Description
Chair: Tommy Smith
Effective field theories (EFTs) have become an essential tool in the search of new physics beyond the Standard Model. The calculation of the Wilson coefficients of the EFT for specific new physics models is usually performed by matching off-shell one-light-particle irreducible Green functions, which requires an off-shell basis of effective operators. This so-called Green's basis includes some...
Observations of lepton flavour universality violating effects may hint at new physics, prompting analysis of the phenomenology for models with new heavy mediators of these effects, such as a $Z’$. A new physics field coupling to di-muon pairs may explain the anomalous B-meson decay measurements, including measurements of $b\rightarrow s\mu ^+ \mu ^-$ with the 2022 LHCb reanalysis of lepton...
The Froggatt-Nielsen (FN) mechanism is one of the oldest and simplest attempts at explaining the striking hierarchies observed in the fermion masses and mixings. Given that FN models give rise to the correct fermion masses and mixings by construction and that the new particles predicted by the models are typically assumed to be heavy, it is not clear if the models are experimentally...
