SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 2: Flavor I

T 2.6: Vortrag

Montag, 20. März 2023, 17:45–18:00, HSZ/0004

Minimal Models for Radiative Fermion Masses — •Zachary Wüthrich^1,2 and Andreas Crivellin^3,4 — ¹Universität Siegen — ²ETH, Zürich — ³PSI — ⁴UZH

There has been a long history of attempts to generate fermion masses from loops of heavier particles. This would be an elegant theory, as it provides a simple and natural explanation of the observed fermion mass hierarchy through the loop hierarchy.

This work investigates a class of minimal renormalizable models using scalar leptoquarks and other new scalar particles to generate the fermion masses at the loop level. We provide for the first time a classification of the different representations of a scalar field that allows for a chirally enhanced radiative generation of fermion masses. Constraints from observables give bounds on the scalar particle masses and their couplings, with special emphasis given to the effect of the new models on the anomalous magnetic moment of the muon.