The topic of this thesis is the calculation of electroweak precision observables including quantum corrections up to the two-loop order in extensions of the Standard Model by an additional scalar doublet. These Two-Higgs-Doublet Models contain in general many additional free parameters. The loop corrections to precision observables incorporate also non-standard contributions from the extended Higgs-sector, in addition to the already known contributions of the Standard Model. The comparison of the theoretical prediction with the measurements of the precision observables leads therefore to indirect constraints on the free parameters.
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The topic of this thesis is the calculation of electroweak precision observables including quantum corrections up to the two-loop order in extensions of the Standard Model by an additional scalar doublet. These Two-Higgs-Doublet Models contain in general many additional free parameters. The loop corrections to precision observables incorporate also non-standard contributions from the extended Higgs-sector, in addition to the already known contributions of the Standard Model. The comparison of t...
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