Hadronic light-by-light scattering in the anomalous magnetic moment of the muon

Nils Asmussen, Antoine Gerardin, Andreas Nyffeler, Harvey B. Meyer

SciPost Phys. Proc. 1, 031 (2019) · published 20 February 2019

Proceedings event

The 15th International Workshop on Tau Lepton Physics

Abstract

Hadronic light-by-light scattering in the anomalous magnetic moment of the muon $a_\mu$ is one of two hadronic effects limiting the precision of the Standard Model prediction for this precision observable, and hence the new-physics discovery potential of direct experimental determinations of $a_\mu$. In this contribution, I report on recent progress in the calculation of this effect achieved both via dispersive and lattice QCD methods.


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