Testing the 2HDM explanation of the muon g – 2 anomaly at the LHC

• Published in: The journal of high energy physics Vol. 2019; no. 11; pp. 1 - 19
• Main Authors: Iguro, Syuhei, Omura, Yuji, Takeuchi, Michihisa
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-11-2019; Springer Nature B.V; SpringerOpen
• Subjects: Beyond Standard Model; Bosons; Classical and Quantum Gravitation; Couplings; Electroweak interactions (field theory); Elementary Particles; Flavor (particle physics); Higgs bosons; Higgs Physics; High energy physics; Leptons; Magnetic moments; Model testing; Muons; Particle physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Quarks; Regular Article - Theoretical Physics; Relativity Theory; Scalars; Standard model (particle physics); String Theory; Symmetry; Beyond Standard Model; Higgs Physics
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP11(2019)130

A
bstract
The discrepancy between the measured value and the Standard Model pre- diction for the muon anomalous magnetic moment is one of the important issues in the particle physics. In this paper, we consider a two Higgs doublet model (2HDM) where the extra Higgs doublet couples to muon and tau in lepton flavor violating (LFV) way and the one-loop correction involving the scalars largely contributes to the muon anomalous magnetic moment. The couplings should be sizable to explain the discrepancy, so that the extra Higgs bosons would dominantly decay into
μτ
LFV modes, which makes the model testable at the LHC through multi-lepton signatures even though they are produced via the electroweak interaction. We discuss the current status and the future prospect for the extra Higgs searches at the LHC, and demonstrate the reconstruction of the mass spectrum using the multi-lepton events.