muon g-2 anomaly and μ-τ-philic Higgs doublet with a light CP-even component

2021/04/14 by Hong-Xin Wang, Lei Wang, Yang Zhang · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-021-09778-2

12 pages, 4 figures. arXiv admin note: text overlap with arXiv:2104.03227. text overlap with arXiv:1908.03755

arxiv created 2021/04/14 · arxiv updated 2021/12/01

Abstract

We examine the possibilities of accommodating the muon g-2 anomaly reported by Fermilab in the 2HDM with a discrete Z₄ symmetry in which an inert Higgs doublet field (H,~A,~H^±) has the lepton flavor violation μ-τ interactions. We study the case of light H (5 GeV <m_H< 115 GeV) and assume the Yukawa matrices to be real and symmetrical. Considering relevant theoretical and experimental constraints, especially for the multi-lepton searches at the LHC, we find the muon g-2 anomaly can be explained within 2σ range in the region of 5 GeV <m_H<20 GeV, 130 GeV < m_A~(m_H^±)< 610 GeV, and 0.005 <ρ< 0.014. Meanwhile, the χ²_τ fitting the data of lepton flavour universality in the τ decays approaches to the SM prediction.

Citations

• A μ-τ-philic Higgs doublet confronted with the muon g-2, τ decays and LHC data
• Lepton-specific inert two-Higgs-doublet model confronted with the new results for muon and electron g-2 anomalies and multi-lepton searches at the LHC

Cited by

• Lepton-specific inert two-Higgs-doublet model confronted with the new results for muon and electron g-2 anomalies and multi-lepton searches at the LHC