  The LHC effective field theory working group gathers members of the LHC
experiments and the theory community to provide a framework for the
interpretation of LHC data in the context of EFT. In this note we discuss
experimental observables and corresponding measurements in analysis of the
Higgs, top, and electroweak data at the LHC. We review the relationship between
operators and measurements relevant for the interpretation of experimental data
in the context of a global SMEFT analysis. One of the goals of ongoing effort
is bridging the gap between theory and experimental communities working on EFT,
and in particular concerning optimised analyses. This note serves as a guide to
experimental measurements and observables leading to EFT fits and establishes
good practice, but does not present authoritative guidelines how those
measurements should be performed.
