Higgs and Effective Field Theory HEFT 2023

Session

Wednesday AM1

21 Jun 2023, 09:00

Manchester

Conveners

Wednesday AM1

• Alejo Nahuel Rossia (University of Manchester)

15. One-loop IR/UV dictionary in the SMEFT

Guilherme Guedes (DESY)

21/06/2023, 09:00

Effective field theories offer a rationale for the classification of heavy new physics models based on the size of their contribution to the effective Lagrangian and therefore to experimental observables. When trying to connect theory with experiment, dictionaries which relate possible UV scenarios with the relevant effective interactions are of utmost importance.
In this talk, I will report...

24. Evanescent Operators in (SM)EFT Matching

Anders Eller Thomsen (Universität Basel)

21/06/2023, 09:30

The low-energy phenomenology of high-scale new physics is best captured with effective field theories (EFTs). Evanescent operators - operators that vanish in 4D - show up at intermediate steps in the matching calculations used to determine the specific EFT coefficients. Although seemingly unphysical, evanescent operators lead to finite physical effects, which must be accounted for. This...

25. Mapping the SMEFT one-loop structure of linear SM extensions

John Gargalionis (The University of Melbourne)

21/06/2023, 10:00

Linear Standard Model (SM) extensions, defined as new particles that can
couple linearly to SM fields, form a motivated subset of simplified models for
exploring phenomenology beyond the SM (BSM). Their linear couplings enable
them to be singly produced at colliders and searched for directly. To take full
advantage of the complementarity between direct searches at high energy and
indirect...