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

【313】QCD Constraints on the Hadronic Light-by-Light Contribution to the Muon g − 2

Aug 31, 2021, 5:00 PM
Room B

Room B

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


Jan Lüdtke (University of Vienna)


The new results by the Fermilab g-2 Collaboration have consolidated the long-standing discrepancy between the Standard Model (SM) prediction and the experimental measurement of the muon anomalous magnetic moment, which is traditionally considered a harbinger for New Physics. I will discuss one specific part of the SM evaluation, namely the hadronic light-by-light contribution (HLbL), which is responsible for a sizeable part of the theory uncertainty. I will present a model-independent method which incorporates all available constraints at low and high energies to obtain a more precise estimate. Our numerical analysis allows us to identify what additional information is needed to further improve the SM prediction of the HLbL.

Primary authors

Jan Lüdtke (University of Vienna) Massimiliano Procura (University of Vienna (AT))

Presentation materials