Global analysis of the $U(3)^5$ symmetric SMEFT

TL;DR

This paper performs a comprehensive global analysis of the SMEFT with $U(3)^5$ symmetry, constraining 41 Wilson coefficients using diverse experimental data and considering both leading and next-to-leading order effects.

Contribution

It provides the first global constraints on all flavor-conserving dimension-six SMEFT operators under the $U(3)^5$ symmetry, incorporating NLO corrections and correlations across multiple experiments.

Findings

Constraints on all 41 Wilson coefficients derived.

Identification of correlations between different observables.

Assessment of NLO contributions on the global fit.

Abstract

The $U(3)^5$ symmetry within the SMEFT framework restricts the inclusion of only fully flavor-conserving operators at dimension six. This proceeding presents a global analysis of the SMEFT under this assumption. We provide global constraints on all 41 Wilson coefficients, utilizing leading-order and next-to-leading-order SMEFT predictions for various experiments including parity-violating experiments, Electroweak Precision Observables (EWPO), Higgs physics, top quark interactions, flavor observables, dijet production, and lepton scatterings. We address issues concerning the constraints of specific four-quark operators, investigate correlations between observables at different energy scales, and assess the impact of next-to-leading-order contributions on the global fit.