A global analysis of the SMEFT under the minimal MFV assumption

Abstract

We present comprehensive global fits of the SMEFT under the $\text{minimal}$ minimal flavour violation (MFV) hypothesis, i.e. assuming that only the flavour-symmetric and CP-invariant operators are relevant at the high scale. The considered operator set is determined by theory rather than the used datasets. We establish global limits on these Wilson coefficients using leading order and next-to-leading order SMEFT predictions for electroweak precision observables, Higgs, top, flavour and dijets data as well as measurements from parity violation experiments and lepton scattering. Our investigations reveal an intriguing crosstalk among different observables, underscoring the importance of combining diverse observables from various energy scales in global SMEFT analyses.

Comments: 21 pages, 12 figures, v2: references added, appendix on using ${\Delta }_{CKM}$ as an additional observable added