TPPC weekly seminar (in-person): Dave Sutherland - "Building blocks of the flavourful SMEFT"

Wednesday 2 Nov 2022, 12:30 → 14:00 Europe/London

Strand Building, S7.06

Speaker: Dave Sutherland, University of Glasgow

Title: Building blocks of the flavourful SMEFT

Abstract: The Standard Model Effective Field Theory (SMEFT) encodes the observable short range effects of heavy new physics as the coefficients of higher dimensional operators built from Standard Model fields. It spans a large parameter space of effects, nearly all of them flavourful, i.e. mediating interactions between different generations of the Standard Model fermion fields.
I will describe recent work (arXiv:2210.09316) that focusses on the current-current operators in the dimension 6 SMEFT. It uses flavour symmetries and on-shell insights to identify many small subspaces that, to a good approximation, do not mix under the running in the SMEFT. I will describe preliminary work that uses these insights to effectively solve the RG of the SMEFT, i.e., that identifies the directions in the parameter space of new physics that are universally enhanced in the IR.

 

flavourRGTalk.pdf