Composite Higgs Models, Technicolor and The Muon Anomalous Magnetic Moment

TL;DR

This paper analyzes how composite Higgs and Technicolor models could explain the muon g-2 anomaly by deriving analytical formulas for contributions from various new particles and setting bounds on their properties.

Contribution

It provides general analytical expressions for muon g-2 contributions from new particles in composite models and applies these to a specific Technicolor scenario.

Findings

Certain particle contents can account for the g-2 excess.

Stringent mass bounds are derived for new particles if the anomaly is not explained.

Electroweak and collider constraints are discussed.

Abstract

We revisit the muon magnetic moment (g-2) in the context of Composite Higgs models and Technicolor, and provide general analytical expressions for computing the muon magnetic moment stemming from new fields such as, neutral gauge bosons, charged gauge bosons, neutral scalar, charged scalars, and exotic charged leptons type of particles. Under general assumptions we assess which particle content could address the $g-2_{\mu}$ excess. Moreover, we take a conservative approach and derive stringent limits on the particle masses in case the anomaly is otherwise resolved and comment on electroweak and collider bounds. Lastly, for concreteness we apply our results to a particular Technicolor model.