منابع مشابه
Precision Observables in the MSSM: Leading Electroweak Two-loop Corrections
The leading electroweak MSSM two-loop corrections to the ρ-parameter are calculated. They are obtained by evaluating the two-loop self-energies of the Z and the W boson at O(GFmt ) in the limit of heavy scalar quarks. A very compact expression is derived, depending on the ratio of the CPodd Higgs boson mass, MA, and the top quark mass, mt. Expressions for the limiting cases MA ≫ mt and MA ≪ mt ...
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The evaluation of the two-loop MSSM-contributions to the electroweak precision observables MW and sin 2 θeff at O(αt ), O(αtαb), O(α 2 b ) is presented. These contributions enter via ∆ρ, and it is explained in detail how one can retain the true, non-vanishing value of the MSSM Higgs boson mass Mh in spite of using the gauge-less limit in the calculation. The numerical results can be sizeable, i...
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Recent higher-order results for precision observables in the Standard Model (SM) and the Minimal Supersymmetric Standard Model (MSSM) and for the neutral CP-even Higgs-boson masses of the MSSM are summarized. Furthermore a brief discussion of the technical aspects of evaluating higher-order corrections in the electroweak theory is given. In the SM, results for the Higgsmass dependence of the pr...
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We use a newly released version of the SuperBayeS code to analyze the impact of the choice of priors and the influence of various constraints on the statistical conclusions for the preferred values of the parameters of the Constrained MSSM. We assess the effect in a Bayesian framework and compare it with an alternative likelihood-based measure of a profile likelihood. We employ a new scanning a...
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Higher-order results for electroweak precision observables in the Standard Model are analyzed in view of the experimental accuracies achievable at the present and the next generation of colliders, and the indirect prediction of the Higgs-boson mass from the precision data is discussed. Within the MSSM, two-loop results for the lightest CP-even Higgs-boson mass are confronted with the exclusion ...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2008
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2008/04/039