Vectorlike leptons: Muon g2 anomaly, lepton flavor violation, Higgs boson decays, and lepton nonuniversality

Zijie Poh and Stuart Raby
Phys. Rev. D 96, 015032 – Published 26 July 2017

Abstract

In this paper, we consider the Standard Model (SM) with one family of vectorlike (VL) leptons, which couple to all three families of the SM leptons. We study the constraints on this model coming from the heavy-charged lepton mass bound, electroweak precision data, the muon anomalous magnetic moment, lepton flavor violation, Higgs boson decay constraints, and a recently measured lepton nonuniversality observable, RK*0, along with RK. We find that the strongest constraints are coming from the muon g2, Rμμ=Γ(hμμ)/Γ(hμμ)SM, Rγγ and BR(μeγ). Although VL leptons couple to all three families of the SM leptons, the ratio of electron-VL to muon-VL coupling is constrained to be λe/λμ104. We also find that this model cannot fit the lepton nonuniversality discrepancies.

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  • Received 22 May 2017

DOI:https://doi.org/10.1103/PhysRevD.96.015032

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Zijie Poh* and Stuart Raby

  • Department of Physics, The Ohio State University, 191 W. Woodruff Avenue, Columbus Ohio 43210, USA

  • *poh.7@osu.edu
  • raby.1@osu.edu

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Vol. 96, Iss. 1 — 1 July 2017

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