Leptonic $g-2$ in 2HDM

TL;DR

This paper proposes a flavor-conserving Two Higgs Doublet Model that simultaneously explains the electron and muon g-2 anomalies and an ATLAS excess, aligning experimental observations with theoretical predictions.

Contribution

It introduces a stable, renormalization-group invariant 2HDM capable of addressing multiple experimental anomalies simultaneously.

Findings

The model successfully explains both electron and muon g-2 discrepancies.

It accounts for the ATLAS excess in tau pair production.

The model remains consistent under renormalization group evolution.

Abstract

The experimental observations of the electron and muon anomalous magnetic moment present discrepancies with respect to the Standard Model predictions. A class of flavor conserving Two Higgs Doublet model, stable under renormalization, that is capable of explaining both anomalies simultaneously is presented. This model can also explain an excess observed by ATLAS in $\sigma(pp\to S)_{[\text{ggF}]}\times \text{Br}(S\to\tau^+\tau^-)$.