For an RPV supersymmetric sbottom diquark model, SMEFT 4-quark operators describe LHC top-pair data only for squark masses so large that the effects are unobservable, so SMEFT bounds cannot constrain this model.
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We discuss a global fit of top quark BSM couplings, phrased in the model-independent language of higher-dimensional effective operators, to the currently available data from the LHC and Tevatron. We examine the interplay between inclusive and differential measurements, and the complementarity of LHC and Tevatron results. We conclude with a discussion of projections for improvement over LHC Run II.
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Can Effective $4-$Quark Operators Describe Signals of a Supersymmetric Diquark Model at the LHC?
For an RPV supersymmetric sbottom diquark model, SMEFT 4-quark operators describe LHC top-pair data only for squark masses so large that the effects are unobservable, so SMEFT bounds cannot constrain this model.