1. To profile or to marginalize : A SMEFT case study
- Author
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Brivio, Ilaria, Bruggisser, Sebastian, Elmer, Nina, Geoffray, Emma, Luchmann, Michel, Plehn, Tilman, Brivio, Ilaria, Bruggisser, Sebastian, Elmer, Nina, Geoffray, Emma, Luchmann, Michel, and Plehn, Tilman
- Abstract
Global SMEFT analyses have become a key interpretation framework for LHC physics, quantifying how well a large set of kinematic measurements agrees with the Standard Model. This agreement is encoded in measured Wilson coefficients and their uncertainties. A technical challenge of global analyses are correlations. We compare, for the first time, results from a profile likelihood and a Bayesian marginalization for a given data set with a comprehensive uncertainty treatment. Using the validated Bayesian framework we analyse a series of new kinematic measurements. For the updated dataset we find and explain differences between the marginalization and profile likelihood treatments.
- Published
- 2024
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