Speaker
Description
We present an updated global SMEFT analysis in the Higgs and Electroweak sectors using SFitter. A newly implemented marginalization treatment allows us to compare results for this global analysis obtained through profiling and marginalization of nuisance parameters and Wilson coefficients. Marginalization is motivated by a greater scalability to high-dimensional analyses and provides a faster numerical convergence, compared to the profiling method. The results differ mostly when volume effects affect the marginalization. Our extended Run 2 dataset includes new measurements, including several high-energy kinematic distributions. We investigate their impact on kinematically enhanced operators. Throughout, we emphasize the importance of a proper uncertainty treatment in global SMEFT analyses, particularly of flat theory uncertainties.
