Is it possible to explain the muon and electron g − 2 in a Z ′ model?

In order to address this question, we consider a simple renormalizable and gauge invariant model in which the Z′ only has couplings to the electron and muon and their associated neutrinos, arising from mixing with a heavy vectorlike fourth family of leptons. Within this model we discuss the contribu...

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Vydáno v:Physical review. D Ročník 101; číslo 11; s. 1
Hlavní autoři: Hernández, A. E. Cárcamo, King, S. F., Lee, H., Rowley, S. J.
Médium: Journal Article
Jazyk:angličtina
Vydáno: College Park American Physical Society 01.06.2020
Témata:
Anomalies
Couplings
Electrons
Leptons
Magnetic moments
Muons
Neutrinos
ISSN:2470-0010, 2470-0029
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Popis
Shrnutí:In order to address this question, we consider a simple renormalizable and gauge invariant model in which the Z′ only has couplings to the electron and muon and their associated neutrinos, arising from mixing with a heavy vectorlike fourth family of leptons. Within this model we discuss the contributions to the electron and muon anomalous magnetic moments from Z′ exchange, subject to the constraints from μ → e γ and neutrino trident production. Using analytic and numerical arguments, we find that such a Z′ model can account for either the electron or the muon g − 2 anomalies, but not both, while remaining consistent with the experimental constraints from μ → eγ and neutrino trident production.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.101.115016