# Higgs and Effective Field Theory - HEFT 2019

15-18 April 2019
Europe/Brussels timezone

## SMEFT, the frog" point of view

Apr 16, 2019, 4:20 PM
30m

### Speaker

Prof. Giampiero Passarino (INFN Turin & Turin U.)

### Description

There is increasing need to assess the impact and the interpretation of dim = 6 and dim = 8 operators within
the context of the Standard Model Effective Field Theory (SMEFT). The observational and mathematical consistency of a
construct based on dim = 6 and dim = 8 operators is critically examined in the light of known theoretical
results. The discussion includes elimination of redundant operators and their higher order compensation,
SMEFT in comparison with ultraviolet completions incorporating a proliferation of scalar and mixings,
canonical normalization of effective field theories, gauge invariance and gauge fixing,
role of tadpoles when constructing SMEFT at NLO, heavy-light contributions to the low energy limit of theories
containing bosons and fermions and one-loop matching.