Hadronic contributions to the muon $g-2$ in holographic QCD

TL;DR

This paper reviews how holographic QCD models can effectively calculate hadronic contributions to the muon g-2, especially the light-by-light scattering, by satisfying key theoretical constraints through axial vector meson contributions.

Contribution

It demonstrates that bottom-up holographic QCD models can naturally incorporate axial vector mesons to accurately compute hadronic light-by-light scattering contributions to muon g-2.

Findings

Holographic QCD models satisfy Melnikov-Vainshtein constraint.

Axial vector mesons play a crucial role in calculations.

Improved theoretical understanding of muon g-2 contributions.

Abstract

We discuss the recent progress made in using bottom-up holographic QCD models in calculating hadronic contributions to the anomalous magnetic moment of the muon, in particular the hadronic light-by-light scattering contribution, where holographic QCD naturally satisfies the Melnikov-Vainshtein constraint by an infinite series of axial vector meson contributions.