Speaker
Description
I will review the Standard Model Effective Field Theories (SMEFT) from purely on-shell arguments. Starting from few basics assumptions such as Poincaré invariance and locality, it is possible to classify all the renormalizable and non-renormalizable interactions at the lowest order in the couplings. From these building blocks, locality and unitarity enforce Lie algebra structures to appear in the S-matrix elements together with relations among couplings (and hypercharges). Furthermore, on-shell techniques allowed us to compute any higher-point amplitude (or form factor) in generic EFTs. Finally, using known amplitudes techniques I will show the computation of the mixing matrix of SMEFT marginal interactions up to mass dimension 8, to linear order in the effective interactions.
| Do you wish to attend the workshop on-site? | yes |
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