LEP ResultsParticle Physics - PhenomenologyWe analyse the fine-tuning constraints arising from absence of superpartners at LEP, without strong universality assumptions. We show that such constraints do not imply that charginos or neutralinos should have been seen at LEP, contrary to the usual arguments. They do however imply relatively light gluinos $(m_{\tilde g} \lsim 350 GeV)$ and/or a relation between the soft-breaking SU(3) gaugino mass and Higgs soft mass $m_{H_U}$. The LEP limit on the Higgs mass is significant, especially at low $\tan \beta$, and we investigate to what extent this provides evidence for both a lighter gluino and correlations between soft masses.hep-ph/9810374SHEP-98-13oai:cds.cern.ch:3682181998-10-16
spellingShingle Particle Physics - Phenomenology
Kane, G L
King, S F
Naturalness Implications of LEP Results
title Naturalness Implications of LEP Results
title_full Naturalness Implications of LEP Results
title_fullStr Naturalness Implications of LEP Results
title_full_unstemmed Naturalness Implications of LEP Results
title_short Naturalness Implications of LEP Results
title_sort naturalness implications of lep results
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(99)00190-2
http://cds.cern.ch/record/368218
work_keys_str_mv AT kanegl naturalnessimplicationsoflepresults
AT kingsf naturalnessimplicationsoflepresults