# Joint Annual Meeting of ÖPG and SPS 2021

August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

## 【314】Holographic QCD and the anomalous magnetic moment of the muon

Aug 31, 2021, 5:15 PM
15m
Room B

### Room B

Talk Nuclear, Particle- and Astrophysics (FAKT - TASK)

### Speaker

Josef Leutgeb (Vienna University of Technology)

### Description

The estimated error of the standard model prediction for the anomalous magnetic moment of the muon comes almost exclusively from hadronic vacuum polarization and hadronic light-by-light scattering, where the latter is dominated by exchanges of neutral pseudoscalars and axial vector mesons. Using holographic QCD we are able to calculate these contributions and to solve the problem of most phenomenological models to satisfy the known short-distance constraints of the hadronic light-by-light tensor, in particular the one implied by the axial anomaly pointed out by Melnikov and Vainshtein.

### Primary authors

Anton Rebhan (Vienna University of Technology) Josef Leutgeb (Vienna University of Technology)