Abstract
We investigate simplified models involving an inert scalar triplet and vector-like leptons that can account for the muon $g-2$ anomaly. These simplified scenarios are embedded in a model that features W' and Z' bosons, which are subject to stringent collider bounds. The constraints coming from the muon $g-2$ anomaly are put into perspective with collider bounds, as well as bounds coming from lepton flavor violation searches. The region of parameter space that explains the $g-2$ anomaly is shown to be within reach of lepton flavor violation probes and future colliders such as HL-LHC and HE-LHC.
Highlights
The Dirac equation predicts that the muon has a magnetic moment equal to m⃗ 1⁄4 ge=ð2mμÞS⃗, where g 1⁄4 2 is the gyromagnetic ratio
Quantum corrections to the g factor are parametrized by the muon anomalous magnetic moment (g − 2) defined as aμ Theoretical calculations of the Standard Model (SM) contributions to g − 2 represent a remarkable success of quantum field theory
We presented simplified scenarios that can accommodate the muon g − 2 anomaly, and discussed their embedding into 3-3-1 models
Summary
The Dirac equation predicts that the muon has a magnetic moment equal to m⃗ 1⁄4 ge=ð2mμÞS⃗ , where g 1⁄4 2 is the gyromagnetic ratio. We discuss simplified models for the g − 2 anomaly containing vectorlike leptons and an inert scalar triplet, and explore correlations with lepton flavor violation and constraints coming from collider physics. Our focus is twofold: first, to study the confluence of diverse experimental constraints on our simplified models and their capacity to explain the g − 2 anomaly; and second, to assess the possibility of addressing the anomaly within the broader architecture of the 3-3-1 models. We briefly describe these two aspects of our work.
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