Global Fits of the electroweak Standard Model and beyond with Gfitter

Understand

In the global fit of the Standard Model using Gfitter, electroweak precision observables as well as constraints from direct Higgs searches have been compared with state-of-the-art electroweak predictions.

• We use the most recent results for direct Higgs searches at LEP and Tevatron and the latest measurements of m_t and M_W.
• Example results are an estimation of the mass of the Higgs boson (M_H=116.3 +15.6 -1.3 GeV) and a forth-order result for the strong coupling constant (alpha_S(M_Z^2)=0.1193 +-0.0028(exp) +-0.0001(theo)).
• A fit of the oblique parameters (STU) to the electroweak data is performed, in order to constrain physics beyond the Standard Model.