Work

The price of a large electron Yukawa modification

Year: 2026

Type: article

Abstract: A bstract The theoretical implications of an electron Yukawa modification are considered in the context of a possible Higgs pole run at FCC-ee, aimed at bounding this coupling. We start from an effective field theory viewpoint, considering the impact of renormalisation group effects on related observables and also examining assumptions on the broader UV flavour structure. We then give an overview of the landscape of simplified models, investigating phenomenological constraints arising at higher orders. A short discussion of fine-tuning is also included.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep03(2026)201

Authors: Lukas Allwicher, Matthew McCullough, Sophie Renner, Duncan Rocha, Benjamin Smith

Institutions: Deutsches Elektronen-Synchrotron DESY, European Organization for Nuclear Research, University of Glasgow, Fermi National Accelerator Laboratory, University of Chicago

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond