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2020.PhysRevD.102.071901.pdf (1.06 MB)

Anomalous magnetic moments from asymptotic safety

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posted on 2023-06-10, 02:46 authored by Gudrun Hiller, Clara Hormigos-Feliu, Daniel LitimDaniel Litim, Tom Steudtner
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.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

2470-0010

Publisher

American Physical Society

Issue

7

Volume

102

Page range

1-6

Article number

a071901

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2022-03-01

First Open Access (FOA) Date

2022-03-01

First Compliant Deposit (FCD) Date

2022-02-28

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