Anomalous magnetic moments from asymptotic safety

Hiller, Gudrun, Hormigos-Feliu, Clara, Litim, Daniel F and Steudtner, Tom (2020) Anomalous magnetic moments from asymptotic safety. Physical Review D, 102 (7). a071901 1-6. ISSN 2470-0010

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The measurements of the muon and electron anomalous magnetic moments hint at physics beyond the standard model. We show why and how models inspired by asymptotic safety can explain deviations from standard model predictions naturally. Our setup features an enlarged scalar sector and Yukawa couplings between leptons and new vectorlike fermions. Using the complete two-loop running of couplings, we observe a well-behaved high-energy limit of models including a stabilization of the Higgs. We find that a manifest breaking of lepton universality beyond standard model Yukawas is not necessary to explain the muon and electron anomalies. We further predict the tau anomalous magnetic moment and new particles in the TeV energy range, whose signatures at colliders are indicated. With small CP phases, the electron EDM can be as large as the present bound.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 01 Mar 2022 08:29
Last Modified: 01 Mar 2022 08:30

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