The minimal supersymmetric standard model and electroweak precision data
نویسندگان
چکیده
منابع مشابه
Electroweak Precision Measurements and the Minimal Supersymmetric Standard Model
We discuss supersymmetric contributions to the electroweak precision measurements in the Minimal Supersymmetric Standard Model for two cases: the quark-lepton universality violation δq` in charged currents and the ratio Rb = Γ (Z → bb̄)/Γ (Z → hadrons). The recent experimental data suggest deviations from the Standard Model for these observables, at the 1-σ level for the former and at more than ...
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The current status of electroweak precision observables in the Minimal Supersymmetric Standard Model (MSSM) is reviewed. We focus in particular on the W boson mass, M W , the effective leptonic weak mixing angle, sin 2 θ eff , the anomalous magnetic moment of the muon, (g − 2) µ , and the lightest CP-even MSSM Higgs boson mass, m h. We summarize the current experimental situation and the status...
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In principle, the baryon asymmetry of the Universe can be generated at the electroweak phase transition but the experimental lower limit on the Higgs mass seems to rule out a Standard Model scenario. However, it has been shown recently that in the Minimal Supersymmetric Standard Model, the electroweak phase transition can be a strong enough first order one for baryogenesis if the mass of one to...
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Severe constraints on parameters of the minimal supersymmetric standard model follow from a dynamical electroweak symmetry breaking mechanism dominated by top and stop loops. In particular, the lightest Higgs boson mass is expected to be smaller than 100 GeV. Research Institute for High Energy Physics, P.O. Box 9 (Siltavuorenpenger 20 C) FIN-00014, University of Helsinki, Finland Laboratory of ...
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We compute the baryon asymmetry generated at the electroweak phase transition by the Higgs scalar sector of the minimal supersymmetric standard model. Because of large enhancement effects from low momentum modes, Higgs particles may be responsible for the observed baryon asymmetry even though CP-violation in the Higgs sector only appears at the one-loop level. We also discuss the approximations...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1993
ISSN: 0370-2693
DOI: 10.1016/0370-2693(93)91249-m