EFT, positivity, and the electroweak hierarchy

by Dr You Tevong (King's College London)

Wednesday 13 Sept 2023, 15:00 → 17:00 Europe/Rome

603 e online (Dip.to di Fisica Universitá di Genova)

The Standard Model (SM) is an Effective Field Theory (EFT) with an electroweak hierarchy problem associated to an unnaturally light Higgs. After introducing the concept of the SM EFT and the naturalness problem, I will present the possibility that an unnatural hierarchy between certain higher-dimensional operator coefficients in a low-energy EFT would automatically imply that the Higgs' vacuum expectation value is hierarchically smaller than the EFT cut-off, assuming the EFT emerged from a unitary, causal and local UV completion. Future colliders may have the sensitivity to infer such a pattern of coefficients for a little hierarchy with an EFT cut-off up to O(10) TeV.

 

Per connettersi a zoom:
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271

2023_09 - Genova - EFT, positivity, and the electroweak hierarchy.pdf

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