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High Energy Physics - Phenomenology

arXiv:2511.02642 (hep-ph)
[Submitted on 4 Nov 2025]

Title:The Price of a Large Electron Yukawa Modification

Authors:Lukas Allwicher, Matthew McCullough, Sophie Renner, Duncan Rocha, Benjamin Smith
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Abstract: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.
Comments: 33 pages, 9 figures
Subjects: High Energy Physics - Phenomenology (hep-ph)
Report number: CERN-TH-2025-201, DESY-25-142
Cite as: arXiv:2511.02642 [hep-ph]
  (or arXiv:2511.02642v1 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.2511.02642

Submission history

From: Matthew McCullough [view email]
[v1] Tue, 4 Nov 2025 15:09:59 UTC (5,124 KB)
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