From Higgs physics to lepton flavour violation: current bounds and future prospects for vector-like lepton models

Fuente: arXiv
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Autores principales: Daberstiel, Gregor, Möhling, Kilian, Stöckinger, Dominik, Stöckinger-Kim, Hyejung
Formato: Preprint
Publicado: 2026
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author Daberstiel, Gregor
Möhling, Kilian
Stöckinger, Dominik
Stöckinger-Kim, Hyejung
author_facet Daberstiel, Gregor
Möhling, Kilian
Stöckinger, Dominik
Stöckinger-Kim, Hyejung
contents We present a comprehensive phenomenological study of a class of six vector-like lepton models with seesaw-like mass contributions and strong modifications to Higgs and lepton phenomenology. We focus on lepton flavour conserving and violating observables across all lepton generations and collider observables like $Z$ and Higgs decays. In light of the recent progress at the LHC and precision measurements such as muon $g-2$, as well as in anticipation of upcoming experiments like MEGII, Mu2e/COMET, Mu3e, Belle II and at the HL-LHC, we systematically survey the viable parameter space and identify patterns and correlations. The considered class of models gives rise to a rich and testable phenomenology with robust and complementary probes that allow to distinguish between models in the coming experimental era.
format Preprint
id arxiv_https___arxiv_org_abs_2603_21414
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle From Higgs physics to lepton flavour violation: current bounds and future prospects for vector-like lepton models
Daberstiel, Gregor
Möhling, Kilian
Stöckinger, Dominik
Stöckinger-Kim, Hyejung
High Energy Physics - Phenomenology
We present a comprehensive phenomenological study of a class of six vector-like lepton models with seesaw-like mass contributions and strong modifications to Higgs and lepton phenomenology. We focus on lepton flavour conserving and violating observables across all lepton generations and collider observables like $Z$ and Higgs decays. In light of the recent progress at the LHC and precision measurements such as muon $g-2$, as well as in anticipation of upcoming experiments like MEGII, Mu2e/COMET, Mu3e, Belle II and at the HL-LHC, we systematically survey the viable parameter space and identify patterns and correlations. The considered class of models gives rise to a rich and testable phenomenology with robust and complementary probes that allow to distinguish between models in the coming experimental era.
title From Higgs physics to lepton flavour violation: current bounds and future prospects for vector-like lepton models
topic High Energy Physics - Phenomenology
url https://arxiv.org/abs/2603.21414