Explaining g − 2 anomalies in two Higgs doublet model with vector-like leptons

2020/09/30 by Eung Jin Chun, Tanmoy Mondal
Computer Science · Physics and Astronomy · #Anomalous magnetic dipole moment #Computational Physics and Python Applications #Condensed matter physics #Dark Matter and Cosmic Phenomena #Electron #Higgs boson #Lepton #Lepton number #Magnetic moment #Muon #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Scalar (mathematics) #Two-Higgs-doublet model #hep-ph

paper · pdf · doi:10.1007/jhep11(2020)077

published as J. High Energ. Phys. 2020, 77 (2020) · v1: 20 pages, 5 figures. v2: matches the version to appear in JHEP

openalex created_date 2020/09/21 · arxiv created 2020/10/09 · openalex publication_date 2020/11/01 · arxiv updated 2020/11/23 · openalex updated_date 2026/08/05

Abstract

A bstract We consider the two Higgs doublet model (2HDM) along with a generation of vector-like lepton doublet and singlet to explain the observed discrepancies in the electron and muon anomalous magnetic moments. The type-X (lepton-specific) 2HDM can allow a light pseudo-scalar which is known to explain the muon anomalous magnetic moment at two-loop. Such a light particle induces a sizable negative contribution to the electron anomalous magnetic moment at one-loop in the presence of vector-like leptons evading all the experimental constraints.

Citations

• Precision Electroweak Measurements on the Z Resonance
• Final report of the E821 muon anomalous magnetic moment measurement at BNL
• Theory and phenomenology of two-Higgs-doublet models
• Measurement of the fine-structure constant as a test of the Standard Model
• Electroweak baryogenesis
• The anomalous magnetic moment of the muon in the Standard Model