Status of the light-by-light scattering and the $(g-2)_{\mu}$

Authors

  • Pere Masjuan Queralt

DOI:

https://doi.org/10.23727/CERN-Proceedings-2018-001.257

Keywords:

Anomalous magnetic moment of the muon, light-by-light scattering contributio

Abstract

In this talk we review the recent progress on the numerical determination of the Hadronic Light-by-Light contribution to the anomalous magnetic moment of the muon and we discuss the role of experimental data on the accuracy of its determination. Special emphasis on the main contribution, the pseudoscalar piece, is made. Gathering recent progress in the light-by-light scattering contribution we consider $a_{\mu}^{{\mathrm{HLBL}}} = (12.1\pm3.0)\times10^{-10}$ as a good summary of the state-of-the-art calculations which still claims for a $4\sigma$ deviation between theory and experiment for the $(g-2)_{\mu}$.

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Published

2018-12-20

Issue

Section

New physics searches with photons, connections to astrophysics, and other topics