Muon anomaly from vector-like leptons in a 2-Higgs-doublet + scalar singlet model

Tim Brune; Thomas W. Kephart; Heinrich Päs

doi:10.1140/epjc/s10052-024-13617-5

EPJ

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2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2024) 84: 1254
https://doi.org/10.1140/epjc/s10052-024-13617-5

Regular Article

Muon $g - 2$ anomaly from vector-like leptons in a 2-Higgs-doublet + scalar singlet model

Tim Brune¹^a, Thomas W. Kephart² and Heinrich Päs¹

¹ Fakultät für Physik, Technische Universität Dortmund, 44221, Dortmund, Germany
² Department of Physics and Astronomy, Vanderbilt University, 37235, Nashville, TN, USA

^a tim.brune@tu-dortmund.de

Received: 19 May 2024
Accepted: 17 November 2024
Published online: 3 December 2024

Abstract

We revisit an economical model for the $g - 2$ $$g-2$$ anomaly featuring a vector-like charged fermion, a scalar doublet and a scalar singlet in the light of new results from Fermilab. The phenomenological implications for lepton-flavor universality, Higgs decays, and charged lepton-flavor violating decays are discussed in detail.

© The Author(s) 2024

corrected publication 2024

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