Synergies of top and $B$ anomalies in SMEFT

TL;DR

This paper combines data from top-quark and beauty-physics experiments within the Standard Model effective field theory to tighten constraints on Wilson coefficients and explore potential deviations from the Standard Model.

Contribution

It provides a comprehensive combined analysis of current and future collider data to improve constraints on SMEFT Wilson coefficients, highlighting synergies between top and beauty physics.

Findings

Strong synergies between top and beauty physics constrain Wilson coefficients more tightly.

Future collider scenarios can enhance the detection of deviations from the Standard Model.

Current data hints at possible deviations in $b o s$ transitions.

Abstract

We present constraints on Wilson coefficients from a combined fit to data from top-quark and beauty-physics measurements within the Standard Model effective field theory. We consider present data on top-quark pair production and decay, $b\to s$ flavor changing neutral currents, and $Z\to b\bar b$ decay, as well as different future scenarios. These comprise projections for HL-LHC, Belle II, and a lepton collider using the example of CLIC. We investigate opportunities for detecting deviations from the Standard Model hinted at by present data on $b\to s$ transitions. In the fit, we find strong synergies between top-quark and beauty physics that allow to tighten constraints on various coefficients.