Speaker
Prof.
Ulrich Nierste
Description
Any study of leptoquark (LQ) searches at colliders must include constraints on the parameter space from low-energy physics. I show that radiative corrections to the leptoquark-fermion couplings can be large and have a particularly simple pattern: If only one LQ species is present, the radiative corrections are universal and deplete all LQ-fermion couplings probed at high energies (in on-shell LQ decays) by the same factor w.r.t. their low-energy values probed in flavour observables. I present numerical examples for choices of parameters mitigating the flavour anomalies, including the fixed-point solutions of the renormalisation group evolution with lepton-flavour universality.
Authors
Dr
Innes Bigaran
(Fermilab and Northwestern University)
Rodolfo Capdevilla
(Fermi National Accelerator Laboratory)
Prof.
Ulrich Nierste
