Update of the electroweak precision fit, interplay with Higgs-boson signal strengths and model-independent constraints on new physics

Abstract

We present updated global fits of the Standard Model and beyond to electroweak precision data, taking into account recent progress in theoretical calculations and experimental measurements. From the fits, we derive model-independent constraints on new physics by introducing oblique and epsilon parameters, and modified $Zb\bar{b}$ and $HVV$ couplings. Furthermore, we also perform fits of the scale factors of the Higgs-boson couplings to observed signal strengths of the Higgs boson.

arXiv comment7 pages, 9 figures. Proceedings of the 37th International Conference on High Energy Physics (ICHEP2014), Valencia, Spain, 2-9 July 2014. v2: a reference added

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