Speaker
Description
Under the assumption that new physics lies beyond the current energy reach of the LHC, deviations from Standard Model predictions are expected to appear in the tails of kinematic distributions. In particular, neutral- and charged-current Drell-Yan (DY) processes are useful to study such effects, given the large amount of data collected during Run 1 and Run 2 of the LHC. However, a fully model-independent analysis using the Standard Model Effective Field Theory (SMEFT) is impractical due to the large number of parameters. This challenge can be addressed by assuming universal new physics, which reduces the number of independent Wilson coefficients at dimension-six and dimension-eight compared to the general case. In this talk, I will present an analysis of DY and Electroweak Precision Observables (EWPO) data within the Universal SMEFT framework, incorporating both dimension-six and dimension-eight effects. Additionally, I will discuss the interpretation of the results in terms of the generalized oblique parameters, as well as the complementarity between DY data and EWPO.
