The contribution of fermionic seesaws to the anomalous magnetic moment of leptons

TL;DR

This paper calculates the impact of fermionic seesaw models on the muon anomalous magnetic moment, finding that these models cannot fully account for the observed experimental discrepancy.

Contribution

It provides a detailed calculation of fermionic seesaw contributions to lepton magnetic moments, showing their insufficiency in explaining the muon g-2 anomaly.

Findings

Fermionic seesaw contributions are too small to explain muon g-2 discrepancy.

Electroweak scale seesaw models do not resolve the muon magnetic moment anomaly.

The results constrain new physics models involving fermionic seesaws.

Abstract

We calculate the contribution to the anomalous magnetic moment of leptons in the type-I and type-III seesaw models. We show that, even if the scale of the new physics is pushed down to the electroweak scale, this contribution is not large enough to explain the measured discrepancy of the muon anomalous magnetic moment.