Analyticity and unitarity's offspring: anomalous dimensions and the space of EFTs
PIRSA ID:
20070026
Série :
Particle Physics
Event Type:
Seminar
Domaine(s) scientifique(s) :
Particle Physics
Date de fin :
Speaker(s):
- Marc Riembau, University of Geneva (UNIGE) - Department of Theoretical Physics
In the first part of the talk I will present how to compute anomalous dimensions of EFT operators using on-shell scattering amplitudes. The method is used to compute some two loop transitions, which are important to provide a complete characterisation of the dynamics affecting some low energy precision experiments. In the second part, I show how unitarity, analycity and locality impose stringent non-trivial constraints to the space of possible EFTs, invisible at the Lagrangian level by only considering the symmetries of the IR theory.