Supersymmetry and precision data after LEP2

We study one loop supersymmetric corrections to precision observables. Adding LEP2 e ebar --> f fbar cross sections to the data-set removes previous hints for SUSY and the resulting constraints are in some cases stronger than direct bounds on sparticle masses. We consider specific models: split S...

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Detalles Bibliográficos
Autores principales: Marandella, G, Schappacher, C, Strumia, A
Lenguaje:eng
Publicado: 2005
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysb.2005.03.001
http://cds.cern.ch/record/821741
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author Marandella, G
Schappacher, C
Strumia, A
author_facet Marandella, G
Schappacher, C
Strumia, A
author_sort Marandella, G
collection CERN
description We study one loop supersymmetric corrections to precision observables. Adding LEP2 e ebar --> f fbar cross sections to the data-set removes previous hints for SUSY and the resulting constraints are in some cases stronger than direct bounds on sparticle masses. We consider specific models: split SUSY, CMSSM, gauge mediation, anomaly and radion mediation. Beyond performing a complete one-loop analysis, we also develop a simple approximation, based on the Shat, That, W, Y `universal' parameters. SUSY corrections give W,Y > 0 and mainly depend on the left-handed slepton and squark masses, on M_2 and on mu.
id cern-821741
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
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spelling cern-8217412019-09-30T06:29:59Zdoi:10.1016/j.nuclphysb.2005.03.001http://cds.cern.ch/record/821741engMarandella, GSchappacher, CStrumia, ASupersymmetry and precision data after LEP2Particle Physics - PhenomenologyWe study one loop supersymmetric corrections to precision observables. Adding LEP2 e ebar --> f fbar cross sections to the data-set removes previous hints for SUSY and the resulting constraints are in some cases stronger than direct bounds on sparticle masses. We consider specific models: split SUSY, CMSSM, gauge mediation, anomaly and radion mediation. Beyond performing a complete one-loop analysis, we also develop a simple approximation, based on the Shat, That, W, Y `universal' parameters. SUSY corrections give W,Y > 0 and mainly depend on the left-handed slepton and squark masses, on M_2 and on mu.hep-ph/0502095oai:cds.cern.ch:8217412005-02-10
spellingShingle Particle Physics - Phenomenology
Marandella, G
Schappacher, C
Strumia, A
Supersymmetry and precision data after LEP2
title Supersymmetry and precision data after LEP2
title_full Supersymmetry and precision data after LEP2
title_fullStr Supersymmetry and precision data after LEP2
title_full_unstemmed Supersymmetry and precision data after LEP2
title_short Supersymmetry and precision data after LEP2
title_sort supersymmetry and precision data after lep2
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.nuclphysb.2005.03.001
http://cds.cern.ch/record/821741
work_keys_str_mv AT marandellag supersymmetryandprecisiondataafterlep2
AT schappacherc supersymmetryandprecisiondataafterlep2
AT strumiaa supersymmetryandprecisiondataafterlep2

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